/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-tiling/tcpy.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 17:54:47,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 17:54:47,658 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 17:54:47,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 17:54:47,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 17:54:47,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 17:54:47,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 17:54:47,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 17:54:47,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 17:54:47,693 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 17:54:47,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 17:54:47,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 17:54:47,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 17:54:47,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 17:54:47,695 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 17:54:47,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 17:54:47,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 17:54:47,696 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 17:54:47,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 17:54:47,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 17:54:47,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 17:54:47,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 17:54:47,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 17:54:47,697 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 17:54:47,697 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 17:54:47,697 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 17:54:47,697 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 17:54:47,697 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 17:54:47,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 17:54:47,698 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 17:54:47,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 17:54:47,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 17:54:47,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 17:54:47,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 17:54:47,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:54:47,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 17:54:47,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 17:54:47,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 17:54:47,699 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 17:54:47,699 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 17:54:47,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 17:54:47,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 17:54:47,700 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 17:54:47,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 17:54:47,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 17:54:47,700 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 17:54:47,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 17:54:47,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 17:54:47,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 17:54:47,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 17:54:47,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 17:54:47,899 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 17:54:47,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/tcpy.c [2023-12-21 17:54:48,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 17:54:48,968 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 17:54:48,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/tcpy.c [2023-12-21 17:54:48,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0359e8bf7/8ec7f4fe2429402fa40d8d993e435278/FLAGb3c0fc4f3 [2023-12-21 17:54:49,384 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0359e8bf7/8ec7f4fe2429402fa40d8d993e435278 [2023-12-21 17:54:49,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 17:54:49,387 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 17:54:49,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 17:54:49,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 17:54:49,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 17:54:49,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db73aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49, skipping insertion in model container [2023-12-21 17:54:49,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,415 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 17:54:49,536 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-tiling/tcpy.c[395,408] [2023-12-21 17:54:49,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:54:49,581 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 17:54:49,595 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-tiling/tcpy.c[395,408] [2023-12-21 17:54:49,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:54:49,621 INFO L206 MainTranslator]: Completed translation [2023-12-21 17:54:49,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49 WrapperNode [2023-12-21 17:54:49,622 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 17:54:49,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 17:54:49,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 17:54:49,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 17:54:49,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,648 INFO L138 Inliner]: procedures = 18, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-12-21 17:54:49,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 17:54:49,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 17:54:49,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 17:54:49,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 17:54:49,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,661 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,671 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 7, 4, 3]. 44 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 3 writes are split as follows [0, 0, 1, 2]. [2023-12-21 17:54:49,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,677 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 17:54:49,696 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 17:54:49,696 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 17:54:49,696 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 17:54:49,697 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (1/1) ... [2023-12-21 17:54:49,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:54:49,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 17:54:49,728 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 17:54:49,747 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 17:54:49,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 17:54:49,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 17:54:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 17:54:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 17:54:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-21 17:54:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-21 17:54:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 17:54:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 17:54:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 17:54:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-21 17:54:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 17:54:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 17:54:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 17:54:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 17:54:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 17:54:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-21 17:54:49,837 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 17:54:49,838 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 17:54:50,032 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 17:54:50,068 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 17:54:50,068 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 17:54:50,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:54:50 BoogieIcfgContainer [2023-12-21 17:54:50,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 17:54:50,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 17:54:50,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 17:54:50,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 17:54:50,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:54:49" (1/3) ... [2023-12-21 17:54:50,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@968a006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:54:50, skipping insertion in model container [2023-12-21 17:54:50,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:54:49" (2/3) ... [2023-12-21 17:54:50,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@968a006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:54:50, skipping insertion in model container [2023-12-21 17:54:50,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:54:50" (3/3) ... [2023-12-21 17:54:50,074 INFO L112 eAbstractionObserver]: Analyzing ICFG tcpy.c [2023-12-21 17:54:50,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 17:54:50,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 17:54:50,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 17:54:50,118 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;@3a88a4d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 17:54:50,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 17:54:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 17:54:50,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:54:50,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:54:50,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:54:50,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:54:50,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1481934315, now seen corresponding path program 1 times [2023-12-21 17:54:50,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:54:50,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343869278] [2023-12-21 17:54:50,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:54:50,141 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 17:54:50,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:54:50,143 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 17:54:50,146 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 17:54:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:54:50,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 17:54:50,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:54:50,213 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 17:54:50,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:54:50,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:54:50,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343869278] [2023-12-21 17:54:50,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343869278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:54:50,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:54:50,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 17:54:50,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227482570] [2023-12-21 17:54:50,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:54:50,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 17:54:50,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:54:50,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 17:54:50,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:54:50,236 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:50,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:54:50,270 INFO L93 Difference]: Finished difference Result 31 states and 46 transitions. [2023-12-21 17:54:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 17:54:50,272 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 17:54:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:54:50,301 INFO L225 Difference]: With dead ends: 31 [2023-12-21 17:54:50,301 INFO L226 Difference]: Without dead ends: 13 [2023-12-21 17:54:50,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 17:54:50,305 INFO L413 NwaCegarLoop]: 16 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, 16 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 17:54:50,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:54:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-21 17:54:50,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-21 17:54:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-12-21 17:54:50,325 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 11 [2023-12-21 17:54:50,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:54:50,326 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-12-21 17:54:50,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-12-21 17:54:50,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 17:54:50,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:54:50,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:54:50,332 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 17:54:50,532 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 17:54:50,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:54:50,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:54:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1216766567, now seen corresponding path program 1 times [2023-12-21 17:54:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:54:50,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627983555] [2023-12-21 17:54:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:54:50,536 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 17:54:50,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:54:50,537 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 17:54:50,540 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 17:54:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:54:50,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 17:54:50,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:54:50,652 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 17:54:50,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:54:50,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:54:50,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627983555] [2023-12-21 17:54:50,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627983555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:54:50,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:54:50,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 17:54:50,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100263017] [2023-12-21 17:54:50,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:54:50,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 17:54:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:54:50,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 17:54:50,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 17:54:50,656 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:54:50,740 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-12-21 17:54:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 17:54:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 17:54:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:54:50,741 INFO L225 Difference]: With dead ends: 24 [2023-12-21 17:54:50,741 INFO L226 Difference]: Without dead ends: 14 [2023-12-21 17:54:50,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 17:54:50,742 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:54:50,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:54:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-21 17:54:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-21 17:54:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-21 17:54:50,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2023-12-21 17:54:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:54:50,746 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-21 17:54:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-21 17:54:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 17:54:50,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:54:50,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:54:50,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 17:54:50,948 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 17:54:50,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:54:50,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:54:50,949 INFO L85 PathProgramCache]: Analyzing trace with hash 821583593, now seen corresponding path program 1 times [2023-12-21 17:54:50,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:54:50,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278811287] [2023-12-21 17:54:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:54:50,950 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 17:54:50,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:54:50,951 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 17:54:50,955 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 17:54:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:54:50,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 17:54:50,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:54:51,052 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 17:54:51,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:54:51,104 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 17:54:51,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:54:51,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278811287] [2023-12-21 17:54:51,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278811287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:54:51,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:54:51,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 17:54:51,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113768904] [2023-12-21 17:54:51,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:54:51,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 17:54:51,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:54:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 17:54:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 17:54:51,110 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:51,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:54:51,266 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2023-12-21 17:54:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 17:54:51,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-21 17:54:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:54:51,267 INFO L225 Difference]: With dead ends: 25 [2023-12-21 17:54:51,267 INFO L226 Difference]: Without dead ends: 15 [2023-12-21 17:54:51,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-21 17:54:51,268 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:54:51,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:54:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-21 17:54:51,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-21 17:54:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-12-21 17:54:51,271 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2023-12-21 17:54:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:54:51,271 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-12-21 17:54:51,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:51,271 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-21 17:54:51,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 17:54:51,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:54:51,272 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:54:51,276 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 17:54:51,473 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 17:54:51,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:54:51,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:54:51,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1455813287, now seen corresponding path program 2 times [2023-12-21 17:54:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:54:51,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323977055] [2023-12-21 