/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-crafted/xor4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 18:37:58,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 18:37:58,512 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 18:37:58,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 18:37:58,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 18:37:58,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 18:37:58,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 18:37:58,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 18:37:58,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 18:37:58,544 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 18:37:58,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 18:37:58,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 18:37:58,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 18:37:58,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 18:37:58,545 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 18:37:58,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 18:37:58,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 18:37:58,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 18:37:58,546 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 18:37:58,546 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 18:37:58,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 18:37:58,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 18:37:58,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 18:37:58,550 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 18:37:58,556 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 18:37:58,556 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 18:37:58,556 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 18:37:58,556 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 18:37:58,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 18:37:58,557 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 18:37:58,557 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 18:37:58,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 18:37:58,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 18:37:58,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 18:37:58,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:37:58,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 18:37:58,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 18:37:58,558 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 18:37:58,558 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 18:37:58,558 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 18:37:58,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 18:37:58,559 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 18:37:58,559 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 18:37:58,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 18:37:58,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 18:37:58,559 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 18:37:58,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 18:37:58,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 18:37:58,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 18:37:58,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 18:37:58,752 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 18:37:58,757 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 18:37:58,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor4.i [2023-12-21 18:37:59,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 18:37:59,917 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 18:37:59,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor4.i [2023-12-21 18:37:59,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22227f355/e67ee22515b44897b603d1fa35d229a4/FLAGe60acff6d [2023-12-21 18:37:59,932 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22227f355/e67ee22515b44897b603d1fa35d229a4 [2023-12-21 18:37:59,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 18:37:59,935 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 18:37:59,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 18:37:59,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 18:37:59,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 18:37:59,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:37:59" (1/1) ... [2023-12-21 18:37:59,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21539c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:37:59, skipping insertion in model container [2023-12-21 18:37:59,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:37:59" (1/1) ... [2023-12-21 18:37:59,954 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 18:38:00,086 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-crafted/xor4.i[1303,1316] [2023-12-21 18:38:00,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:38:00,095 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 18:38:00,114 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-crafted/xor4.i[1303,1316] [2023-12-21 18:38:00,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:38:00,124 INFO L206 MainTranslator]: Completed translation [2023-12-21 18:38:00,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00 WrapperNode [2023-12-21 18:38:00,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 18:38:00,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 18:38:00,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 18:38:00,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 18:38:00,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,148 INFO L138 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 72 [2023-12-21 18:38:00,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 18:38:00,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 18:38:00,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 18:38:00,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 18:38:00,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,179 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 7, 11]. 55 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0]. The 5 writes are split as follows [0, 0, 5]. [2023-12-21 18:38:00,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 18:38:00,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 18:38:00,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 18:38:00,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 18:38:00,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (1/1) ... [2023-12-21 18:38:00,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:38:00,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 18:38:00,217 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 18:38:00,224 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 18:38:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 18:38:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 18:38:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 18:38:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 18:38:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 18:38:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 18:38:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 18:38:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 18:38:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 18:38:00,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 18:38:00,238 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2023-12-21 18:38:00,238 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2023-12-21 18:38:00,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 18:38:00,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 18:38:00,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 18:38:00,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 18:38:00,291 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 18:38:00,292 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 18:38:00,472 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 18:38:00,500 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 18:38:00,500 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 18:38:00,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:38:00 BoogieIcfgContainer [2023-12-21 18:38:00,501 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 18:38:00,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 18:38:00,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 18:38:00,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 18:38:00,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:37:59" (1/3) ... [2023-12-21 18:38:00,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c56ecb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:38:00, skipping insertion in model container [2023-12-21 18:38:00,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:38:00" (2/3) ... [2023-12-21 18:38:00,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c56ecb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:38:00, skipping insertion in model container [2023-12-21 18:38:00,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:38:00" (3/3) ... [2023-12-21 18:38:00,507 INFO L112 eAbstractionObserver]: Analyzing ICFG xor4.i [2023-12-21 18:38:00,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 18:38:00,519 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 18:38:00,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 18:38:00,552 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;@55cfcdc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 18:38:00,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 