/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/verifythis/prefixsum_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 00:10:37,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 00:10:37,178 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 00:10:37,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 00:10:37,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 00:10:37,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 00:10:37,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 00:10:37,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 00:10:37,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 00:10:37,209 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 00:10:37,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 00:10:37,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 00:10:37,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 00:10:37,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 00:10:37,211 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 00:10:37,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 00:10:37,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 00:10:37,212 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 00:10:37,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 00:10:37,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 00:10:37,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 00:10:37,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 00:10:37,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 00:10:37,213 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 00:10:37,214 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 00:10:37,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 00:10:37,214 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 00:10:37,214 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 00:10:37,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 00:10:37,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 00:10:37,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 00:10:37,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 00:10:37,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 00:10:37,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 00:10:37,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 00:10:37,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 00:10:37,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 00:10:37,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 00:10:37,216 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 00:10:37,216 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 00:10:37,216 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 00:10:37,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 00:10:37,217 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 00:10:37,217 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 00:10:37,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 00:10:37,217 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 00:10:37,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 00:10:37,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 00:10:37,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 00:10:37,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 00:10:37,428 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 00:10:37,428 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 00:10:37,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c [2023-12-25 00:10:38,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 00:10:38,587 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 00:10:38,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c [2023-12-25 00:10:38,594 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8d4a265/33bdef1ae2fe4f848ee852f7e3e1c9bf/FLAGb35c1028c [2023-12-25 00:10:38,609 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8d4a265/33bdef1ae2fe4f848ee852f7e3e1c9bf [2023-12-25 00:10:38,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 00:10:38,612 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 00:10:38,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 00:10:38,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 00:10:38,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 00:10:38,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:38,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b2c91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38, skipping insertion in model container [2023-12-25 00:10:38,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:38,639 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 00:10:38,785 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c[526,539] [2023-12-25 00:10:38,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 00:10:38,843 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 00:10:38,857 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c[526,539] [2023-12-25 00:10:38,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 00:10:38,896 INFO L206 MainTranslator]: Completed translation [2023-12-25 00:10:38,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38 WrapperNode [2023-12-25 00:10:38,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 00:10:38,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 00:10:38,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 00:10:38,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 00:10:38,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:38,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:38,947 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 125 [2023-12-25 00:10:38,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 00:10:38,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 00:10:38,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 00:10:38,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 00:10:38,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:38,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:38,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:38,990 INFO L175 MemorySlicer]: Split 16 memory accesses to 2 slices as follows [2, 14]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2023-12-25 00:10:38,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:38,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:39,001 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:39,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:39,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:39,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:39,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 00:10:39,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 00:10:39,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 00:10:39,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 00:10:39,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (1/1) ... [2023-12-25 00:10:39,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 00:10:39,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 00:10:39,047 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) [2023-12-25 00:10:39,049 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 [2023-12-25 00:10:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 00:10:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 00:10:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-25 00:10:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-25 00:10:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-25 00:10:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-25 00:10:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-25 00:10:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-25 00:10:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 00:10:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 00:10:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-25 00:10:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-25 00:10:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-25 00:10:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-25 00:10:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-25 00:10:39,141 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 00:10:39,143 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 00:10:39,404 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 00:10:39,431 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 00:10:39,431 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-12-25 00:10:39,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 12:10:39 BoogieIcfgContainer [2023-12-25 00:10:39,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 00:10:39,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 00:10:39,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 00:10:39,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 00:10:39,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 12:10:38" (1/3) ... [2023-12-25 00:10:39,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a0d4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 12:10:39, skipping insertion in model container [2023-12-25 00:10:39,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 12:10:38" (2/3) ... [2023-12-25 