17:54:51,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:54:51,475 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 17:54:51,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:54:51,476 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 17:54:51,478 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 17:54:51,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 17:54:51,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:54:51,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 17:54:51,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:54:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 17:54:51,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:54:51,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:54:51,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323977055] [2023-12-21 17:54:51,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323977055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:54:51,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:54:51,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 17:54:51,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518025281] [2023-12-21 17:54:51,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:54:51,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 17:54:51,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:54:51,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 17:54:51,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 17:54:51,598 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:51,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:54:51,676 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2023-12-21 17:54:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 17:54:51,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-21 17:54:51,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:54:51,678 INFO L225 Difference]: With dead ends: 27 [2023-12-21 17:54:51,678 INFO L226 Difference]: Without dead ends: 21 [2023-12-21 17:54:51,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 17:54:51,679 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 34 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:54:51,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 10 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:54:51,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-21 17:54:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2023-12-21 17:54:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-12-21 17:54:51,682 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2023-12-21 17:54:51,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:54:51,682 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-12-21 17:54:51,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:51,682 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-21 17:54:51,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-21 17:54:51,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:54:51,683 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:54:51,691 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 17:54:51,886 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 17:54:51,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:54:51,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:54:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash -891004250, now seen corresponding path program 1 times [2023-12-21 17:54:51,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:54:51,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974587765] [2023-12-21 17:54:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:54:51,888 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 17:54:51,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:54:51,889 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 17:54:51,890 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 17:54:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:54:51,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 17:54:51,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:54:52,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:54:52,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2023-12-21 17:54:52,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 17:54:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 17:54:52,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:54:52,190 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 38 treesize of output 36 [2023-12-21 17:54:52,195 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 230 treesize of output 226 [2023-12-21 17:54:52,212 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-12-21 17:54:52,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 79 [2023-12-21 17:54:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 17:54:52,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:54:52,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974587765] [2023-12-21 17:54:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974587765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:54:52,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:54:52,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-12-21 17:54:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865142694] [2023-12-21 17:54:52,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:54:52,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 17:54:52,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:54:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 17:54:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-21 17:54:52,235 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:52,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:54:52,430 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2023-12-21 17:54:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 17:54:52,430 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-21 17:54:52,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:54:52,430 INFO L225 Difference]: With dead ends: 21 [2023-12-21 17:54:52,430 INFO L226 Difference]: Without dead ends: 19 [2023-12-21 17:54:52,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 17:54:52,432 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:54:52,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 17:54:52,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-21 17:54:52,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-12-21 17:54:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-12-21 17:54:52,436 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2023-12-21 17:54:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:54:52,436 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-12-21 17:54:52,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-12-21 17:54:52,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 17:54:52,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:54:52,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:54:52,458 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 17:54:52,656 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 17:54:52,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:54:52,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:54:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1004487102, now seen corresponding path program 1 times [2023-12-21 17:54:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:54:52,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683459854] [2023-12-21 17:54:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:54:52,658 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 17:54:52,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:54:52,659 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 17:54:52,660 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 17:54:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:54:52,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 17:54:52,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:54:52,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:54:52,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 17:54:53,118 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:54:53,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:54:53,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 17:54:53,128 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:54:53,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:54:53,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 17:54:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:54:53,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:54:53,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:54:53,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2023-12-21 17:54:53,566 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 28 treesize of output 26 [2023-12-21 17:54:53,575 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 68 treesize of output 64 [2023-12-21 17:54:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:54:53,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:54:53,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683459854] [2023-12-21 17:54:53,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683459854] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:54:53,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:54:53,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-21 17:54:53,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011843474] [2023-12-21 17:54:53,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:54:53,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 17:54:53,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:54:53,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 17:54:53,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-12-21 17:54:53,869 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:54:55,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 17:54:57,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 17:55:01,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 17:55:02,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:55:02,280 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-12-21 17:55:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 17:55:02,280 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 17:55:02,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:55:02,281 INFO L225 Difference]: With dead ends: 71 [2023-12-21 17:55:02,281 INFO L226 Difference]: Without dead ends: 49 [2023-12-21 17:55:02,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=420, Invalid=1560, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 17:55:02,282 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 137 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:55:02,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 103 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 220 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2023-12-21 17:55:02,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-21 17:55:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2023-12-21 17:55:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-12-21 17:55:02,288 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 17 [2023-12-21 17:55:02,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:55:02,288 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-12-21 17:55:02,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:02,289 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-12-21 17:55:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 17:55:02,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:55:02,289 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:55:02,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-21 17:55:02,492 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 17:55:02,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:55:02,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:55:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1576853886, now seen corresponding path program 2 times [2023-12-21 17:55:02,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:55:02,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113644168] [2023-12-21 17:55:02,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:55:02,493 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 17:55:02,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:55:02,494 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 17:55:02,495 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 17:55:02,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:55:02,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:55:02,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 17:55:02,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:55:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 17:55:02,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:55:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 17:55:06,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:55:06,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113644168] [2023-12-21 17:55:06,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113644168] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:55:06,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:55:06,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-21 17:55:06,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852333586] [2023-12-21 17:55:06,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:55:06,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 17:55:06,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:55:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 17:55:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2023-12-21 17:55:06,203 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:55:08,395 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2023-12-21 17:55:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 17:55:08,395 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-21 17:55:08,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:55:08,396 INFO L225 Difference]: With dead ends: 79 [2023-12-21 17:55:08,398 INFO L226 Difference]: Without dead ends: 64 [2023-12-21 17:55:08,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 17:55:08,399 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 210 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:55:08,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 100 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 17:55:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-21 17:55:08,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2023-12-21 17:55:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:08,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2023-12-21 17:55:08,408 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 19 [2023-12-21 17:55:08,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:55:08,408 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2023-12-21 17:55:08,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2023-12-21 17:55:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 17:55:08,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:55:08,409 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:55:08,414 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 17:55:08,615 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 17:55:08,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:55:08,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:55:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1859733887, now seen corresponding path program 3 times [2023-12-21 17:55:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:55:08,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238801215] [2023-12-21 17:55:08,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:55:08,617 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 17:55:08,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:55:08,618 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 17:55:08,618 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 17:55:08,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 17:55:08,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:55:08,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 17:55:08,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:55:08,737 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 17:55:08,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:55:08,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 1 [2023-12-21 17:55:08,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 17:55:08,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:55:08,941 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 42 treesize of output 40 [2023-12-21 17:55:08,943 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 108 treesize of output 104 [2023-12-21 17:55:08,955 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-12-21 17:55:08,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 69 [2023-12-21 17:55:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 17:55:08,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:55:08,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238801215] [2023-12-21 17:55:08,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238801215] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:55:08,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:55:08,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-12-21 17:55:08,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423504563] [2023-12-21 17:55:08,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:55:08,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 17:55:08,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:55:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 17:55:08,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-12-21 17:55:08,991 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:09,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:55:09,297 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2023-12-21 17:55:09,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 17:55:09,297 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-21 17:55:09,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:55:09,298 INFO L225 Difference]: With dead ends: 58 [2023-12-21 17:55:09,298 INFO L226 Difference]: Without dead ends: 56 [2023-12-21 17:55:09,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-12-21 17:55:09,299 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:55:09,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 61 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 17:55:09,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-21 17:55:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2023-12-21 17:55:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-12-21 17:55:09,306 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 20 [2023-12-21 17:55:09,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:55:09,306 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-12-21 17:55:09,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-12-21 17:55:09,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 17:55:09,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:55:09,307 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:55:09,312 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 17:55:09,509 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 17:55:09,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:55:09,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:55:09,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1972268471, now seen corresponding path program 4 times [2023-12-21 17:55:09,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:55:09,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000292983] [2023-12-21 17:55:09,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:55:09,510 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 