/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-examples/standard_partition_original_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 16:26:37,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 16:26:37,854 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 16:26:37,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 16:26:37,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 16:26:37,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 16:26:37,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 16:26:37,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 16:26:37,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 16:26:37,881 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 16:26:37,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 16:26:37,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 16:26:37,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 16:26:37,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 16:26:37,884 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 16:26:37,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 16:26:37,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 16:26:37,884 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 16:26:37,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 16:26:37,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 16:26:37,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 16:26:37,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 16:26:37,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 16:26:37,886 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 16:26:37,886 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 16:26:37,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 16:26:37,887 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 16:26:37,887 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 16:26:37,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 16:26:37,887 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 16:26:37,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 16:26:37,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 16:26:37,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 16:26:37,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 16:26:37,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:26:37,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 16:26:37,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 16:26:37,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 16:26:37,889 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 16:26:37,889 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 16:26:37,889 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 16:26:37,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 16:26:37,889 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 16:26:37,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 16:26:37,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 16:26:37,890 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 16:26:37,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 16:26:38,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 16:26:38,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 16:26:38,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 16:26:38,092 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 16:26:38,092 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 16:26:38,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_original_ground.i [2023-12-21 16:26:39,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 16:26:39,287 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 16:26:39,288 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_original_ground.i [2023-12-21 16:26:39,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ed08dea6/97a932564b374219b96d5facfc87c0e0/FLAG3c6665cbb [2023-12-21 16:26:39,312 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ed08dea6/97a932564b374219b96d5facfc87c0e0 [2023-12-21 16:26:39,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 16:26:39,316 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 16:26:39,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 16:26:39,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 16:26:39,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 16:26:39,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b95d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39, skipping insertion in model container [2023-12-21 16:26:39,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,348 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 16:26:39,463 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-examples/standard_partition_original_ground.i[827,840] [2023-12-21 16:26:39,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:26:39,492 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 16:26:39,503 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-examples/standard_partition_original_ground.i[827,840] [2023-12-21 16:26:39,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:26:39,522 INFO L206 MainTranslator]: Completed translation [2023-12-21 16:26:39,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39 WrapperNode [2023-12-21 16:26:39,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 16:26:39,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 16:26:39,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 16:26:39,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 16:26:39,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,556 INFO L138 Inliner]: procedures = 18, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2023-12-21 16:26:39,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 16:26:39,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 16:26:39,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 16:26:39,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 16:26:39,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,580 INFO L175 MemorySlicer]: Split 10 memory accesses to 4 slices as follows [2, 4, 2, 2]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-12-21 16:26:39,581 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 16:26:39,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 16:26:39,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 16:26:39,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 16:26:39,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (1/1) ... [2023-12-21 16:26:39,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:26:39,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 16:26:39,615 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 16:26:39,648 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 16:26:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 16:26:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 16:26:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 16:26:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 16:26:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-21 16:26:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 16:26:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 16:26:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 16:26:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 16:26:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-21 16:26:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 16:26:39,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 16:26:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 16:26:39,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 16:26:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 16:26:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 16:26:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 16:26:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 16:26:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-21 16:26:39,737 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 16:26:39,738 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 16:26:39,855 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 16:26:39,878 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 16:26:39,878 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-21 16:26:39,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:26:39 BoogieIcfgContainer [2023-12-21 16:26:39,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 16:26:39,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 16:26:39,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 16:26:39,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 16:26:39,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:26:39" (1/3) ... [2023-12-21 16:26:39,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509cf3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:26:39, skipping insertion in model container [2023-12-21 16:26:39,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:39" (2/3) ... [2023-12-21 16:26:39,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509cf3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:26:39, skipping insertion in model container [2023-12-21 16:26:39,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:26:39" (3/3) ... [2023-12-21 16:26:39,884 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_original_ground.i [2023-12-21 16:26:39,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 16:26:39,917 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 16:26:39,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 16:26:39,947 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;@37a0efe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 16:26:39,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 16:26:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 16:26:39,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 16:26:39,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:39,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:39,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:39,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash -382173663, now seen corresponding path program 1 times [2023-12-21 16:26:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:39,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19013598] [2023-12-21 