00:10:39,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a0d4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 12:10:39, skipping insertion in model container [2023-12-25 00:10:39,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 12:10:39" (3/3) ... [2023-12-25 00:10:39,437 INFO L112 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2023-12-25 00:10:39,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 00:10:39,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 00:10:39,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 00:10:39,494 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;@34cd22e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 00:10:39,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 00:10:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 00:10:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-25 00:10:39,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:39,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:39,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:39,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:39,510 INFO L85 PathProgramCache]: Analyzing trace with hash 347330670, now seen corresponding path program 1 times [2023-12-25 00:10:39,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:39,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599877217] [2023-12-25 00:10:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:39,520 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 [2023-12-25 00:10:39,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:39,523 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) [2023-12-25 00:10:39,596 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 [2023-12-25 00:10:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:39,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 00:10:39,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:10:39,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 00:10:39,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599877217] [2023-12-25 00:10:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599877217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 00:10:39,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 00:10:39,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 00:10:39,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247807663] [2023-12-25 00:10:39,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 00:10:39,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 00:10:39,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 00:10:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 00:10:39,777 INFO L87 Difference]: Start difference. First operand has 34 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 00:10:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:39,831 INFO L93 Difference]: Finished difference Result 66 states and 101 transitions. [2023-12-25 00:10:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 00:10:39,833 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-12-25 00:10:39,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:39,837 INFO L225 Difference]: With dead ends: 66 [2023-12-25 00:10:39,837 INFO L226 Difference]: Without dead ends: 32 [2023-12-25 00:10:39,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 00:10:39,843 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:39,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 00:10:39,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-25 00:10:39,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-25 00:10:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 00:10:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-12-25 00:10:39,877 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 32 [2023-12-25 00:10:39,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:39,877 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-12-25 00:10:39,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-25 00:10:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-12-25 00:10:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-25 00:10:39,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:39,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:39,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 00:10:40,083 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 [2023-12-25 00:10:40,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:40,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash 116060780, now seen corresponding path program 1 times [2023-12-25 00:10:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:40,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50264033] [2023-12-25 00:10:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:40,086 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 [2023-12-25 00:10:40,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:40,090 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) [2023-12-25 00:10:40,090 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 [2023-12-25 00:10:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:40,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 00:10:40,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 00:10:40,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 00:10:40,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50264033] [2023-12-25 00:10:40,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50264033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 00:10:40,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 00:10:40,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 00:10:40,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780739995] [2023-12-25 00:10:40,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 00:10:40,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 00:10:40,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 00:10:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 00:10:40,349 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 00:10:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:40,571 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2023-12-25 00:10:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 00:10:40,572 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2023-12-25 00:10:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:40,573 INFO L225 Difference]: With dead ends: 70 [2023-12-25 00:10:40,573 INFO L226 Difference]: Without dead ends: 56 [2023-12-25 00:10:40,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-25 00:10:40,574 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 50 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:40,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 229 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 00:10:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-25 00:10:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 41. [2023-12-25 00:10:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:10:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2023-12-25 00:10:40,584 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 32 [2023-12-25 00:10:40,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:40,585 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2023-12-25 00:10:40,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 00:10:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2023-12-25 00:10:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 00:10:40,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:40,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:40,595 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 [2023-12-25 00:10:40,790 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 [2023-12-25 00:10:40,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:40,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash 155328277, now seen corresponding path program 1 times [2023-12-25 00:10:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:40,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814253694] [2023-12-25 00:10:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:40,794 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 [2023-12-25 00:10:40,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:40,796 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) [2023-12-25 00:10:40,797 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 [2023-12-25 00:10:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:40,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 00:10:40,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:41,046 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 11 treesize of output 7 [2023-12-25 00:10:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:10:41,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 00:10:41,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:41,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814253694] [2023-12-25 00:10:41,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814253694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 00:10:41,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 