17:55:09,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:55:09,511 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 17:55:09,512 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 17:55:09,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:55:09,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:55:09,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 17:55:09,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:55:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 17:55:09,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:55:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 17:55:09,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:55:09,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000292983] [2023-12-21 17:55:09,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000292983] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:55:09,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:55:09,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-21 17:55:09,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637394164] [2023-12-21 17:55:09,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:55:09,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 17:55:09,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:55:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 17:55:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-21 17:55:09,787 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:10,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:55:10,960 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2023-12-21 17:55:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 17:55:10,961 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 17:55:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:55:10,961 INFO L225 Difference]: With dead ends: 90 [2023-12-21 17:55:10,962 INFO L226 Difference]: Without dead ends: 55 [2023-12-21 17:55:10,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2023-12-21 17:55:10,962 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 82 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:55:10,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 36 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 17:55:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-21 17:55:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2023-12-21 17:55:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2023-12-21 17:55:10,987 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 22 [2023-12-21 17:55:10,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:55:10,987 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2023-12-21 17:55:10,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2023-12-21 17:55:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 17:55:10,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:55:10,989 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:55:10,993 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 (10)] Ended with exit code 0 [2023-12-21 17:55:11,195 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 17:55:11,196 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:55:11,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:55:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1751126151, now seen corresponding path program 5 times [2023-12-21 17:55:11,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:55:11,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013024048] [2023-12-21 17:55:11,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:55:11,196 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 17:55:11,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:55:11,197 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 17:55:11,218 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 17:55:11,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-21 17:55:11,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:55:11,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 17:55:11,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:55:11,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:55:11,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 17:55:11,892 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:55:11,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:55:11,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 17:55:11,899 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:55:11,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:55:11,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 17:55:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:55:11,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:55:12,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:55:12,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2023-12-21 17:55:12,527 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 28 treesize of output 26 [2023-12-21 17:55:12,539 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 170 treesize of output 162 [2023-12-21 17:55:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:55:13,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:55:13,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013024048] [2023-12-21 17:55:13,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013024048] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:55:13,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:55:13,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-21 17:55:13,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592920450] [2023-12-21 17:55:13,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:55:13,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 17:55:13,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:55:13,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 17:55:13,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2023-12-21 17:55:13,127 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:15,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:55:15,960 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2023-12-21 17:55:15,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 17:55:15,961 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-21 17:55:15,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:55:15,961 INFO L225 Difference]: With dead ends: 64 [2023-12-21 17:55:15,961 INFO L226 Difference]: Without dead ends: 62 [2023-12-21 17:55:15,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=613, Invalid=3047, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 17:55:15,963 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 160 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:55:15,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 129 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 17:55:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-21 17:55:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2023-12-21 17:55:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2023-12-21 17:55:15,973 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 23 [2023-12-21 17:55:15,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:55:15,973 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2023-12-21 17:55:15,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2023-12-21 17:55:15,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 17:55:15,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:55:15,974 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:55:15,979 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 17:55:16,177 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 17:55:16,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:55:16,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:55:16,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1686716615, now seen corresponding path program 6 times [2023-12-21 17:55:16,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:55:16,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700119635] [2023-12-21 17:55:16,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:55:16,178 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 17:55:16,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:55:16,180 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 17:55:16,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 17:55:16,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 17:55:16,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:55:16,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 17:55:16,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:55:16,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:55:16,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-12-21 17:55:18,739 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:55:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:55:18,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:55:18,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 46 [2023-12-21 17:55:18,783 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:55:18,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:55:18,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 17:55:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 17:55:18,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:55:20,480 INFO L349 Elim1Store]: treesize reduction 10, result has 77.8 percent of original size [2023-12-21 17:55:20,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 63 [2023-12-21 17:55:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 17:55:22,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:55:22,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700119635] [2023-12-21 17:55:22,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700119635] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:55:22,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:55:22,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2023-12-21 17:55:22,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011604297] [2023-12-21 17:55:22,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:55:22,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 17:55:22,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:55:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 17:55:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2023-12-21 17:55:22,246 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:55:33,430 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2023-12-21 17:55:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 17:55:33,430 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-21 17:55:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:55:33,431 INFO L225 Difference]: With dead ends: 57 [2023-12-21 17:55:33,431 INFO L226 Difference]: Without dead ends: 55 [2023-12-21 17:55:33,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=372, Invalid=1268, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 17:55:33,432 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 130 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:55:33,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 40 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 17:55:33,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-21 17:55:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2023-12-21 17:55:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2023-12-21 17:55:33,441 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 25 [2023-12-21 17:55:33,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:55:33,441 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2023-12-21 17:55:33,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:55:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2023-12-21 17:55:33,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 17:55:33,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:55:33,441 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:55:33,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 17:55:33,644 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 17:55:33,644 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:55:33,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:55:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1131622593, now seen corresponding path program 7 times [2023-12-21 17:55:33,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:55:33,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131669339] [2023-12-21 17:55:33,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:55:33,645 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 17:55:33,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:55:33,646 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 17:55:33,646 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 17:55:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:55:33,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 17:55:33,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:55:33,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:55:33,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 17:55:34,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:55:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:55:34,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2023-12-21 17:55:34,111 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-21 17:55:36,883 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:55:36,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:55:36,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 17:55:36,930 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:55:36,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:55:36,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 17:55:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:55:37,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:55:39,932 INFO L349 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2023-12-21 17:55:39,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 61 [2023-12-21 17:55:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 17:55:41,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:55:41,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131669339] [2023-12-21 17:55:41,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131669339] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:55:41,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:55:41,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 29 [2023-12-21 17:55:41,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138638231] [2023-12-21 17:55:41,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:55:41,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 17:55:41,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:55:41,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 17:55:41,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2023-12-21 17:55:41,466 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:00,263 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2023-12-21 17:56:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 17:56:00,266 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-21 17:56:00,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:00,267 INFO L225 Difference]: With dead ends: 70 [2023-12-21 17:56:00,267 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 17:56:00,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=632, Invalid=3528, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 17:56:00,268 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 160 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:00,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 140 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 17:56:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 17:56:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2023-12-21 17:56:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2023-12-21 17:56:00,287 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 26 [2023-12-21 17:56:00,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:00,287 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2023-12-21 17:56:00,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2023-12-21 17:56:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 17:56:00,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:00,288 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:00,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 17:56:00,491 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 17:56:00,492 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:00,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1229618210, now seen corresponding path program 8 times [2023-12-21 17:56:00,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:00,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594040381] [2023-12-21 17:56:00,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:56:00,493 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 17:56:00,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:00,493 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 17:56:00,497 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 17:56:00,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:56:00,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:56:00,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 17:56:00,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:00,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:56:00,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 17:56:01,434 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:56:01,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:56:01,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 17:56:01,443 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:56:01,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:56:01,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 17:56:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:56:01,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:56:02,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:56:02,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2023-12-21 17:56:02,104 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 28 treesize of output 26 [2023-12-21 17:56:02,113 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 170 treesize of output 162 [2023-12-21 17:56:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:56:03,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:03,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594040381] [2023-12-21 17:56:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594040381] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:56:03,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:56:03,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-21 17:56:03,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635663195] [2023-12-21 17:56:03,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:56:03,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 17:56:03,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 17:56:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1221, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 17:56:03,210 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:09,063 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2023-12-21 17:56:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-21 17:56:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-21 17:56:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:09,064 INFO L225 Difference]: With dead ends: 115 [2023-12-21 17:56:09,064 INFO L226 Difference]: Without dead ends: 94 [2023-12-21 17:56:09,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1139, Invalid=5503, Unknown=0, NotChecked=0, Total=6642 [2023-12-21 17:56:09,065 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 233 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:09,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 221 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 17:56:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-21 17:56:09,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 61. [2023-12-21 