18:38:00,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:38:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 18:38:00,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:38:00,560 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:38:00,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:38:00,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:38:00,564 INFO L85 PathProgramCache]: Analyzing trace with hash -287281446, now seen corresponding path program 1 times [2023-12-21 18:38:00,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:38:00,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023847185] [2023-12-21 18:38:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:38:00,577 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 18:38:00,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:38:00,586 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 18:38:00,590 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 18:38:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:38:00,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 18:38:00,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:38:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:38:00,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:38:00,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:38:00,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023847185] [2023-12-21 18:38:00,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023847185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:38:00,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:38:00,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 18:38:00,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024044096] [2023-12-21 18:38:00,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:38:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 18:38:00,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:38:00,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 18:38:00,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:38:00,768 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 18:38:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:38:00,802 INFO L93 Difference]: Finished difference Result 38 states and 55 transitions. [2023-12-21 18:38:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 18:38:00,804 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-12-21 18:38:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:38:00,809 INFO L225 Difference]: With dead ends: 38 [2023-12-21 18:38:00,809 INFO L226 Difference]: Without dead ends: 18 [2023-12-21 18:38:00,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 18:38:00,816 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:38:00,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:38:00,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-21 18:38:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-21 18:38:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:38:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-21 18:38:00,846 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 25 [2023-12-21 18:38:00,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:38:00,849 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-21 18:38:00,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 18:38:00,850 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-21 18:38:00,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 18:38:00,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:38:00,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:38:00,857 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 18:38:01,054 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 18:38:01,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:38:01,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:38:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash 891799584, now seen corresponding path program 1 times [2023-12-21 18:38:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:38:01,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642171762] [2023-12-21 18:38:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:38:01,058 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 18:38:01,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:38:01,060 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 18:38:01,061 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 18:38:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:38:01,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 18:38:01,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:38:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 18:38:01,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:38:01,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:38:01,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642171762] [2023-12-21 18:38:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642171762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:38:01,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:38:01,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 18:38:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973778818] [2023-12-21 18:38:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:38:01,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 18:38:01,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:38:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 18:38:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:38:01,139 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:38:01,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:38:01,157 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2023-12-21 18:38:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 18:38:01,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-12-21 18:38:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:38:01,158 INFO L225 Difference]: With dead ends: 35 [2023-12-21 18:38:01,158 INFO L226 Difference]: Without dead ends: 19 [2023-12-21 18:38:01,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 18:38:01,159 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:38:01,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:38:01,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-21 18:38:01,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-21 18:38:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:38:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-21 18:38:01,163 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 25 [2023-12-21 18:38:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:38:01,163 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-21 18:38:01,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:38:01,164 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-21 18:38:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 18:38:01,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:38:01,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:38:01,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-21 18:38:01,366 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 18:38:01,366 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:38:01,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:38:01,367 INFO L85 PathProgramCache]: Analyzing trace with hash -67578981, now seen corresponding path program 1 times [2023-12-21 18:38:01,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:38:01,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397366520] [2023-12-21 18:38:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:38:01,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:38:01,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:38:01,369 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 18:38:01,371 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 18:38:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:38:01,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:38:01,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:38:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 18:38:01,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:38:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 18:38:01,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:38:01,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397366520] [2023-12-21 18:38:01,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397366520] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:38:01,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:38:01,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2023-12-21 18:38:01,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70291950] [2023-12-21 18:38:01,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:38:01,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 18:38:01,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:38:01,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 18:38:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:38:01,545 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:38:01,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:38:01,598 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2023-12-21 18:38:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 18:38:01,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2023-12-21 18:38:01,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:38:01,599 INFO L225 Difference]: With dead ends: 38 [2023-12-21 18:38:01,599 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 18:38:01,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 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 