00:10:41,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-25 00:10:41,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858777462] [2023-12-25 00:10:41,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 00:10:41,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 00:10:41,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:41,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 00:10:41,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-25 00:10:41,139 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 00:10:41,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:41,552 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2023-12-25 00:10:41,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 00:10:41,552 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 33 [2023-12-25 00:10:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:41,553 INFO L225 Difference]: With dead ends: 70 [2023-12-25 00:10:41,553 INFO L226 Difference]: Without dead ends: 68 [2023-12-25 00:10:41,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-12-25 00:10:41,554 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 118 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:41,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 351 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 00:10:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-25 00:10:41,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2023-12-25 00:10:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:10:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2023-12-25 00:10:41,564 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 33 [2023-12-25 00:10:41,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:41,567 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2023-12-25 00:10:41,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 00:10:41,569 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2023-12-25 00:10:41,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 00:10:41,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:41,571 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:41,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 00:10:41,773 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 [2023-12-25 00:10:41,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:41,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:41,777 INFO L85 PathProgramCache]: Analyzing trace with hash 109135695, now seen corresponding path program 1 times [2023-12-25 00:10:41,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:41,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749141841] [2023-12-25 00:10:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:41,777 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 [2023-12-25 00:10:41,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:41,778 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) [2023-12-25 00:10:41,780 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 [2023-12-25 00:10:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:41,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 00:10:41,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 00:10:41,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:10:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 00:10:42,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:42,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749141841] [2023-12-25 00:10:42,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749141841] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:10:42,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:10:42,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-12-25 00:10:42,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827533655] [2023-12-25 00:10:42,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:10:42,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 00:10:42,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 00:10:42,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 00:10:42,128 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 15 states have internal predecessors, (34), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:10:42,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:42,477 INFO L93 Difference]: Finished difference Result 93 states and 126 transitions. [2023-12-25 00:10:42,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 00:10:42,478 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 15 states have internal predecessors, (34), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 33 [2023-12-25 00:10:42,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:42,479 INFO L225 Difference]: With dead ends: 93 [2023-12-25 00:10:42,479 INFO L226 Difference]: Without dead ends: 79 [2023-12-25 00:10:42,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2023-12-25 00:10:42,480 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 85 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:42,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 359 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 00:10:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-25 00:10:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2023-12-25 00:10:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 50 states have (on average 1.28) internal successors, (64), 50 states have internal predecessors, (64), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:10:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2023-12-25 00:10:42,489 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 33 [2023-12-25 00:10:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:42,489 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2023-12-25 00:10:42,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 15 states have internal predecessors, (34), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:10:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2023-12-25 00:10:42,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-25 00:10:42,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:42,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:42,495 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 [2023-12-25 00:10:42,696 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 [2023-12-25 00:10:42,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:42,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:42,697 INFO L85 PathProgramCache]: Analyzing trace with hash -987418705, now seen corresponding path program 1 times [2023-12-25 00:10:42,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:42,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175124775] [2023-12-25 00:10:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:42,697 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 [2023-12-25 00:10:42,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:42,699 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) [2023-12-25 00:10:42,699 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 [2023-12-25 00:10:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:42,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 00:10:42,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 00:10:42,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:10:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 00:10:43,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:43,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175124775] [2023-12-25 00:10:43,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175124775] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:10:43,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:10:43,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-12-25 00:10:43,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326014901] [2023-12-25 00:10:43,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:10:43,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 00:10:43,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:43,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 00:10:43,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-12-25 00:10:43,069 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:10:43,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:43,672 INFO L93 Difference]: Finished difference Result 102 states and 135 transitions. [2023-12-25 00:10:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 00:10:43,672 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 35 [2023-12-25 00:10:43,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:43,673 INFO L225 Difference]: With dead ends: 102 [2023-12-25 00:10:43,673 INFO L226 Difference]: Without dead ends: 92 [2023-12-25 00:10:43,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-12-25 00:10:43,674 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 85 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:43,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 463 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 00:10:43,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-25 00:10:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 64. [2023-12-25 