17:56:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2023-12-21 17:56:09,080 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 29 [2023-12-21 17:56:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:09,080 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2023-12-21 17:56:09,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2023-12-21 17:56:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 17:56:09,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:09,081 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:09,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 17:56:09,283 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 17:56:09,283 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:09,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash 660503650, now seen corresponding path program 9 times [2023-12-21 17:56:09,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:09,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521012778] [2023-12-21 17:56:09,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:56:09,284 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 17:56:09,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:09,286 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:56:09,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 17:56:09,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 17:56:09,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:56:09,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 17:56:09,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:09,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:56:09,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 17:56:12,497 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:56:12,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:56:12,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 17:56:12,541 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:56:12,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:56:12,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 17:56:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 17:56:12,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:56:14,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:56:14,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2023-12-21 17:56:14,126 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 28 treesize of output 26 [2023-12-21 17:56:14,163 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 170 treesize of output 162 [2023-12-21 17:56:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 17:56:16,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:16,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521012778] [2023-12-21 17:56:16,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521012778] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:56:16,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:56:16,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 17:56:16,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618836411] [2023-12-21 17:56:16,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:56:16,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 17:56:16,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:16,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 17:56:16,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2023-12-21 17:56:16,964 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:34,136 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2023-12-21 17:56:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 17:56:34,143 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-21 17:56:34,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:34,144 INFO L225 Difference]: With dead ends: 88 [2023-12-21 17:56:34,144 INFO L226 Difference]: Without dead ends: 86 [2023-12-21 17:56:34,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=560, Invalid=2520, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 17:56:34,145 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 168 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:34,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 97 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 17:56:34,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-21 17:56:34,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 59. [2023-12-21 17:56:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2023-12-21 17:56:34,162 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 31 [2023-12-21 17:56:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:34,162 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2023-12-21 17:56:34,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2023-12-21 17:56:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 17:56:34,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:34,163 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:34,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 17:56:34,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:56:34,364 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:34,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash -214738106, now seen corresponding path program 10 times [2023-12-21 17:56:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:34,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723351891] [2023-12-21 17:56:34,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:56:34,365 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 17:56:34,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:34,366 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:56:34,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 17:56:34,523 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:56:34,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:56:34,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 17:56:34,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:56:34,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 17:56:34,927 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-21 17:56:34,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:56:34,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:56:34,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2023-12-21 17:56:35,625 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:56:35,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:56:35,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 17:56:35,633 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:56:35,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:56:35,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 17:56:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:56:35,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:56:36,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:56:36,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 66 [2023-12-21 17:56:36,447 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 50 treesize of output 48 [2023-12-21 17:56:36,456 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 2550 treesize of output 2518 [2023-12-21 17:56:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:56:37,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:37,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723351891] [2023-12-21 17:56:37,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723351891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:56:37,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:56:37,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2023-12-21 17:56:37,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598150700] [2023-12-21 17:56:37,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:56:37,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 17:56:37,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:37,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 17:56:37,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1433, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 17:56:37,805 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:44,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:44,808 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2023-12-21 17:56:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 17:56:44,809 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 17:56:44,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:44,810 INFO L225 Difference]: With dead ends: 81 [2023-12-21 17:56:44,810 INFO L226 Difference]: Without dead ends: 79 [2023-12-21 17:56:44,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1617 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1047, Invalid=6093, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 17:56:44,812 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 197 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:44,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 219 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-21 17:56:44,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-21 17:56:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2023-12-21 17:56:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2023-12-21 17:56:44,829 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 32 [2023-12-21 17:56:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:44,829 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2023-12-21 17:56:44,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2023-12-21 17:56:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 17:56:44,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:44,830 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:44,834 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 (16)] Ended with exit code 0 [2023-12-21 17:56:45,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:56:45,030 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:45,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1051763001, now seen corresponding path program 11 times [2023-12-21 17:56:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:45,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873640906] [2023-12-21 17:56:45,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:56:45,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:56:45,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:45,032 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:56:45,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 17:56:45,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 17:56:45,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:56:45,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 17:56:45,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 17:56:45,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:56:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 17:56:54,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:54,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873640906] [2023-12-21 17:56:54,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873640906] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:56:54,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:56:54,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-21 17:56:54,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610584526] [2023-12-21 17:56:54,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:56:54,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 17:56:54,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 17:56:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2023-12-21 17:56:54,978 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:57:02,761 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2023-12-21 17:57:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 17:57:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-21 17:57:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:57:02,763 INFO L225 Difference]: With dead ends: 123 [2023-12-21 17:57:02,763 INFO L226 Difference]: Without dead ends: 103 [2023-12-21 17:57:02,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=727, Invalid=2813, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 17:57:02,765 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 190 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:57:02,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 370 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 17:57:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-21 17:57:02,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2023-12-21 17:57:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 89 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2023-12-21 17:57:02,793 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 33 [2023-12-21 17:57:02,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:57:02,793 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2023-12-21 17:57:02,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2023-12-21 17:57:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 17:57:02,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:57:02,794 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:57:02,800 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 (17)] Ended with exit code 0 [2023-12-21 17:57:02,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:57:02,998 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:57:02,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:57:02,998 INFO L85 PathProgramCache]: Analyzing trace with hash 379159620, now seen corresponding path program 12 times [2023-12-21 17:57:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:57:02,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108017884] [2023-12-21 17:57:02,999 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:57:02,999 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 17:57:02,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:57:03,000 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:57:03,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 17:57:03,222 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-21 17:57:03,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:57:03,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 17:57:03,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:57:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 17:57:03,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:57:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 17:57:10,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:57:10,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108017884] [2023-12-21 17:57:10,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108017884] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:57:10,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:57:10,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-21 17:57:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895634111] [2023-12-21 17:57:10,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:57:10,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 17:57:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:57:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 17:57:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2023-12-21 17:57:10,869 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 29 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:17,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:57:17,804 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2023-12-21 17:57:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 17:57:17,805 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 17:57:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:57:17,805 INFO L225 Difference]: With dead ends: 135 [2023-12-21 17:57:17,806 INFO L226 Difference]: Without dead ends: 118 [2023-12-21 17:57:17,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=537, Invalid=2115, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 17:57:17,807 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 197 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:57:17,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 266 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-21 17:57:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-21 17:57:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2023-12-21 17:57:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0888888888888888) internal successors, (98), 90 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2023-12-21 17:57:17,835 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 35 [2023-12-21 17:57:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:57:17,835 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2023-12-21 17:57:17,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2023-12-21 17:57:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 17:57:17,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:57:17,836 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:57:17,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-21 17:57:18,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:57:18,039 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:57:18,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:57:18,039 INFO L85 PathProgramCache]: Analyzing trace with hash 787605159, now seen corresponding path program 13 times [2023-12-21 17:57:18,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:57:18,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215763671] [2023-12-21 17:57:18,040 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:57:18,040 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 17:57:18,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:57:18,041 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:57:18,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-21 17:57:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:57:18,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 17:57:18,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:57:18,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:57:18,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 17:57:19,307 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:57:19,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:57:19,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 17:57:19,314 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:57:19,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:57:19,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 17:57:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:57:19,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:57:20,154 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:57:20,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2023-12-21 17:57:20,163 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 28 treesize of output 26 [2023-12-21 17:57:20,170 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 68 treesize of output 64 [2023-12-21 17:57:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:57:22,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:57:22,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215763671] [2023-12-21 17:57:22,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215763671] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:57:22,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:57:22,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 17:57:22,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082636242] [2023-12-21 17:57:22,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:57:22,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 17:57:22,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:57:22,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 17:57:22,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1900, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 17:57:22,067 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 47 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 47 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:26,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 