16:26:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:39,966 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 16:26:39,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:39,968 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 16:26:39,972 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 16:26:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:40,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 16:26:40,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:26:40,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:40,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:40,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19013598] [2023-12-21 16:26:40,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19013598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:40,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:40,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:26:40,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601727450] [2023-12-21 16:26:40,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:40,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 16:26:40,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:40,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 16:26:40,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 16:26:40,069 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:40,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:40,096 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2023-12-21 16:26:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 16:26:40,098 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-21 16:26:40,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:40,102 INFO L225 Difference]: With dead ends: 42 [2023-12-21 16:26:40,102 INFO L226 Difference]: Without dead ends: 20 [2023-12-21 16:26:40,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 16:26:40,106 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:40,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:26:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-21 16:26:40,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-21 16:26:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 16:26:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2023-12-21 16:26:40,127 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 10 [2023-12-21 16:26:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:40,127 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2023-12-21 16:26:40,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2023-12-21 16:26:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 16:26:40,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:40,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:40,135 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 (2)] Forceful destruction successful, exit code 0 [2023-12-21 16:26:40,330 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 16:26:40,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:40,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:40,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1554779562, now seen corresponding path program 1 times [2023-12-21 16:26:40,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:40,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352142475] [2023-12-21 16:26:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:40,332 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 16:26:40,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:40,333 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 16:26:40,343 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 16:26:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:40,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 16:26:40,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:26:40,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:40,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:40,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352142475] [2023-12-21 16:26:40,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352142475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:40,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:40,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:26:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16175363] [2023-12-21 16:26:40,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:40,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 16:26:40,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:40,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 16:26:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:26:40,402 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:40,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:40,434 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-12-21 16:26:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 16:26:40,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-21 16:26:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:40,436 INFO L225 Difference]: With dead ends: 39 [2023-12-21 16:26:40,436 INFO L226 Difference]: Without dead ends: 21 [2023-12-21 16:26:40,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 16:26:40,438 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:40,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:26:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-21 16:26:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-21 16:26:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 16:26:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-21 16:26:40,448 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 10 [2023-12-21 16:26:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:40,448 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-21 16:26:40,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-21 16:26:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 16:26:40,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:40,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:40,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-21 16:26:40,651 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 16:26:40,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:40,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1036653493, now seen corresponding path program 1 times [2023-12-21 16:26:40,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:40,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594300315] [2023-12-21 16:26:40,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:40,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:40,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:40,657 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 16:26:40,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 16:26:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:40,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 16:26:40,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:26:40,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:26:40,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:40,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594300315] [2023-12-21 16:26:40,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594300315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:40,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:40,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 16:26:40,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263633979] [2023-12-21 16:26:40,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:40,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 16:26:40,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 16:26:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 16:26:40,743 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:40,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:40,793 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2023-12-21 16:26:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:26:40,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 16:26:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:40,796 INFO L225 Difference]: With dead ends: 42 [2023-12-21 16:26:40,796 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 16:26:40,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 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 16:26:40,799 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:40,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:26:40,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 16:26:40,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-21 16:26:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 16:26:40,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-12-21 16:26:40,803 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 11 [2023-12-21 16:26:40,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:40,803 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-12-21 16:26:40,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:40,803 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-12-21 16:26:40,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-21 16:26:40,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:40,804 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:40,810 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 16:26:41,005 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 16:26:41,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:41,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1224558486, now seen corresponding path program 2 times [2023-12-21 16:26:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:41,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711258888] [2023-12-21 16:26:41,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:26:41,009 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 16:26:41,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:41,010 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 16:26:41,018 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 16:26:41,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 16:26:41,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:41,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 