00:10:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:10:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2023-12-25 00:10:43,682 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 35 [2023-12-25 00:10:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:43,682 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2023-12-25 00:10:43,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:10:43,683 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2023-12-25 00:10:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-25 00:10:43,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:43,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:43,689 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 [2023-12-25 00:10:43,886 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 [2023-12-25 00:10:43,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:43,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:43,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1709789265, now seen corresponding path program 1 times [2023-12-25 00:10:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:43,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662106327] [2023-12-25 00:10:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:43,888 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 [2023-12-25 00:10:43,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:43,889 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) [2023-12-25 00:10:43,890 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 (7)] Waiting until timeout for monitored process [2023-12-25 00:10:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:43,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 00:10:43,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 00:10:44,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:10:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:10:44,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:44,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662106327] [2023-12-25 00:10:44,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662106327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:10:44,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:10:44,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-12-25 00:10:44,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568555974] [2023-12-25 00:10:44,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:10:44,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 00:10:44,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 00:10:44,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-25 00:10:44,233 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand has 16 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 15 states have internal predecessors, (46), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:10:44,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:44,542 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2023-12-25 00:10:44,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 00:10:44,542 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 15 states have internal predecessors, (46), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 36 [2023-12-25 00:10:44,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:44,543 INFO L225 Difference]: With dead ends: 79 [2023-12-25 00:10:44,543 INFO L226 Difference]: Without dead ends: 69 [2023-12-25 00:10:44,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-12-25 00:10:44,544 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 45 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:44,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 369 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 00:10:44,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-25 00:10:44,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2023-12-25 00:10:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 54 states have internal predecessors, (69), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:10:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2023-12-25 00:10:44,551 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 36 [2023-12-25 00:10:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:44,551 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2023-12-25 00:10:44,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 15 states have internal predecessors, (46), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:10:44,552 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2023-12-25 00:10:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-25 00:10:44,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:44,552 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:44,557 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 [2023-12-25 00:10:44,755 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 [2023-12-25 00:10:44,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:44,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:44,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1163402438, now seen corresponding path program 1 times [2023-12-25 00:10:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:44,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855831600] [2023-12-25 00:10:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:44,756 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 [2023-12-25 00:10:44,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:44,757 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) [2023-12-25 00:10:44,757 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 [2023-12-25 00:10:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:44,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 00:10:44,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 00:10:44,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 00:10:44,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:44,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855831600] [2023-12-25 00:10:44,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855831600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 00:10:44,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 00:10:44,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 00:10:44,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063238255] [2023-12-25 00:10:44,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 00:10:44,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 00:10:44,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:44,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 00:10:44,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 00:10:44,840 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-25 00:10:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:44,932 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2023-12-25 00:10:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 00:10:44,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2023-12-25 00:10:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:44,933 INFO L225 Difference]: With dead ends: 85 [2023-12-25 00:10:44,933 INFO L226 Difference]: Without dead ends: 72 [2023-12-25 00:10:44,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 00:10:44,934 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:44,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 82 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 00:10:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-25 00:10:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2023-12-25 00:10:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:10:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 90 transitions. [2023-12-25 00:10:44,941 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 90 transitions. Word has length 37 [2023-12-25 00:10:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:44,942 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 90 transitions. [2023-12-25 00:10:44,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-25 00:10:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 90 transitions. [2023-12-25 00:10:44,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-25 00:10:44,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:44,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:44,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 00:10:45,145 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 [2023-12-25 00:10:45,147 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:45,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:45,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1151291752, now seen corresponding path program 1 times [2023-12-25 00:10:45,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:45,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954129386] [2023-12-25 00:10:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:45,147 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 [2023-12-25 00:10:45,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:45,150 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) [2023-12-25 00:10:45,154 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 [2023-12-25 