17:57:31,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 17:57:34,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 17:57:36,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 17:57:41,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 17:57:45,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 17:57:54,973 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 43 DAG size of output: 41 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:58:05,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:58:05,481 INFO L93 Difference]: Finished difference Result 181 states and 190 transitions. [2023-12-21 17:58:05,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-21 17:58:05,482 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 47 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 17:58:05,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:58:05,482 INFO L225 Difference]: With dead ends: 181 [2023-12-21 17:58:05,482 INFO L226 Difference]: Without dead ends: 179 [2023-12-21 17:58:05,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6050 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=3019, Invalid=17287, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 17:58:05,486 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 518 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 162 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:58:05,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 605 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1478 Invalid, 3 Unknown, 0 Unchecked, 22.5s Time] [2023-12-21 17:58:05,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-21 17:58:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 104. [2023-12-21 17:58:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.087378640776699) internal successors, (112), 103 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:05,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2023-12-21 17:58:05,522 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 35 [2023-12-21 17:58:05,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:58:05,522 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2023-12-21 17:58:05,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 47 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:05,522 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2023-12-21 17:58:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 17:58:05,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:58:05,522 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:58:05,527 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 (19)] Ended with exit code 0 [2023-12-21 17:58:05,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:05,728 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:58:05,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:58:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2051376734, now seen corresponding path program 14 times [2023-12-21 17:58:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:58:05,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086348537] [2023-12-21 17:58:05,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:58:05,728 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 17:58:05,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:58:05,729 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:58:05,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 17:58:05,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:58:05,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:58:05,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 17:58:05,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:58:06,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:58:06,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 17:58:06,242 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-21 17:58:06,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:58:06,261 INFO L349 Elim1Store]: treesize reduction 23, result has 42.5 percent of original size [2023-12-21 17:58:06,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2023-12-21 17:58:06,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:58:06,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:58:06,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 29 [2023-12-21 17:58:07,114 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:58:07,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:58:07,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 45 [2023-12-21 17:58:07,135 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:58:07,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:58:07,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2023-12-21 17:58:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:58:07,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:58:08,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:58:08,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 88 [2023-12-21 17:58:08,458 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 72 treesize of output 70 [2023-12-21 17:58:08,473 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 177168 treesize of output 176656 [2023-12-21 17:58:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:58:09,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:58:09,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086348537] [2023-12-21 17:58:09,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086348537] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:58:09,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:58:09,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 42 [2023-12-21 17:58:09,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934947601] [2023-12-21 17:58:09,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:58:09,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 17:58:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:58:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 17:58:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1411, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 17:58:09,862 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 42 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 42 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:16,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:58:16,566 INFO L93 Difference]: Finished difference Result 132 states and 139 transitions. [2023-12-21 17:58:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 17:58:16,566 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 42 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 17:58:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:58:16,567 INFO L225 Difference]: With dead ends: 132 [2023-12-21 17:58:16,567 INFO L226 Difference]: Without dead ends: 105 [2023-12-21 17:58:16,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1191, Invalid=5289, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 17:58:16,568 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 165 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:58:16,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 124 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 17:58:16,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-21 17:58:16,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 82. [2023-12-21 17:58:16,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 81 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:16,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2023-12-21 17:58:16,598 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 35 [2023-12-21 17:58:16,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:58:16,598 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2023-12-21 17:58:16,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 42 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:16,598 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2023-12-21 17:58:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 17:58:16,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:58:16,598 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:58:16,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 17:58:16,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:16,799 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:58:16,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:58:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1737799399, now seen corresponding path program 15 times [2023-12-21 17:58:16,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:58:16,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548321295] [2023-12-21 17:58:16,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:58:16,799 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 17:58:16,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:58:16,800 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:58:16,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-21 17:58:17,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-21 17:58:17,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:58:17,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 17:58:17,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:58:17,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:58:17,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-12-21 17:58:20,719 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:58:20,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:58:20,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 46 [2023-12-21 17:58:20,769 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:58:20,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:58:20,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 17:58:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 17:58:20,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:58:23,962 INFO L349 Elim1Store]: treesize reduction 10, result has 77.8 percent of original size [2023-12-21 17:58:23,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 63 [2023-12-21 17:58:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 17:58:27,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:58:27,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548321295] [2023-12-21 17:58:27,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548321295] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:58:27,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:58:27,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2023-12-21 17:58:27,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140916502] [2023-12-21 17:58:27,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:58:27,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 17:58:27,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:58:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 17:58:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2023-12-21 17:58:27,844 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:39,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 17:58:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:58:54,908 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2023-12-21 17:58:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 17:58:54,916 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 17:58:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:58:54,916 INFO L225 Difference]: With dead ends: 110 [2023-12-21 17:58:54,916 INFO L226 Difference]: Without dead ends: 108 [2023-12-21 17:58:54,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=616, Invalid=2806, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 17:58:54,918 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 152 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:58:54,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 86 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-21 17:58:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-21 17:58:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 72. [2023-12-21 17:58:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0845070422535212) internal successors, (77), 71 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2023-12-21 17:58:54,947 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 37 [2023-12-21 17:58:54,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:58:54,948 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2023-12-21 17:58:54,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:58:54,948 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2023-12-21 17:58:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 17:58:54,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:58:54,948 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:58:54,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-21 17:58:55,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:58:55,151 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:58:55,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:58:55,151 INFO L85 PathProgramCache]: Analyzing trace with hash 144189089, now seen corresponding path program 16 times [2023-12-21 17:58:55,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:58:55,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559475914] [2023-12-21 17:58:55,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:58:55,152 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 17:58:55,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:58:55,153 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:58:55,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 17:58:55,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:58:55,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:58:55,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 17:58:55,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:58:55,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:58:55,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 17:58:55,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:58:55,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 17:58:55,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2023-12-21 17:59:01,921 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:59:01,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:59:01,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 17:59:01,978 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 17:59:02,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 17:59:02,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 17:59:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:59:02,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:59:06,973 INFO L349 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2023-12-21 17:59:06,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 61 [2023-12-21 17:59:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 17:59:11,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:59:11,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559475914] [2023-12-21 17:59:11,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559475914] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:59:11,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:59:11,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16] total 41 [2023-12-21 17:59:11,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044526455] [2023-12-21 17:59:11,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:59:11,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 17:59:11,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:59:11,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 17:59:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 17:59:11,854 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 41 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 41 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:00:01,641 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2023-12-21 18:00:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-21 18:00:01,645 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 41 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 18:00:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:00:01,645 INFO L225 Difference]: With dead ends: 103 [2023-12-21 18:00:01,645 INFO L226 Difference]: Without dead ends: 101 [2023-12-21 18:00:01,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2298 ImplicationChecksByTransitivity, 55.6s TimeCoverageRelationStatistics Valid=1111, Invalid=8395, Unknown=0, NotChecked=0, Total=9506 [2023-12-21 18:00:01,647 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 282 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-21 18:00:01,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 326 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-21 18:00:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-21 18:00:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77. [2023-12-21 18:00:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 76 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2023-12-21 18:00:01,691 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 38 [2023-12-21 18:00:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:00:01,691 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2023-12-21 18:00:01,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 41 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:01,691 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2023-12-21 18:00:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 18:00:01,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:00:01,692 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:00:01,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 18:00:01,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:00:01,897 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:00:01,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:00:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1781196612, now seen corresponding path program 17 times [2023-12-21 18:00:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:00:01,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235800704] [2023-12-21 18:00:01,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:00:01,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:00:01,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:00:01,899 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:00:01,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 18:00:02,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-21 18:00:02,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:00:02,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 18:00:02,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:00:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 18:00:02,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:00:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 18:00:02,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:00:02,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235800704] [2023-12-21 18:00:02,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235800704] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:00:02,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:00:02,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 18:00:02,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963554155] [2023-12-21 18:00:02,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:00:02,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 18:00:02,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:00:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 18:00:02,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-12-21 18:00:02,959 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:17,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:00:17,017 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2023-12-21 18:00:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 18:00:17,020 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-21 18:00:17,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:00:17,023 INFO L225 Difference]: With dead ends: 182 [2023-12-21 18:00:17,023 INFO L226 