18:38:01,603 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:38:01,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:38:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 18:38:01,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-21 18:38:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:38:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-12-21 18:38:01,614 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 26 [2023-12-21 18:38:01,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:38:01,614 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-12-21 18:38:01,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:38:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-12-21 18:38:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 18:38:01,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:38:01,615 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:38:01,619 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 18:38:01,817 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 18:38:01,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:38:01,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:38:01,818 INFO L85 PathProgramCache]: Analyzing trace with hash -422818080, now seen corresponding path program 2 times [2023-12-21 18:38:01,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:38:01,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395667766] [2023-12-21 18:38:01,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:38:01,819 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 18:38:01,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:38:01,819 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 18:38:01,822 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 18:38:01,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 18:38:01,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:38:01,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 18:38:01,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:38:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 18:38:01,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:38:01,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:38:01,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395667766] [2023-12-21 18:38:01,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395667766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:38:01,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:38:01,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 18:38:01,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598679610] [2023-12-21 18:38:01,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:38:01,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 18:38:01,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:38:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 18:38:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:38:01,896 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:38:01,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:38:01,921 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2023-12-21 18:38:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 18:38:01,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2023-12-21 18:38:01,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:38:01,923 INFO L225 Difference]: With dead ends: 37 [2023-12-21 18:38:01,923 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 18:38:01,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 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 18:38:01,927 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:38:01,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:38:01,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 18:38:01,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 18:38:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:38:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-21 18:38:01,933 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2023-12-21 18:38:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:38:01,934 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-21 18:38:01,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:38:01,934 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-21 18:38:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 18:38:01,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:38:01,936 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:38:01,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 18:38:02,144 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 18:38:02,144 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:38:02,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:38:02,145 INFO L85 PathProgramCache]: Analyzing trace with hash -425396549, now seen corresponding path program 1 times [2023-12-21 18:38:02,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:38:02,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482662375] [2023-12-21 18:38:02,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:38:02,145 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 18:38:02,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:38:02,146 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 18:38:02,148 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 18:38:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:38:02,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 18:38:02,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:38:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:38:02,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:38:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:38:02,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:38:02,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482662375] [2023-12-21 18:38:02,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482662375] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:38:02,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:38:02,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-21 18:38:02,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102063487] [2023-12-21 18:38:02,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:38:02,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 18:38:02,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:38:02,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 18:38:02,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 18:38:02,336 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:38:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:38:02,493 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2023-12-21 18:38:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:38:02,494 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 32 [2023-12-21 18:38:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:38:02,494 INFO L225 Difference]: With dead ends: 46 [2023-12-21 18:38:02,494 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 18:38:02,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:38:02,495 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:38:02,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:38:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 18:38:02,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 18:38:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:38:02,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-12-21 18:38:02,500 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 32 [2023-12-21 18:38:02,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:38:02,500 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-12-21 18:38:02,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:38:02,500 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-12-21 18:38:02,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 18:38:02,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:38:02,501 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:38:02,516 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 18:38:02,703 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 18:38:02,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:38:02,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:38:02,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1150251877, now seen corresponding path program 2 times [2023-12-21 18:38:02,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:38:02,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915362582] [2023-12-21 18:38:02,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:38:02,705 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 18:38:02,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:38:02,706 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 18:38:02,707 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 18:38:02,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:38:02,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:38:02,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 18:38:02,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:38:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:38:02,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:38:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:38:03,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:38:03,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915362582] [2023-12-21 18:38:03,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915362582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:38:03,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:38:03,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-21 