16:26:41,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 16:26:41,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:41,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:41,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711258888] [2023-12-21 16:26:41,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711258888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:41,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:41,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:26:41,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243826832] [2023-12-21 16:26:41,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:41,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 16:26:41,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:41,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 16:26:41,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:26:41,082 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:41,131 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2023-12-21 16:26:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 16:26:41,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-21 16:26:41,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:41,132 INFO L225 Difference]: With dead ends: 41 [2023-12-21 16:26:41,132 INFO L226 Difference]: Without dead ends: 27 [2023-12-21 16:26:41,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 16:26:41,133 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:41,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 31 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:26:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-21 16:26:41,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-12-21 16:26:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 16:26:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-12-21 16:26:41,137 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 14 [2023-12-21 16:26:41,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:41,137 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-12-21 16:26:41,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-12-21 16:26:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 16:26:41,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:41,138 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:41,142 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 16:26:41,339 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 16:26:41,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:41,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:41,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1657178087, now seen corresponding path program 1 times [2023-12-21 16:26:41,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:41,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921973101] [2023-12-21 16:26:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:41,340 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 16:26:41,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:41,341 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 16:26:41,346 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 16:26:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:41,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:26:41,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:26:41,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:26:41,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:41,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921973101] [2023-12-21 16:26:41,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921973101] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:41,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:41,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 16:26:41,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802047435] [2023-12-21 16:26:41,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:41,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 16:26:41,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:41,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 16:26:41,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 16:26:41,541 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:41,696 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2023-12-21 16:26:41,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 16:26:41,697 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 16:26:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:41,697 INFO L225 Difference]: With dead ends: 50 [2023-12-21 16:26:41,698 INFO L226 Difference]: Without dead ends: 31 [2023-12-21 16:26:41,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 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 16:26:41,698 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:41,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:26:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-21 16:26:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-21 16:26:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 16:26:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-12-21 16:26:41,703 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2023-12-21 16:26:41,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:41,703 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-12-21 16:26:41,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:41,704 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-12-21 16:26:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 16:26:41,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:41,704 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:41,706 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 16:26:41,906 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 16:26:41,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:41,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:41,907 INFO L85 PathProgramCache]: Analyzing trace with hash -552134599, now seen corresponding path program 2 times [2023-12-21 16:26:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:41,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794376132] [2023-12-21 16:26:41,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:26:41,908 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 16:26:41,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:41,914 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 16:26:41,914 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 16:26:41,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:26:41,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:41,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 16:26:41,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:26:42,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:26:42,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:42,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794376132] [2023-12-21 16:26:42,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794376132] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:42,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:42,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 16:26:42,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2405147] [2023-12-21 16:26:42,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:42,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 16:26:42,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 16:26:42,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 16:26:42,404 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:43,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:43,214 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2023-12-21 16:26:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 16:26:43,214 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-21 16:26:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:43,215 INFO L225 Difference]: With dead ends: 62 [2023-12-21 16:26:43,215 INFO L226 Difference]: Without dead ends: 43 [2023-12-21 16:26:43,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 16:26:43,216 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:43,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 230 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 16:26:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-21 16:26:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-21 16:26:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 16:26:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-12-21 16:26:43,222 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 23 [2023-12-21 16:26:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:43,222 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-12-21 16:26:43,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-12-21 16:26:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 16:26:43,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:43,223 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:43,228 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 16:26:43,426 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 16:26:43,426 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:43,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash 466784377, now seen corresponding path program 3 times [2023-12-21 16:26:43,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:43,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331432328] [2023-12-21 16:26:43,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:26:43,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:43,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:43,428 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 16:26:43,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 16:26:43,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 16:26:43,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:43,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 16:26:43,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:43,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-21 16:26:43,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 16:26:43,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 16:26:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-21 