Difference]: Without dead ends: 148 [2023-12-21 18:00:17,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=921, Invalid=4191, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 18:00:17,024 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 375 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-21 18:00:17,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 171 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-21 18:00:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-21 18:00:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 88. [2023-12-21 18:00:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1264367816091954) internal successors, (98), 87 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:17,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2023-12-21 18:00:17,072 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 40 [2023-12-21 18:00:17,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:00:17,072 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2023-12-21 18:00:17,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2023-12-21 18:00:17,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 18:00:17,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:00:17,073 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:00:17,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-21 18:00:17,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:00:17,273 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:00:17,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:00:17,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1812360702, now seen corresponding path program 18 times [2023-12-21 18:00:17,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:00:17,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133917338] [2023-12-21 18:00:17,274 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 18:00:17,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:00:17,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:00:17,275 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:00:17,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-21 18:00:17,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-21 18:00:17,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:00:17,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 18:00:17,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:00:18,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:00:18,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 18:00:19,219 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:00:19,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:00:19,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 18:00:19,228 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:00:19,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:00:19,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 18:00:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:00:19,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:00:20,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:00:20,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2023-12-21 18:00:20,897 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 28 treesize of output 26 [2023-12-21 18:00:20,909 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 170 treesize of output 162 [2023-12-21 18:00:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:00:24,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:00:24,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133917338] [2023-12-21 18:00:24,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133917338] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:00:24,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:00:24,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29] total 55 [2023-12-21 18:00:24,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454199339] [2023-12-21 18:00:24,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:00:24,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 18:00:24,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:00:24,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 18:00:24,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=484, Invalid=2486, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 18:00:24,798 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 55 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 55 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:00:53,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 18:01:03,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 18:01:13,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:01:13,144 INFO L93 Difference]: Finished difference Result 288 states and 309 transitions. [2023-12-21 18:01:13,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-21 18:01:13,145 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 55 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 18:01:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:01:13,146 INFO L225 Difference]: With dead ends: 288 [2023-12-21 18:01:13,146 INFO L226 Difference]: Without dead ends: 261 [2023-12-21 18:01:13,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9825 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=5185, Invalid=26677, Unknown=0, NotChecked=0, Total=31862 [2023-12-21 18:01:13,148 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 757 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 365 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:01:13,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 780 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1805 Invalid, 2 Unknown, 0 Unchecked, 19.5s Time] [2023-12-21 18:01:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-21 18:01:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 131. [2023-12-21 18:01:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.123076923076923) internal successors, (146), 130 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:01:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 146 transitions. [2023-12-21 18:01:13,229 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 146 transitions. Word has length 41 [2023-12-21 18:01:13,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:01:13,229 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 146 transitions. [2023-12-21 18:01:13,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 55 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:01:13,229 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 146 transitions. [2023-12-21 18:01:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 18:01:13,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:01:13,230 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:01:13,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-21 18:01:13,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:01:13,431 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:01:13,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:01:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash 575089767, now seen corresponding path program 19 times [2023-12-21 18:01:13,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:01:13,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493128320] [2023-12-21 18:01:13,432 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 18:01:13,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:01:13,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:01:13,433 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:01:13,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-21 18:01:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:01:13,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 18:01:13,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:01:14,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:01:14,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 18:01:14,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:01:14,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:01:14,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2023-12-21 18:01:14,255 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-21 18:01:14,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:01:14,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:01:14,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2023-12-21 18:01:15,214 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:01:15,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:01:15,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 18:01:15,221 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:01:15,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:01:15,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 18:01:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:01:15,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:01:16,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:01:16,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 88 [2023-12-21 18:01:16,627 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 72 treesize of output 70 [2023-12-21 18:01:16,655 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 3923954 treesize of output 3915762 [2023-12-21 18:01:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:01:20,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:01:20,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493128320] [2023-12-21 18:01:20,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493128320] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:01:20,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:01:20,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-12-21 18:01:20,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603779288] [2023-12-21 18:01:20,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:01:20,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-21 18:01:20,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:01:20,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-21 18:01:20,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2266, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 18:01:20,034 INFO L87 Difference]: Start difference. First operand 131 states and 146 transitions. Second operand has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 51 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:01:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:01:33,306 INFO L93 Difference]: Finished difference Result 178 states and 195 transitions. [2023-12-21 18:01:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-21 18:01:33,306 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 51 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 18:01:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:01:33,307 INFO L225 Difference]: With dead ends: 178 [2023-12-21 18:01:33,307 INFO L226 Difference]: Without dead ends: 176 [2023-12-21 18:01:33,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2781 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1553, Invalid=10003, Unknown=0, NotChecked=0, Total=11556 [2023-12-21 18:01:33,308 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 255 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-21 18:01:33,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 339 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-21 18:01:33,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-21 18:01:33,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 134. [2023-12-21 18:01:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.1203007518796992) internal successors, (149), 133 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:01:33,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2023-12-21 18:01:33,389 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 41 [2023-12-21 18:01:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:01:33,389 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2023-12-21 18:01:33,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 51 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:01:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2023-12-21 18:01:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 18:01:33,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:01:33,389 INFO L195 NwaCegarLoop]: trace histogram [12, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:01:33,395 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 (25)] Ended with exit code 0 [2023-12-21 18:01:33,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:01:33,590 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:01:33,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:01:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1798360510, now seen corresponding path program 20 times [2023-12-21 18:01:33,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:01:33,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295586177] [2023-12-21 18:01:33,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:01:33,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:01:33,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:01:33,592 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:01:33,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-21 18:01:33,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:01:33,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:01:33,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 18:01:33,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:01:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-21 18:01:34,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:02:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-21 18:02:00,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:02:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295586177] [2023-12-21 18:02:00,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295586177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:02:00,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:02:00,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2023-12-21 18:02:00,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708769861] [2023-12-21 18:02:00,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:02:00,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 18:02:00,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:02:00,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 18:02:00,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1541, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 18:02:00,054 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 45 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:33,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:02:33,022 INFO L93 Difference]: Finished difference Result 251 states and 267 transitions. [2023-12-21 18:02:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-21 18:02:33,023 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 18:02:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:02:33,024 INFO L225 Difference]: With dead ends: 251 [2023-12-21 18:02:33,024 INFO L226 Difference]: Without dead ends: 224 [2023-12-21 18:02:33,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 47.3s TimeCoverageRelationStatistics Valid=1678, Invalid=7442, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 18:02:33,025 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1195 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-21 18:02:33,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 696 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-21 18:02:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-21 18:02:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 159. [2023-12-21 18:02:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.1012658227848102) internal successors, (174), 158 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:33,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 174 transitions. [2023-12-21 18:02:33,126 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 174 transitions. Word has length 43 [2023-12-21 18:02:33,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:02:33,127 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 174 transitions. [2023-12-21 18:02:33,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:33,127 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 174 transitions. [2023-12-21 18:02:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 18:02:33,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:02:33,127 INFO L195 NwaCegarLoop]: trace histogram [12, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:02:33,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-21 18:02:33,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:33,333 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:02:33,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:02:33,333 INFO L85 PathProgramCache]: Analyzing trace with hash 6507073, now seen corresponding path program 21 times [2023-12-21 18:02:33,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:02:33,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320283342] [2023-12-21 18:02:33,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:02:33,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:33,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:02:33,334 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:02:33,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-21 18:02:33,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 18:02:33,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:02:33,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 18:02:33,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:02:33,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:02:33,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2023-12-21 18:02:33,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 18:02:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 18:02:34,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:02:34,568 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 42 treesize of output 40 [2023-12-21 18:02:34,571 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 250 treesize of output 242 [2023-12-21 18:02:34,585 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-12-21 18:02:34,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 79 [2023-12-21 18:02:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 18:02:34,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:02:34,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320283342] [2023-12-21 18:02:34,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320283342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:02:34,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:02:34,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2023-12-21 18:02:34,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852392483] [2023-12-21 18:02:34,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:02:34,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 18:02:34,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:02:34,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 18:02:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2023-12-21 18:02:34,781 INFO L87 Difference]: Start difference. First operand 159 states and 174 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:02:37,018 INFO L93 Difference]: Finished difference Result 197 states and 215 transitions. [2023-12-21 18:02:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 18:02:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-21 18:02:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:02:37,019 INFO L225 Difference]: With dead ends: 197 [2023-12-21 18:02:37,019 INFO L226 Difference]: Without dead ends: 195 [2023-12-21 18:02:37,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=242, Invalid=1738, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 18:02:37,020 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 18:02:37,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 325 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 