18:38:03,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326586915] [2023-12-21 18:38:03,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:38:03,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 18:38:03,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:38:03,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 18:38:03,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 18:38:03,187 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:38:04,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:38:04,006 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2023-12-21 18:38:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 18:38:04,007 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2023-12-21 18:38:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:38:04,007 INFO L225 Difference]: With dead ends: 58 [2023-12-21 18:38:04,007 INFO L226 Difference]: Without dead ends: 41 [2023-12-21 18:38:04,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 18:38:04,008 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:38:04,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 18:38:04,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-21 18:38:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-21 18:38:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:38:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2023-12-21 18:38:04,013 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 38 [2023-12-21 18:38:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:38:04,013 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2023-12-21 18:38:04,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:38:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2023-12-21 18:38:04,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 18:38:04,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:38:04,014 INFO L195 NwaCegarLoop]: trace histogram [22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:38:04,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 18:38:04,216 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 18:38:04,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:38:04,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:38:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash -945422245, now seen corresponding path program 3 times [2023-12-21 18:38:04,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:38:04,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215502763] [2023-12-21 18:38:04,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:38:04,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:38:04,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:38:04,219 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 18:38:04,221 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 18:38:04,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 18:38:04,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:38:04,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 18:38:04,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:38:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-12-21 18:38:04,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:38:04,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:38:04,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215502763] [2023-12-21 18:38:04,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215502763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:38:04,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:38:04,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 18:38:04,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957080066] [2023-12-21 18:38:04,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:38:04,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 18:38:04,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:38:04,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 18:38:04,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:38:04,300 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 18:38:04,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:38:04,320 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2023-12-21 18:38:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 18:38:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2023-12-21 18:38:04,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:38:04,335 INFO L225 Difference]: With dead ends: 53 [2023-12-21 18:38:04,335 INFO L226 Difference]: Without dead ends: 42 [2023-12-21 18:38:04,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 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 18:38:04,336 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:38:04,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:38:04,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-21 18:38:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-21 18:38:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:38:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-12-21 18:38:04,346 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 50 [2023-12-21 18:38:04,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:38:04,347 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-12-21 18:38:04,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 18:38:04,347 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-12-21 18:38:04,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 18:38:04,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:38:04,347 INFO L195 NwaCegarLoop]: trace histogram [22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:38:04,352 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 18:38:04,552 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 18:38:04,553 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:38:04,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:38:04,553 INFO L85 PathProgramCache]: Analyzing trace with hash 456334360, now seen corresponding path program 1 times [2023-12-21 18:38:04,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:38:04,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361384568] [2023-12-21 18:38:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:38:04,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:38:04,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:38:04,555 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 18:38:04,557 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 18:38:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:38:04,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 18:38:04,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:38:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 18:38:04,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:38:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 18:38:06,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:38:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361384568] [2023-12-21 18:38:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361384568] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:38:06,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:38:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 48 [2023-12-21 18:38:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605990174] [2023-12-21 18:38:06,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:38:06,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 18:38:06,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:38:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 18:38:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 18:38:06,159 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:38:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:38:11,641 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2023-12-21 18:38:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 18:38:11,642 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 51 [2023-12-21 18:38:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:38:11,645 INFO L225 Difference]: With dead ends: 84 [2023-12-21 18:38:11,645 INFO L226 Difference]: Without dead ends: 66 [2023-12-21 18:38:11,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 18:38:11,647 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:38:11,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 18:38:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-21 18:38:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-21 18:38:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:38:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2023-12-21 18:38:11,664 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 51 [2023-12-21 18:38:11,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:38:11,664 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2023-12-21 18:38:11,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:38:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2023-12-21 18:38:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 18:38:11,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:38:11,665 INFO L195 NwaCegarLoop]: trace histogram [46, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:38:11,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-21 18:38:11,869 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 18:38:11,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:38:11,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:38:11,870 INFO L85 PathProgramCache]: Analyzing trace with hash 29885592, now seen corresponding path program 2 times [2023-12-21 