00:10:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:45,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 00:10:45,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 00:10:45,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:10:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 00:10:45,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:45,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954129386] [2023-12-25 00:10:45,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954129386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:10:45,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:10:45,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2023-12-25 00:10:45,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549892557] [2023-12-25 00:10:45,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:10:45,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 00:10:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 00:10:45,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-12-25 00:10:45,556 INFO L87 Difference]: Start difference. First operand 68 states and 90 transitions. Second operand has 18 states, 16 states have (on average 2.625) internal successors, (42), 17 states have internal predecessors, (42), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:10:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:46,189 INFO L93 Difference]: Finished difference Result 125 states and 170 transitions. [2023-12-25 00:10:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 00:10:46,189 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.625) internal successors, (42), 17 states have internal predecessors, (42), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 38 [2023-12-25 00:10:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:46,190 INFO L225 Difference]: With dead ends: 125 [2023-12-25 00:10:46,190 INFO L226 Difference]: Without dead ends: 99 [2023-12-25 00:10:46,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2023-12-25 00:10:46,191 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 128 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:46,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 323 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 00:10:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-25 00:10:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2023-12-25 00:10:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:10:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 103 transitions. [2023-12-25 00:10:46,200 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 103 transitions. Word has length 38 [2023-12-25 00:10:46,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:46,200 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 103 transitions. [2023-12-25 00:10:46,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.625) internal successors, (42), 17 states have internal predecessors, (42), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:10:46,200 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 103 transitions. [2023-12-25 00:10:46,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 00:10:46,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:46,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:46,207 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 [2023-12-25 00:10:46,404 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 [2023-12-25 00:10:46,404 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:46,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:46,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1797037536, now seen corresponding path program 1 times [2023-12-25 00:10:46,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:46,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814026775] [2023-12-25 00:10:46,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:46,405 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 [2023-12-25 00:10:46,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:46,406 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) [2023-12-25 00:10:46,407 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 [2023-12-25 00:10:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:46,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 00:10:46,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-25 00:10:46,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:10:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-25 00:10:46,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:46,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814026775] [2023-12-25 00:10:46,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814026775] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:10:46,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:10:46,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-25 00:10:46,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576990704] [2023-12-25 00:10:46,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:10:46,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 00:10:46,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:46,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 00:10:46,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 00:10:46,932 INFO L87 Difference]: Start difference. First operand 78 states and 103 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-25 00:10:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:47,947 INFO L93 Difference]: Finished difference Result 123 states and 167 transitions. [2023-12-25 00:10:47,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 00:10:47,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2023-12-25 00:10:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:47,952 INFO L225 Difference]: With dead ends: 123 [2023-12-25 00:10:47,952 INFO L226 Difference]: Without dead ends: 117 [2023-12-25 00:10:47,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-25 00:10:47,953 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:47,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 155 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 00:10:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-25 00:10:47,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 90. [2023-12-25 00:10:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 77 states have internal predecessors, (101), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:10:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 121 transitions. [2023-12-25 00:10:47,964 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 121 transitions. Word has length 39 [2023-12-25 00:10:47,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:47,964 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 121 transitions. [2023-12-25 00:10:47,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-25 00:10:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 121 transitions. [2023-12-25 00:10:47,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-25 00:10:47,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:47,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:47,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-25 00:10:48,168 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 [2023-12-25 00:10:48,168 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:48,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2081265801, now seen corresponding path program 1 times [2023-12-25 00:10:48,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:48,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013553641] [2023-12-25 00:10:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:48,169 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 [2023-12-25 00:10:48,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:48,170 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) [2023-12-25 00:10:48,171 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 [2023-12-25 00:10:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:48,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 00:10:48,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 00:10:48,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 00:10:48,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013553641] [2023-12-25 00:10:48,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013553641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 00:10:48,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 00:10:48,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 00:10:48,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307058888] [2023-12-25 00:10:48,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 00:10:48,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 00:10:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 00:10:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-25 00:10:48,334 INFO L87 Difference]: Start difference. First operand 90 states and 121 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 00:10:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:48,523 INFO L93 Difference]: Finished difference Result 92 states and 122 transitions. [2023-12-25 