18:02:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-21 18:02:37,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 158. [2023-12-21 18:02:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.0955414012738853) internal successors, (172), 157 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 172 transitions. [2023-12-21 18:02:37,133 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 172 transitions. Word has length 44 [2023-12-21 18:02:37,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:02:37,133 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 172 transitions. [2023-12-21 18:02:37,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 172 transitions. [2023-12-21 18:02:37,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 18:02:37,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:02:37,134 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:02:37,142 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 (27)] Forceful destruction successful, exit code 0 [2023-12-21 18:02:37,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:37,335 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:02:37,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:02:37,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1440102, now seen corresponding path program 22 times [2023-12-21 18:02:37,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:02:37,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927632253] [2023-12-21 18:02:37,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:02:37,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:37,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:02:37,336 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:02:37,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-21 18:02:37,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:02:37,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:02:37,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 18:02:37,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:02:38,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:02:38,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 18:02:38,376 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-21 18:02:38,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:02:38,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:02:38,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2023-12-21 18:02:39,494 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:02:39,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:02:39,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 18:02:39,501 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:02:39,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:02:39,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 18:02:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:02:39,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:02:40,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:02:40,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 66 [2023-12-21 18:02:40,902 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 50 treesize of output 48 [2023-12-21 18:02:40,912 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 690 treesize of output 682 [2023-12-21 18:02:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:02:43,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:02:43,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927632253] [2023-12-21 18:02:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927632253] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:02:43,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:02:43,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-12-21 18:02:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241813109] [2023-12-21 18:02:43,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:02:43,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 18:02:43,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:02:43,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 18:02:43,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=2851, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 18:02:43,735 INFO L87 Difference]: Start difference. First operand 158 states and 172 transitions. Second operand has 57 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 57 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:01,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:03:01,963 INFO L93 Difference]: Finished difference Result 212 states and 227 transitions. [2023-12-21 18:03:01,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-21 18:03:01,963 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 57 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-21 18:03:01,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:03:01,964 INFO L225 Difference]: With dead ends: 212 [2023-12-21 18:03:01,964 INFO L226 Difference]: Without dead ends: 210 [2023-12-21 18:03:01,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5786 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=2619, Invalid=18843, Unknown=0, NotChecked=0, Total=21462 [2023-12-21 18:03:01,966 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 493 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:03:01,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 722 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-21 18:03:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-21 18:03:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 161. [2023-12-21 18:03:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.09375) internal successors, (175), 160 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 175 transitions. [2023-12-21 18:03:02,078 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 175 transitions. Word has length 44 [2023-12-21 18:03:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:03:02,078 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 175 transitions. [2023-12-21 18:03:02,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 57 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:02,079 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 175 transitions. [2023-12-21 18:03:02,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 18:03:02,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:03:02,079 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:03:02,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-21 18:03:02,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:02,284 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:03:02,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:03:02,284 INFO L85 PathProgramCache]: Analyzing trace with hash -120059679, now seen corresponding path program 23 times [2023-12-21 18:03:02,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:03:02,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234329635] [2023-12-21 18:03:02,284 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:03:02,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:02,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:03:02,285 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:03:02,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-21 18:03:02,563 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-21 18:03:02,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:03:02,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 18:03:02,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:03:02,788 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 1 [2023-12-21 18:03:02,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:03:02,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 18:03:03,035 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-21 18:03:03,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:03:03,055 INFO L349 Elim1Store]: treesize reduction 23, result has 42.5 percent of original size [2023-12-21 18:03:03,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2023-12-21 18:03:03,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:03:03,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:03:03,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 29 [2023-12-21 18:03:03,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:03:03,250 INFO L349 Elim1Store]: treesize reduction 23, result has 42.5 percent of original size [2023-12-21 18:03:03,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 35 [2023-12-21 18:03:04,813 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:03:04,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:03:04,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 18:03:04,822 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:03:04,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:03:04,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 18:03:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:03:04,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:03:08,116 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 113 treesize of output 111 [2023-12-21 18:03:08,817 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 111735110804 treesize of output 111668001940 [2023-12-21 18:03:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:03:25,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:03:25,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234329635] [2023-12-21 18:03:25,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234329635] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:03:25,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:03:25,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-12-21 18:03:25,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649197209] [2023-12-21 18:03:25,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:03:25,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 18:03:25,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:03:25,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 18:03:25,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=2693, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 18:03:25,220 INFO L87 Difference]: Start difference. First operand 161 states and 175 transitions. Second operand has 57 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 57 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:03:44,359 INFO L93 Difference]: Finished difference Result 183 states and 197 transitions. [2023-12-21 18:03:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 18:03:44,360 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 57 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-21 18:03:44,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:03:44,363 INFO L225 Difference]: With dead ends: 183 [2023-12-21 18:03:44,363 INFO L226 Difference]: Without dead ends: 149 [2023-12-21 18:03:44,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3121 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=1964, Invalid=10026, Unknown=0, NotChecked=0, Total=11990 [2023-12-21 18:03:44,365 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 235 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-21 18:03:44,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 216 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-21 18:03:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-21 18:03:44,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 132. [2023-12-21 18:03:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.1068702290076335) internal successors, (145), 131 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 145 transitions. [2023-12-21 18:03:44,459 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 145 transitions. Word has length 44 [2023-12-21 18:03:44,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:03:44,460 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 145 transitions. [2023-12-21 18:03:44,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 57 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 145 transitions. [2023-12-21 18:03:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 18:03:44,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:03:44,460 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:03:44,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-21 18:03:44,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:44,661 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:03:44,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:03:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1516839641, now seen corresponding path program 24 times [2023-12-21 18:03:44,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:03:44,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184350424] [2023-12-21 18:03:44,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 18:03:44,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:44,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:03:44,663 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:03:44,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-21 18:03:45,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-21 18:03:45,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:03:45,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 18:03:45,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:03:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 18:03:45,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:04:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 54 proven. 46 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 18:04:05,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:04:05,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184350424] [2023-12-21 18:04:05,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184350424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:04:05,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:04:05,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-12-21 18:04:05,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511734904] [2023-12-21 18:04:05,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:04:05,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 18:04:05,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:04:05,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 18:04:05,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 18:04:05,478 INFO L87 Difference]: Start difference. First operand 132 states and 145 transitions. Second operand has 35 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:19,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:04:19,455 INFO L93 Difference]: Finished difference Result 184 states and 202 transitions. [2023-12-21 18:04:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 18:04:19,477 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 18:04:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:04:19,478 INFO L225 Difference]: With dead ends: 184 [2023-12-21 18:04:19,478 INFO L226 Difference]: Without dead ends: 161 [2023-12-21 18:04:19,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=704, Invalid=2956, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 18:04:19,480 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 241 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-21 18:04:19,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 214 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-21 18:04:19,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-21 18:04:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 132. [2023-12-21 18:04:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.099236641221374) internal successors, (144), 131 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:19,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 144 transitions. [2023-12-21 18:04:19,609 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 144 transitions. Word has length 47 [2023-12-21 18:04:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:04:19,609 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 144 transitions. [2023-12-21 18:04:19,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 144 transitions. [2023-12-21 18:04:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 18:04:19,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:04:19,610 INFO L195 NwaCegarLoop]: trace histogram [12, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:04:19,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-21 18:04:19,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:04:19,819 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:04:19,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:04:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash 583918791, now seen corresponding path program 25 times [2023-12-21 18:04:19,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:04:19,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690924934] [2023-12-21 18:04:19,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 18:04:19,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:04:19,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:04:19,837 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:04:19,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-21 18:04:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:04:20,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 18:04:20,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:04:21,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:04:21,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 18:04:32,612 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:04:32,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:04:32,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 18:04:32,717 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:04:32,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:04:32,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 18:04:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:04:33,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:04:38,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:04:38,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2023-12-21 18:04:38,413 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 28 treesize of output 26 [2023-12-21 18:04:38,469 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 68 treesize of output 64 [2023-12-21 18:04:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 18:04:55,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:04:55,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690924934] [2023-12-21 18:04:55,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690924934] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:04:55,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:04:55,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 19] total 51 [2023-12-21 18:04:55,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862948586] [2023-12-21 18:04:55,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:04:55,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-21 18:04:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:04:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-21 18:04:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2340, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 18:04:55,881 INFO L87 Difference]: Start difference. First operand 132 states and 144 transitions. Second operand has 51 states, 51 states have (on average 1.607843137254902) internal successors, (82), 51 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:07:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:07:21,657 INFO L93 Difference]: Finished difference Result 188 states and 195 transitions. [2023-12-21 18:07:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 18:07:21,664 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.607843137254902) internal successors, (82), 51 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 18:07:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:07:21,665 INFO L225 Difference]: With dead ends: 188 [2023-12-21 18:07:21,665 INFO L226 Difference]: Without dead ends: 186 [2023-12-21 18:07:21,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 