18:38:11,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:38:11,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160672248] [2023-12-21 18:38:11,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:38:11,870 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 18:38:11,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:38:11,871 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 18:38:11,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 18:38:12,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:38:12,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:38:12,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 18:38:12,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:38:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 18:38:12,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:38:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 18:38:17,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:38:17,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160672248] [2023-12-21 18:38:17,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160672248] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:38:17,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:38:17,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49] total 96 [2023-12-21 18:38:17,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650834884] [2023-12-21 18:38:17,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:38:17,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 18:38:17,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:38:17,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 18:38:17,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 18:38:17,392 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:39:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:39:01,502 INFO L93 Difference]: Finished difference Result 132 states and 187 transitions. [2023-12-21 18:39:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 18:39:01,503 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2023-12-21 18:39:01,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:39:01,503 INFO L225 Difference]: With dead ends: 132 [2023-12-21 18:39:01,503 INFO L226 Difference]: Without dead ends: 114 [2023-12-21 18:39:01,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 18:39:01,507 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 18:39:01,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 722 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 18:39:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-21 18:39:01,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-21 18:39:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:39:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2023-12-21 18:39:01,514 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 75 [2023-12-21 18:39:01,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:39:01,514 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2023-12-21 18:39:01,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:39:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2023-12-21 18:39:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 18:39:01,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:39:01,515 INFO L195 NwaCegarLoop]: trace histogram [94, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:39:01,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 18:39:01,720 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 18:39:01,721 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:39:01,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:39:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1321380456, now seen corresponding path program 3 times [2023-12-21 18:39:01,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:39:01,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098386210] [2023-12-21 18:39:01,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:39:01,722 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 18:39:01,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:39:01,723 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 18:39:01,724 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 18:39:01,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 18:39:01,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:39:01,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:39:01,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:39:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4490 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4477 trivial. 0 not checked. [2023-12-21 18:39:01,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:39:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4490 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4477 trivial. 0 not checked. [2023-12-21 18:39:01,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:39:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098386210] [2023-12-21 18:39:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098386210] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:39:01,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:39:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 18:39:01,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325236848] [2023-12-21 18:39:01,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:39:01,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 18:39:01,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:39:01,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 18:39:01,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:39:01,860 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:39:01,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:39:01,896 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2023-12-21 18:39:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 18:39:01,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 123 [2023-12-21 18:39:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:39:01,898 INFO L225 Difference]: With dead ends: 133 [2023-12-21 18:39:01,898 INFO L226 Difference]: Without dead ends: 117 [2023-12-21 18:39:01,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 240 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 18:39:01,900 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:39:01,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:39:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-21 18:39:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-12-21 18:39:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:39:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2023-12-21 18:39:01,913 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 123 [2023-12-21 18:39:01,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:39:01,913 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2023-12-21 18:39:01,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:39:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2023-12-21 18:39:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 18:39:01,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:39:01,914 INFO L195 NwaCegarLoop]: trace histogram [94, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:39:01,919 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 18:39:02,115 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 18:39:02,115 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:39:02,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:39:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1239885591, now seen corresponding path program 4 times [2023-12-21 18:39:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:39:02,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51524296] [2023-12-21 18:39:02,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:39:02,116 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 18:39:02,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:39:02,118 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 18:39:02,121 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 18:39:02,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:39:02,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:39:02,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 18:39:02,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:39:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-21 18:39:05,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:39:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-21 18:39:23,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:39:23,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51524296] [2023-12-21 18:39:23,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51524296] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:39:23,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:39:23,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 97] total 192 [2023-12-21 18:39:23,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212752774] [2023-12-21 18:39:23,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:39:23,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 18:39:23,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:39:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 18:39:23,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 18:39:23,469 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 192 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 192 states have internal predecessors, (209), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:46:53,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:46:53,518 INFO L93 Difference]: Finished