00:10:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 00:10:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2023-12-25 00:10:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:48,524 INFO L225 Difference]: With dead ends: 92 [2023-12-25 00:10:48,525 INFO L226 Difference]: Without dead ends: 65 [2023-12-25 00:10:48,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-25 00:10:48,525 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 30 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:48,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 156 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 00:10:48,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-25 00:10:48,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-12-25 00:10:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.309090909090909) internal successors, (72), 55 states have internal predecessors, (72), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:10:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2023-12-25 00:10:48,533 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 86 transitions. Word has length 41 [2023-12-25 00:10:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:48,533 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 86 transitions. [2023-12-25 00:10:48,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 00:10:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2023-12-25 00:10:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-25 00:10:48,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:48,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:48,537 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 [2023-12-25 00:10:48,736 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 [2023-12-25 00:10:48,737 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:48,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash -763764112, now seen corresponding path program 1 times [2023-12-25 00:10:48,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:48,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239953187] [2023-12-25 00:10:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:48,738 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 [2023-12-25 00:10:48,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:48,739 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) [2023-12-25 00:10:48,740 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 [2023-12-25 00:10:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:48,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 00:10:48,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 00:10:49,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:10:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 00:10:51,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:10:51,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239953187] [2023-12-25 00:10:51,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239953187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:10:51,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:10:51,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2023-12-25 00:10:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935854528] [2023-12-25 00:10:51,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:10:51,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 00:10:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:10:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 00:10:51,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2023-12-25 00:10:51,259 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand has 22 states, 20 states have (on average 2.6) internal successors, (52), 21 states have internal predecessors, (52), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:10:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:10:56,523 INFO L93 Difference]: Finished difference Result 110 states and 148 transitions. [2023-12-25 00:10:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 00:10:56,523 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.6) internal successors, (52), 21 states have internal predecessors, (52), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 42 [2023-12-25 00:10:56,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:10:56,524 INFO L225 Difference]: With dead ends: 110 [2023-12-25 00:10:56,524 INFO L226 Difference]: Without dead ends: 101 [2023-12-25 00:10:56,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 00:10:56,525 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 199 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-25 00:10:56,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 302 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-25 00:10:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-25 00:10:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2023-12-25 00:10:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.296875) internal successors, (83), 64 states have internal predecessors, (83), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:10:56,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2023-12-25 00:10:56,534 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 42 [2023-12-25 00:10:56,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:10:56,534 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2023-12-25 00:10:56,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.6) internal successors, (52), 21 states have internal predecessors, (52), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:10:56,535 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2023-12-25 00:10:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-25 00:10:56,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:10:56,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:10:56,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-25 00:10:56,738 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 [2023-12-25 00:10:56,739 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:10:56,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:10:56,739 INFO L85 PathProgramCache]: Analyzing trace with hash 619724305, now seen corresponding path program 1 times [2023-12-25 00:10:56,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:10:56,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309353546] [2023-12-25 00:10:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:10:56,740 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 [2023-12-25 00:10:56,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:10:56,741 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) [2023-12-25 00:10:56,756 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 [2023-12-25 00:10:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:10:56,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-25 00:10:56,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:10:57,113 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 [2023-12-25 00:10:57,254 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-25 00:10:57,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 00:10:57,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 29 [2023-12-25 00:10:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 00:10:57,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:10:57,797 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 60 treesize of output 56 [2023-12-25 00:10:57,824 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-25 00:10:57,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1202 treesize of output 1050 [2023-12-25 00:11:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 00:11:00,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:11:00,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309353546] [2023-12-25 00:11:00,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309353546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:11:00,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:11:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 32 [2023-12-25 00:11:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184444264] [2023-12-25 00:11:00,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:11:00,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-25 00:11:00,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:11:00,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-25 00:11:00,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2023-12-25 00:11:00,178 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 32 states, 30 states have (on average 2.0) internal successors, (60), 31 states have internal predecessors, (60), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-25 00:11:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:11:03,918 INFO L93 Difference]: Finished difference Result 113 states and 147 transitions. [2023-12-25 00:11:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 00:11:03,918 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.0) internal successors, (60), 31 states have internal predecessors, (60), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 43 [2023-12-25 00:11:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:11:03,919 