156.7s TimeCoverageRelationStatistics Valid=2093, Invalid=18499, Unknown=0, NotChecked=0, Total=20592 [2023-12-21 18:07:21,667 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 444 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:07:21,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1229 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2023-12-21 18:07:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-21 18:07:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 137. [2023-12-21 18:07:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0955882352941178) internal successors, (149), 136 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:07:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2023-12-21 18:07:21,795 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 47 [2023-12-21 18:07:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:07:21,795 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2023-12-21 18:07:21,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.607843137254902) internal successors, (82), 51 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:07:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2023-12-21 18:07:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 18:07:21,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:07:21,796 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 7, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:07:21,806 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 (31)] Forceful destruction successful, exit code 0 [2023-12-21 18:07:21,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:07:21,996 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:07:21,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:07:21,997 INFO L85 PathProgramCache]: Analyzing trace with hash -42358910, now seen corresponding path program 26 times [2023-12-21 18:07:21,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:07:21,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265601113] [2023-12-21 18:07:21,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:07:21,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:07:21,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:07:21,998 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:07:21,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-21 18:07:22,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:07:22,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:07:22,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 18:07:22,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:07:22,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:07:22,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 18:07:23,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:07:23,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:07:23,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2023-12-21 18:07:23,110 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-21 18:07:23,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:07:23,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:07:23,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2023-12-21 18:07:24,589 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:07:24,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:07:24,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 18:07:24,601 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:07:24,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:07:24,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 18:07:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:07:24,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:07:26,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:07:26,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 88 [2023-12-21 18:07:26,999 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 72 treesize of output 70 [2023-12-21 18:07:27,012 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 40564 treesize of output 40436 [2023-12-21 18:07:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:07:31,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:07:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265601113] [2023-12-21 18:07:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265601113] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:07:31,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:07:31,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2023-12-21 18:07:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353518977] [2023-12-21 18:07:31,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:07:31,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 18:07:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:07:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 18:07:31,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=3071, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 18:07:31,167 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 59 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:07:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:07:48,968 INFO L93 Difference]: Finished difference Result 195 states and 208 transitions. [2023-12-21 18:07:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-21 18:07:48,969 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 59 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 18:07:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:07:48,970 INFO L225 Difference]: With dead ends: 195 [2023-12-21 18:07:48,970 INFO L226 Difference]: Without dead ends: 193 [2023-12-21 18:07:48,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3908 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=2055, Invalid=14201, Unknown=0, NotChecked=0, Total=16256 [2023-12-21 18:07:48,971 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 327 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-21 18:07:48,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 569 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-21 18:07:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-21 18:07:49,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140. [2023-12-21 18:07:49,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0935251798561152) internal successors, (152), 139 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:07:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2023-12-21 18:07:49,089 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 47 [2023-12-21 18:07:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:07:49,089 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2023-12-21 18:07:49,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 59 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:07:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2023-12-21 18:07:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 18:07:49,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:07:49,090 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:07:49,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-21 18:07:49,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:07:49,298 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:07:49,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:07:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash 6913286, now seen corresponding path program 27 times [2023-12-21 18:07:49,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:07:49,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91367043] [2023-12-21 18:07:49,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:07:49,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:07:49,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:07:49,300 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:07:49,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-21 18:07:49,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-21 18:07:49,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:07:49,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 18:07:49,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:07:49,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:07:49,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2023-12-21 18:07:49,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 18:07:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 18:07:50,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:07:50,930 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 42 treesize of output 40 [2023-12-21 18:07:50,932 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 250 treesize of output 242 [2023-12-21 18:07:50,946 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-12-21 18:07:50,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 79 [2023-12-21 18:07:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-21 18:07:51,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:07:51,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91367043] [2023-12-21 18:07:51,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91367043] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:07:51,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:07:51,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2023-12-21 18:07:51,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958360783] [2023-12-21 18:07:51,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:07:51,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 18:07:51,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:07:51,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 18:07:51,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 18:07:51,213 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:07:53,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:07:53,751 INFO L93 Difference]: Finished difference Result 169 states and 181 transitions. [2023-12-21 18:07:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 18:07:53,751 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 18:07:53,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:07:53,751 INFO L225 Difference]: With dead ends: 169 [2023-12-21 18:07:53,751 INFO L226 Difference]: Without dead ends: 167 [2023-12-21 18:07:53,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=278, Invalid=2272, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 18:07:53,752 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:07:53,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 387 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 18:07:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-21 18:07:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 138. [2023-12-21 18:07:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0875912408759123) internal successors, (149), 137 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:07:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2023-12-21 18:07:53,858 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 50 [2023-12-21 18:07:53,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:07:53,859 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2023-12-21 18:07:53,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:07:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2023-12-21 18:07:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 18:07:53,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:07:53,859 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:07:53,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-21 18:07:54,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:07:54,066 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:07:54,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:07:54,066 INFO L85 PathProgramCache]: Analyzing trace with hash 912389249, now seen corresponding path program 28 times [2023-12-21 18:07:54,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:07:54,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810767451] [2023-12-21 18:07:54,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:07:54,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:07:54,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:07:54,067 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:07:54,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-21 18:07:54,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:07:54,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:07:54,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 18:07:54,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:07:55,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:07:55,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-12-21 18:07:55,309 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-21 18:07:55,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:07:55,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 18:07:55,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2023-12-21 18:08:04,033 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:08:04,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:08:04,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-12-21 18:08:04,092 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 18:08:04,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:08:04,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-21 18:08:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:08:04,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:08:10,388 INFO L349 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2023-12-21 18:08:10,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 61 [2023-12-21 18:08:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 18:08:20,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:08:20,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810767451] [2023-12-21 18:08:20,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810767451] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:08:20,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:08:20,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 20] total 53 [2023-12-21 18:08:20,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483378679] [2023-12-21 18:08:20,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:08:20,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 18:08:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:08:20,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 18:08:20,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2533, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 18:08:20,016 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand has 53 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 18:09:25,000 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 (34)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:09:25,009 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:09:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-21 18:09:25,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3995 ImplicationChecksByTransitivity, 73.6s TimeCoverageRelationStatistics Valid=1542, Invalid=14208, Unknown=0, NotChecked=0, Total=15750 [2023-12-21 18:09:25,081 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 366 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:09:25,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 393 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-12-21 18:09:25,082 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 18:09:25,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-21 18:09:25,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:09:25,291 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (138states) and FLOYD_HOARE automaton (currently 76 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 126 known predicates. [2023-12-21 18:09:25,295 INFO L445 BasicCegarLoop]: Path program histogram: [28, 2, 1, 1, 1] [2023-12-21 18:09:25,296 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 18:09:25,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:09:25 BoogieIcfgContainer [2023-12-21 18:09:25,297 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 18:09:25,298 INFO L158 Benchmark]: Toolchain (without parser) took 875911.15ms. Allocated memory was 304.1MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 249.8MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 284.6MB. Max. memory is 8.0GB. [2023-12-21 18:09:25,298 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 145.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 18:09:25,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.64ms. Allocated memory is still 304.1MB. Free memory was 249.8MB in the beginning and 237.7MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 18:09:25,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.90ms. Allocated memory is still 304.1MB. Free memory was 237.7MB in the beginning and 236.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:09:25,298 INFO L158 Benchmark]: Boogie Preprocessor took 46.47ms. Allocated memory is still 304.1MB. Free memory was 236.1MB in the beginning and 233.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:09:25,298 INFO L158 Benchmark]: RCFGBuilder took 372.70ms. Allocated memory is still 304.1MB. Free memory was 233.6MB in the beginning and 217.9MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 18:09:25,298 INFO L158 Benchmark]: TraceAbstraction took 875227.29ms. Allocated memory was 304.1MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 217.3MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 252.1MB. Max. memory is 8.0GB. [2023-12-21 18:09:25,298 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 145.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.64ms. Allocated memory is still 304.1MB. Free memory was 249.8MB in the beginning and 237.7MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.90ms. Allocated memory is still 304.1MB. Free memory was 237.7MB in the beginning and 236.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.47ms. Allocated memory is still 304.1MB. Free memory was 236.1MB in the beginning and 233.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 372.70ms. Allocated memory is still 304.1MB. Free memory was 233.6MB in the beginning and 217.9MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 875227.29ms. Allocated memory was 304.1MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 217.3MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 252.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was constructing difference of abstraction (138states) and FLOYD_HOARE automaton (currently 76 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 126 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 875.2s, OverallIterations: 33, TraceHistogramMax: 14, PathProgramHistogramMax: 28, EmptinessCheckTime: 0.0s, AutomataDifference: 610.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 7869 SdHoareTripleChecker+Valid, 169.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7869 mSDsluCounter, 9065 SdHoareTripleChecker+Invalid, 161.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8501 mSDsCounter, 2715 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24722 IncrementalHoareTripleChecker+Invalid, 27443 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2715 mSolverCounterUnsat, 564 mSDtfsCounter, 24722 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3266 GetRequests, 1018 SyntacticMatches, 0 SemanticMatches, 2247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57740 ImplicationChecksByTransitivity, 622.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=27, InterpolantAutomatonStates: 1309, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 32 MinimizatonAttempts, 933 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 249.9s InterpolantComputationTime, 1056 NumberOfCodeBlocks, 1044 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 2014 ConstructedInterpolants, 232 QuantifiedInterpolants, 35319 SizeOfPredicates, 429 NumberOfNonLiveVariables, 4273 ConjunctsInSsa, 867 ConjunctsInUnsatCore, 63 InterpolantComputations, 3 PerfectInterpolantSequences, 1302/4843 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