difference Result 234 states and 337 transitions. [2023-12-21 18:46:53,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 18:46:53,519 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 192 states have internal predecessors, (209), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 132 [2023-12-21 18:46:53,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:46:53,520 INFO L225 Difference]: With dead ends: 234 [2023-12-21 18:46:53,520 INFO L226 Difference]: Without dead ends: 213 [2023-12-21 18:46:53,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 465.3s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 18:46:53,526 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 9694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 9695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-21 18:46:53,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1442 Invalid, 9695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9694 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-21 18:46:53,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-21 18:46:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-12-21 18:46:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 208 states have (on average 1.0144230769230769) internal successors, (211), 208 states have internal predecessors, (211), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:46:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2023-12-21 18:46:53,542 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 132 [2023-12-21 18:46:53,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:46:53,542 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2023-12-21 18:46:53,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 192 states have internal predecessors, (209), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:46:53,542 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2023-12-21 18:46:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-21 18:46:53,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:46:53,544 INFO L195 NwaCegarLoop]: trace histogram [190, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:46:53,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 18:46:53,751 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 18:46:53,752 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:46:53,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:46:53,752 INFO L85 PathProgramCache]: Analyzing trace with hash 409257239, now seen corresponding path program 5 times [2023-12-21 18:46:53,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:46:53,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43910824] [2023-12-21 18:46:53,753 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:46:53,753 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 18:46:53,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:46:53,754 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 18:46:53,754 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 18:47:13,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2023-12-21 18:47:13,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:47:13,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 18:47:13,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18260 backedges. 81 proven. 10 refuted. 0 times theorem prover too weak. 18169 trivial. 0 not checked. [2023-12-21 18:47:13,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:47:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18260 backedges. 27 proven. 37 refuted. 0 times theorem prover too weak. 18196 trivial. 0 not checked. [2023-12-21 18:47:13,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:47:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43910824] [2023-12-21 18:47:13,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43910824] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:47:13,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:47:13,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 18:47:13,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177377845] [2023-12-21 18:47:13,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:47:13,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 18:47:13,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:47:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 18:47:13,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 18:47:13,896 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:47:14,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:47:14,052 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2023-12-21 18:47:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:47:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 228 [2023-12-21 18:47:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:47:14,054 INFO L225 Difference]: With dead ends: 238 [2023-12-21 18:47:14,054 INFO L226 Difference]: Without dead ends: 219 [2023-12-21 18:47:14,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:47:14,055 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:14,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:47:14,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-21 18:47:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-12-21 18:47:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.014018691588785) internal successors, (217), 214 states have internal predecessors, (217), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:47:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 223 transitions. [2023-12-21 18:47:14,065 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 223 transitions. Word has length 228 [2023-12-21 18:47:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:47:14,065 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 223 transitions. [2023-12-21 18:47:14,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:47:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 223 transitions. [2023-12-21 18:47:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-21 18:47:14,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:14,067 INFO L195 NwaCegarLoop]: trace histogram [190, 30, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:14,091 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 18:47:14,276 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 18:47:14,276 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:14,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash 396045367, now seen corresponding path program 6 times [2023-12-21 18:47:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:14,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289966393] [2023-12-21 18:47:14,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 18:47:14,277 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 18:47:14,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:14,278 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 18:47:14,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 18:47:14,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 18:47:14,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:47:14,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:47:14,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18683 backedges. 248 proven. 1 refuted. 0 times theorem prover too weak. 18434 trivial. 0 not checked. [2023-12-21 18:47:14,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:47:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18683 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18682 trivial. 0 not checked. [2023-12-21 18:47:14,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:47:14,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289966393] [2023-12-21 18:47:14,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289966393] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:47:14,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:47:14,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 18:47:14,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104513016] [2023-12-21 18:47:14,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:47:14,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 18:47:14,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:47:14,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 18:47:14,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:47:14,564 INFO L87 Difference]: Start difference. First operand 219 states and 223 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:47:14,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:47:14,604 INFO L93 Difference]: Finished difference Result 242 states and 249 transitions. [2023-12-21 18:47:14,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 18:47:14,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 246 [2023-12-21 18:47:14,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:47:14,605 INFO L225 Difference]: With dead ends: 242 [2023-12-21 18:47:14,606 INFO L226 Difference]: Without dead ends: 222 [2023-12-21 18:47:14,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 486 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 18:47:14,606 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:14,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:47:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-21 18:47:14,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2023-12-21 18:47:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.0138248847926268) internal successors, (220), 217 states have internal predecessors, (220), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:47:14,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 