INFO L225 Difference]: With dead ends: 113 [2023-12-25 00:11:03,919 INFO L226 Difference]: Without dead ends: 111 [2023-12-25 00:11:03,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=312, Invalid=1850, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 00:11:03,920 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 147 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 00:11:03,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 608 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 00:11:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-25 00:11:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 81. [2023-12-25 00:11:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 71 states have internal predecessors, (93), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:11:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2023-12-25 00:11:03,931 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 43 [2023-12-25 00:11:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:11:03,932 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2023-12-25 00:11:03,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.0) internal successors, (60), 31 states have internal predecessors, (60), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-25 00:11:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2023-12-25 00:11:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-25 00:11:03,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:11:03,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:11:03,940 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 (13)] Ended with exit code 0 [2023-12-25 00:11:04,132 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 [2023-12-25 00:11:04,133 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:11:04,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:11:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1893840663, now seen corresponding path program 2 times [2023-12-25 00:11:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:11:04,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14311555] [2023-12-25 00:11:04,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 00:11:04,134 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 [2023-12-25 00:11:04,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:11:04,135 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) [2023-12-25 00:11:04,135 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 [2023-12-25 00:11:04,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 00:11:04,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:11:04,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 00:11:04,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:11:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 00:11:06,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:11:09,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:11:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14311555] [2023-12-25 00:11:09,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14311555] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 00:11:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2025755284] [2023-12-25 00:11:09,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 00:11:09,268 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 00:11:09,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 00:11:09,269 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 00:11:09,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-25 00:11:09,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 00:11:09,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:11:09,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 00:11:09,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:11:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 00:11:09,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:11:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 00:11:10,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2025755284] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:11:10,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 00:11:10,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 9] total 27 [2023-12-25 00:11:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025639084] [2023-12-25 00:11:10,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 00:11:10,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-25 00:11:10,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:11:10,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-25 00:11:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 00:11:10,691 INFO L87 Difference]: Start difference. First operand 81 states and 107 transitions. Second operand has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 26 states have internal predecessors, (80), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-25 00:11:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:11:18,210 INFO L93 Difference]: Finished difference Result 216 states and 297 transitions. [2023-12-25 00:11:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-25 00:11:18,211 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 26 states have internal predecessors, (80), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 43 [2023-12-25 00:11:18,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:11:18,212 INFO L225 Difference]: With dead ends: 216 [2023-12-25 00:11:18,212 INFO L226 Difference]: Without dead ends: 160 [2023-12-25 00:11:18,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=693, Invalid=3339, Unknown=0, NotChecked=0, Total=4032 [2023-12-25 00:11:18,214 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 192 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 00:11:18,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 569 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 00:11:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-25 00:11:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 124. [2023-12-25 00:11:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 111 states have (on average 1.3243243243243243) internal successors, (147), 111 states have internal predecessors, (147), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:11:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 167 transitions. [2023-12-25 00:11:18,237 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 167 transitions. Word has length 43 [2023-12-25 00:11:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:11:18,237 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 167 transitions. [2023-12-25 00:11:18,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 26 states have internal predecessors, (80), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-25 00:11:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 167 transitions. [2023-12-25 00:11:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-25 00:11:18,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:11:18,238 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:11:18,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-25 00:11:18,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-25 00:11:18,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-25 00:11:18,640 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:11:18,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:11:18,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1349300751, now seen corresponding path program 3 times [2023-12-25 00:11:18,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:11:18,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225596098] [2023-12-25 00:11:18,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 00:11:18,641 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 [2023-12-25 00:11:18,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:11:18,642 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) [2023-12-25 00:11:18,647 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 [2023-12-25 00:11:18,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 00:11:18,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:11:18,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-25 00:11:18,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:11:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 00:11:21,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:11:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 00:11:28,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:11:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225596098] [2023-12-25 00:11:28,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225596098] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:11:28,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:11:28,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2023-12-25 00:11:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314319784] [2023-12-25 00:11:28,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:11:28,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 00:11:28,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:11:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 