16:26:43,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:43,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-12-21 16:26:43,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2023-12-21 16:26:43,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2023-12-21 16:26:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-21 16:26:44,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:44,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331432328] [2023-12-21 16:26:44,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331432328] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:44,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:44,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-21 16:26:44,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794839310] [2023-12-21 16:26:44,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:44,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 16:26:44,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:44,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 16:26:44,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-21 16:26:44,011 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:44,363 INFO L93 Difference]: Finished difference Result 98 states and 124 transitions. [2023-12-21 16:26:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 16:26:44,364 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 16:26:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:44,365 INFO L225 Difference]: With dead ends: 98 [2023-12-21 16:26:44,365 INFO L226 Difference]: Without dead ends: 96 [2023-12-21 16:26:44,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-21 16:26:44,366 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 68 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:44,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 190 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 16:26:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-21 16:26:44,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 56. [2023-12-21 16:26:44,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.2) internal successors, (60), 51 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 16:26:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2023-12-21 16:26:44,376 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 35 [2023-12-21 16:26:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:44,376 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2023-12-21 16:26:44,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2023-12-21 16:26:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 16:26:44,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:44,377 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:44,382 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 (8)] Ended with exit code 0 [2023-12-21 16:26:44,580 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 16:26:44,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:44,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:44,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1146842747, now seen corresponding path program 1 times [2023-12-21 16:26:44,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:44,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496566566] [2023-12-21 16:26:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:44,581 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 16:26:44,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:44,583 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 16:26:44,585 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 16:26:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:44,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 16:26:44,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:26:44,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:26:46,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:46,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496566566] [2023-12-21 16:26:46,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496566566] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:46,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:46,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 16:26:46,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088930402] [2023-12-21 16:26:46,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:46,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 16:26:46,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:46,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 16:26:46,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 16:26:46,135 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:51,598 INFO L93 Difference]: Finished difference Result 112 states and 155 transitions. [2023-12-21 16:26:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 16:26:51,598 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 16:26:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:51,600 INFO L225 Difference]: With dead ends: 112 [2023-12-21 16:26:51,600 INFO L226 Difference]: Without dead ends: 80 [2023-12-21 16:26:51,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 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 16:26:51,602 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:51,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 477 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 16:26:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-21 16:26:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-21 16:26:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 74 states have (on average 1.135135135135135) internal successors, (84), 75 states have internal predecessors, (84), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 16:26:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2023-12-21 16:26:51,611 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 35 [2023-12-21 16:26:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:51,611 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2023-12-21 16:26:51,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2023-12-21 16:26:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 16:26:51,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:51,613 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:51,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 16:26:51,813 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 16:26:51,813 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:51,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:51,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2018197243, now seen corresponding path program 2 times [2023-12-21 16:26:51,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:51,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972697756] [2023-12-21 16:26:51,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:26:51,814 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 16:26:51,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:51,815 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 16:26:51,816 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 16:26:51,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 16:26:51,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:51,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 16:26:51,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2023-12-21 16:26:51,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:51,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:51,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972697756] [2023-12-21 16:26:51,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972697756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:51,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:51,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 16:26:51,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74820683] [2023-12-21 16:26:51,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:51,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 16:26:51,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:51,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 16:26:51,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 16:26:51,947 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:51,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:51,987 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2023-12-21 16:26:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 16:26:51,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-21 16:26:51,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:51,988 INFO L225 Difference]: With dead ends: 102 [2023-12-21 16:26:51,988 INFO L226 Difference]: Without dead ends: 89 [2023-12-21 16:26:51,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 16:26:51,989 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 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 16:26:51,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:26:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-21 16:26:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2023-12-21 16:26:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 76 states have (on average 1.131578947368421) internal successors, (86), 77 states have internal predecessors, (86), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 16:26:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2023-12-21 16:26:51,998 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 59 [2023-12-21 16:26:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:51,998 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2023-12-21 16:26:51,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2023-12-21 16:26:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 16:26:51,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:51,999 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:52,004 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 16:26:52,201 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 16:26:52,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:52,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:52,201 INFO L85 PathProgramCache]: Analyzing trace with hash -917062339, now seen corresponding path program 1 times [2023-12-21 16:26:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:52,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612228768] [2023-12-21 16:26:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:52,202 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 16:26:52,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:52,204 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 16:26:52,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 16:26:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:52,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 16:26:52,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:26:53,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:26:57,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:57,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612228768] [2023-12-21 16:26:57,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612228768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:57,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:57,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 16:26:57,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489138836] [2023-12-21 16:26:57,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:57,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 16:26:57,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:57,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 16:26:57,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 16:26:57,873 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 96 states, 96 states have (on average 1.125) internal successors, (108), 95 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:27:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:27:44,805 INFO L93 Difference]: Finished difference Result 164 states and 231 transitions. [2023-12-21 16:27:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 16:27:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.125) internal successors, (108), 95 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-21 16:27:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:27:44,818 INFO L225 Difference]: With dead ends: 164 [2023-12-21 16:27:44,819 INFO L226 Difference]: Without dead ends: 130 [2023-12-21 16:27:44,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 16:27:44,830 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 16:27:44,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 914 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 16:27:44,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-21 16:27:44,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-12-21 16:27:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 124 states have (on average 1.0806451612903225) internal successors, (134), 125 states have internal predecessors, (134), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 16:27:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2023-12-21 16:27:44,842 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 61 [2023-12-21 16:27:44,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:27:44,843 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2023-12-21 16:27:44,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.125) internal successors, (108), 95 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:27:44,843 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2023-12-21 16:27:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 16:27:44,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:27:44,854 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:27:44,859 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 16:27:45,058 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 16:27:45,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:27:45,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:27:45,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1855299133, now seen corresponding path program 2 times [2023-12-21 16:27:45,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:27:45,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933071552] [2023-12-21 16:27:45,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:27:45,061 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 16:27:45,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:27:45,062 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 16:27:45,084 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 16:27:45,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 16:27:45,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:27:45,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 16:27:45,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:27:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4466 trivial. 0 not checked. [2023-12-21 16:27:45,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:27:45,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:27:45,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933071552] [2023-12-21 16:27:45,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933071552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:27:45,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:27:45,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 16:27:45,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742887610] [2023-12-21 16:27:45,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:27:45,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 16:27:45,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:27:45,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 16:27:45,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 16:27:45,280 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:27:45,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:27:45,340 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2023-12-21 16:27:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 16:27:45,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-21 16:27:45,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:27:45,343 INFO L225 Difference]: With dead ends: 159 [2023-12-21 16:27:45,343 INFO L226 Difference]: Without dead ends: 147 [2023-12-21 16:27:45,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 16:27:45,345 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 49 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 16:27:45,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 49 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:27:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-21 16:27:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2023-12-21 16:27:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 136 states have (on average 1.1102941176470589) internal successors, (151), 138 states have internal predecessors, (151), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 16:27:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 161 transitions. [2023-12-21 16:27:45,363 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 161 transitions. Word has length 109 [2023-12-21 16:27:45,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:27:45,363 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 161 transitions. [2023-12-21 16:27:45,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:27:45,363 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 161 transitions. [2023-12-21 16:27:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 16:27:45,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:27:45,366 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:27:45,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-21 16:27:45,578 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 16:27:45,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:27:45,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:27:45,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1738603585, now seen corresponding path program 1 times [2023-12-21 16:27:45,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:27:45,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281686450] [2023-12-21 16:27:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:27:45,579 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 16:27:45,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:27:45,580 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 16:27:45,582 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 16:27:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:27:45,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 16:27:45,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:27:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:27:48,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:28:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:28:07,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:28:07,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281686450] [2023-12-21 16:28:07,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281686450] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:28:07,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:28:07,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 16:28:07,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69380843] [2023-12-21 16:28:07,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:28:07,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 16:28:07,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:28:07,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 16:28:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 16:28:07,426 INFO L87 Difference]: Start difference. First operand 144 states and 161 transitions. Second operand has 192 states, 192 states have (on average 1.0625) internal successors, (204), 191 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:36:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:36:17,923 INFO L93 Difference]: Finished difference Result 288 states and 417 transitions. [2023-12-21 16:36:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 16:36:17,923 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0625) internal successors, (204), 191 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-21 16:36:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:36:17,924 INFO L225 Difference]: With dead