226 transitions. [2023-12-21 18:47:14,637 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 226 transitions. Word has length 246 [2023-12-21 18:47:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:47:14,637 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 226 transitions. [2023-12-21 18:47:14,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:47:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 226 transitions. [2023-12-21 18:47:14,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-21 18:47:14,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:47:14,640 INFO L195 NwaCegarLoop]: trace histogram [190, 30, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:47:14,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 18:47:14,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:47:14,843 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:47:14,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:47:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash 270671904, now seen corresponding path program 7 times [2023-12-21 18:47:14,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:47:14,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805773793] [2023-12-21 18:47:14,844 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 18:47:14,844 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 18:47:14,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:47:14,846 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:47:14,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 18:47:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:47:15,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 18:47:15,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:47:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18692 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2023-12-21 18:47:27,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:48:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 18692 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2023-12-21 18:48:41,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:48:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805773793] [2023-12-21 18:48:41,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805773793] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:48:41,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:48:41,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 193] total 384 [2023-12-21 18:48:41,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358933043] [2023-12-21 18:48:41,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:48:41,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 18:48:41,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:48:41,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 18:48:41,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 18:48:41,164 INFO L87 Difference]: Start difference. First operand 222 states and 226 transitions. Second operand has 384 states, 384 states have (on average 1.0442708333333333) internal successors, (401), 384 states have internal predecessors, (401), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:49:23,216 WARN L293 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:49:47,183 WARN L293 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:50:13,099 WARN L293 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:50:39,117 WARN L293 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:51:05,705 WARN L293 SmtUtils]: Spent 7.83s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:51:36,713 WARN L293 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 559 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:52:09,102 WARN L293 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 556 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 18:52:32,112 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:52:32,112 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 18:52:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-12-21 18:52:32,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 273.2s TimeCoverageRelationStatistics Valid=39934, Invalid=112556, Unknown=0, NotChecked=0, Total=152490 [2023-12-21 18:52:32,666 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36680 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:52:32,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36680 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2023-12-21 18:52:32,668 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 18:52:32,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 18:52:32,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:52:32,880 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (222states) and FLOYD_HOARE automaton (currently 200 states, 384 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-184-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-184-1 term,while PolyPacSimplificationTermWalker was simplifying 184 xjuncts wrt. a ATOM-1 context. [2023-12-21 18:52:32,884 INFO L445 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1] [2023-12-21 18:52:32,886 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 18:52:32,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:52:32 BoogieIcfgContainer [2023-12-21 18:52:32,887 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 18:52:32,888 INFO L158 Benchmark]: Toolchain (without parser) took 872952.69ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 216.0MB in the beginning and 212.9MB in the end (delta: 3.1MB). Peak memory consumption was 219.7MB. Max. memory is 8.0GB. [2023-12-21 18:52:32,888 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory was 130.1MB in the beginning and 129.9MB in the end (delta: 164.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 18:52:32,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.31ms. Allocated memory is still 265.3MB. Free memory was 215.6MB in the beginning and 203.8MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 18:52:32,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.26ms. Allocated memory is still 265.3MB. Free memory was 203.8MB in the beginning and 202.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:52:32,888 INFO L158 Benchmark]: Boogie Preprocessor took 40.67ms. Allocated memory is still 265.3MB. Free memory was 202.3MB in the beginning and 199.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:52:32,889 INFO L158 Benchmark]: RCFGBuilder took 310.51ms. Allocated memory is still 265.3MB. Free memory was 199.9MB in the beginning and 184.5MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 18:52:32,889 INFO L158 Benchmark]: TraceAbstraction took 872384.71ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 183.8MB in the beginning and 212.9MB in the end (delta: -29.0MB). Peak memory consumption was 188.3MB. Max. memory is 8.0GB. [2023-12-21 18:52:32,890 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory was 130.1MB in the beginning and 129.9MB in the end (delta: 164.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 189.31ms. Allocated memory is still 265.3MB. Free memory was 215.6MB in the beginning and 203.8MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.26ms. Allocated memory is still 265.3MB. Free memory was 203.8MB in the beginning and 202.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.67ms. Allocated memory is still 265.3MB. Free memory was 202.3MB in the beginning and 199.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 310.51ms. Allocated memory is still 265.3MB. Free memory was 199.9MB in the beginning and 184.5MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 872384.71ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 183.8MB in the beginning and 212.9MB in the end (delta: -29.0MB). Peak memory consumption was 188.3MB. 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: 53]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 53). Cancelled while NwaCegarLoop was constructing difference of abstraction (222states) and FLOYD_HOARE automaton (currently 200 states, 384 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-184-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-184-1 term,while PolyPacSimplificationTermWalker was simplifying 184 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 872.3s, OverallIterations: 14, TraceHistogramMax: 190, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 732.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 24.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 3324 SdHoareTripleChecker+Invalid, 21.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3102 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50108 IncrementalHoareTripleChecker+Invalid, 50118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 222 mSDtfsCounter, 50108 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2696 GetRequests, 1736 SyntacticMatches, 0 SemanticMatches, 959 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5722 ImplicationChecksByTransitivity, 793.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=13, InterpolantAutomatonStates: 413, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 20.6s SatisfiabilityAnalysisTime, 114.8s InterpolantComputationTime, 1329 NumberOfCodeBlocks, 959 NumberOfCodeBlocksAsserted, 116 NumberOfCheckSat, 2505 ConstructedInterpolants, 0 QuantifiedInterpolants, 4789 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4064 ConjunctsInSsa, 400 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 84682/132753 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