ends: 288 [2023-12-21 16:36:17,924 INFO L226 Difference]: Without dead ends: 240 [2023-12-21 16:36:17,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 505.4s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 16:36:17,933 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 9602 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 9603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-21 16:36:17,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1845 Invalid, 9603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9602 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-21 16:36:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-21 16:36:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2023-12-21 16:36:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 232 states have (on average 1.0646551724137931) internal successors, (247), 234 states have internal predecessors, (247), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 16:36:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 257 transitions. [2023-12-21 16:36:17,955 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 257 transitions. Word has length 109 [2023-12-21 16:36:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:36:17,955 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 257 transitions. [2023-12-21 16:36:17,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0625) internal successors, (204), 191 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:36:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 257 transitions. [2023-12-21 16:36:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-21 16:36:17,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:36:17,957 INFO L195 NwaCegarLoop]: trace histogram [190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:36:17,966 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 16:36:18,164 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 16:36:18,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:36:18,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:36:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1142241857, now seen corresponding path program 2 times [2023-12-21 16:36:18,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:36:18,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711976785] [2023-12-21 16:36:18,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:36:18,165 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 16:36:18,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:36:18,166 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 16:36:18,184 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 16:36:18,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:36:18,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:36:18,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 16:36:18,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:36:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18146 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:36:29,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:37:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 18146 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 16:37:48,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:37:48,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711976785] [2023-12-21 16:37:48,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711976785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:37:48,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:37:48,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 16:37:48,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549215495] [2023-12-21 16:37:48,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:37:48,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 16:37:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:37:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 16:37:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 16:37:48,517 INFO L87 Difference]: Start difference. First operand 240 states and 257 transitions. Second operand has 384 states, 384 states have (on average 1.03125) internal successors, (396), 383 states have internal predecessors, (396), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:38:34,991 WARN L293 SmtUtils]: Spent 8.90s 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 16:39:04,141 WARN L293 SmtUtils]: Spent 9.65s 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 16:39:34,428 WARN L293 SmtUtils]: Spent 8.93s 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 16:40:04,710 WARN L293 SmtUtils]: Spent 8.62s 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 16:40:34,431 WARN L293 SmtUtils]: Spent 8.07s 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 16:41:06,760 WARN L293 SmtUtils]: Spent 8.25s 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) Received shutdown request... [2023-12-21 16:41:20,958 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 16:41:20,958 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 16:41:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2023-12-21 16:41:20,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 265.7s TimeCoverageRelationStatistics Valid=39550, Invalid=112160, Unknown=0, NotChecked=0, Total=151710 [2023-12-21 16:41:20,970 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36679 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:20,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36679 Invalid, 0 Unknown, 0 Unchecked, 19.2s Time] [2023-12-21 16:41:20,972 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 16:41:20,985 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 (14)] Ended with exit code 0 [2023-12-21 16:41:21,183 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 16:41:21,183 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (240states) and FLOYD_HOARE automaton (currently 199 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 390 known predicates. [2023-12-21 16:41:21,187 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 1, 1] [2023-12-21 16:41:21,188 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 16:41:21,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:41:21 BoogieIcfgContainer [2023-12-21 16:41:21,189 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 16:41:21,190 INFO L158 Benchmark]: Toolchain (without parser) took 881873.48ms. Allocated memory was 333.4MB in the beginning and 414.2MB in the end (delta: 80.7MB). Free memory was 273.9MB in the beginning and 300.7MB in the end (delta: -26.8MB). Peak memory consumption was 266.1MB. Max. memory is 8.0GB. [2023-12-21 16:41:21,190 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 16:41:21,190 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.27ms. Allocated memory is still 333.4MB. Free memory was 273.9MB in the beginning and 262.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 16:41:21,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.57ms. Allocated memory is still 333.4MB. Free memory was 262.3MB in the beginning and 260.6MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 16:41:21,190 INFO L158 Benchmark]: Boogie Preprocessor took 33.15ms. Allocated memory is still 333.4MB. Free memory was 260.6MB in the beginning and 258.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:41:21,190 INFO L158 Benchmark]: RCFGBuilder took 287.95ms. Allocated memory is still 333.4MB. Free memory was 258.2MB in the beginning and 242.9MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 16:41:21,191 INFO L158 Benchmark]: TraceAbstraction took 881309.48ms. Allocated memory was 333.4MB in the beginning and 414.2MB in the end (delta: 80.7MB). Free memory was 242.2MB in the beginning and 300.7MB in the end (delta: -58.5MB). Peak memory consumption was 234.7MB. Max. memory is 8.0GB. [2023-12-21 16:41:21,191 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 203.27ms. Allocated memory is still 333.4MB. Free memory was 273.9MB in the beginning and 262.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.57ms. Allocated memory is still 333.4MB. Free memory was 262.3MB in the beginning and 260.6MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.15ms. Allocated memory is still 333.4MB. Free memory was 260.6MB in the beginning and 258.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 287.95ms. Allocated memory is still 333.4MB. Free memory was 258.2MB in the beginning and 242.9MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 881309.48ms. Allocated memory was 333.4MB in the beginning and 414.2MB in the end (delta: 80.7MB). Free memory was 242.2MB in the beginning and 300.7MB in the end (delta: -58.5MB). Peak memory consumption was 234.7MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (240states) and FLOYD_HOARE automaton (currently 199 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 390 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 881.3s, OverallIterations: 13, TraceHistogramMax: 190, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 757.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 27.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 4052 SdHoareTripleChecker+Invalid, 24.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3800 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50025 IncrementalHoareTripleChecker+Invalid, 50054 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 252 mSDtfsCounter, 50025 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1362 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 955 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5757 ImplicationChecksByTransitivity, 829.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=12, InterpolantAutomatonStates: 409, 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, 12 MinimizatonAttempts, 52 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 119.8s InterpolantComputationTime, 698 NumberOfCodeBlocks, 528 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1173 ConstructedInterpolants, 0 QuantifiedInterpolants, 4268 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2507 ConjunctsInSsa, 406 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 6076/54098 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