00:11:28,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-12-25 00:11:28,974 INFO L87 Difference]: Start difference. First operand 124 states and 167 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-25 00:11:55,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:11:55,141 INFO L93 Difference]: Finished difference Result 194 states and 267 transitions. [2023-12-25 00:11:55,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 00:11:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2023-12-25 00:11:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:11:55,155 INFO L225 Difference]: With dead ends: 194 [2023-12-25 00:11:55,155 INFO L226 Difference]: Without dead ends: 183 [2023-12-25 00:11:55,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=346, Invalid=1376, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 00:11:55,156 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 72 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-12-25 00:11:55,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 215 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-12-25 00:11:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-25 00:11:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2023-12-25 00:11:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 140 states have (on average 1.35) internal successors, (189), 140 states have internal predecessors, (189), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:11:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 209 transitions. [2023-12-25 00:11:55,204 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 209 transitions. Word has length 45 [2023-12-25 00:11:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:11:55,204 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 209 transitions. [2023-12-25 00:11:55,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-25 00:11:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 209 transitions. [2023-12-25 00:11:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 00:11:55,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:11:55,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:11:55,209 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 [2023-12-25 00:11:55,405 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 [2023-12-25 00:11:55,405 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:11:55,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:11:55,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1852768299, now seen corresponding path program 1 times [2023-12-25 00:11:55,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:11:55,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142332359] [2023-12-25 00:11:55,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:11:55,406 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 [2023-12-25 00:11:55,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:11:55,408 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) [2023-12-25 00:11:55,408 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 [2023-12-25 00:11:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:11:55,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-25 00:11:55,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:11:55,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-12-25 00:11:55,749 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-25 00:11:55,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2023-12-25 00:11:55,794 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 8 treesize of output 1 [2023-12-25 00:11:55,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-12-25 00:11:55,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 18 [2023-12-25 00:11:56,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 27 [2023-12-25 00:11:56,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 00:11:56,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2023-12-25 00:11:56,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-25 00:11:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 00:11:56,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2023-12-25 00:11:57,080 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-25 00:11:57,081 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 20 [2023-12-25 00:11:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 00:11:57,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:12:39,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 00:12:39,959 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 9044 treesize of output 8146 [2023-12-25 00:12:40,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 00:12:40,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 74278 treesize of output 69766 [2023-12-25 00:12:54,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 00:12:54,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 64 treesize of output 1 [2023-12-25 00:12:54,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17812 treesize of output 15912 [2023-12-25 00:13:01,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:13:01,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142332359] [2023-12-25 00:13:01,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142332359] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 00:13:01,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2029139989] [2023-12-25 00:13:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 00:13:01,923 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 00:13:01,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 00:13:01,925 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 00:13:01,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-25 00:13:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:13:02,148 WARN L260 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-25 00:13:02,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:13:02,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-12-25 00:13:03,414 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 7 treesize of output 6 [2023-12-25 00:13:04,302 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-12-25 00:13:04,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 22 [2023-12-25 00:13:05,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-12-25 00:13:06,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-25 00:13:07,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-12-25 00:13:09,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2023-12-25 00:13:10,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2023-12-25 00:13:11,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 62 [2023-12-25 00:13:15,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 122 [2023-12-25 00:13:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 00:13:15,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:14:36,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2029139989] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 00:14:36,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:14:36,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 46 [2023-12-25 00:14:36,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034984651] [2023-12-25 00:14:36,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:14:36,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 00:14:36,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:14:36,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 00:14:36,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=5357, Unknown=5, NotChecked=0, Total=5852 [2023-12-25 00:14:36,230 INFO L87 Difference]: Start difference. First operand 153 states and 209 transitions. Second operand has 46 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 42 states have internal predecessors, (66), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:15:10,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:15:10,129 INFO L93 Difference]: Finished difference Result 286 states and 391 transitions. [2023-12-25 00:15:10,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-25 00:15:10,131 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 42 states have internal predecessors, (66), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 46 [2023-12-25 00:15:10,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:15:10,132 INFO L225 Difference]: With dead ends: 286 [2023-12-25 00:15:10,132 INFO L226 Difference]: Without dead ends: 227 [2023-12-25 00:15:10,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3327 ImplicationChecksByTransitivity, 171.1s TimeCoverageRelationStatistics Valid=1493, Invalid=10934, Unknown=5, NotChecked=0, Total=12432 [2023-12-25 00:15:10,135 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 407 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 00:15:10,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 419 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 00:15:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-25 00:15:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 176. [2023-12-25 00:15:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 163 states have (on average 1.361963190184049) internal successors, (222), 163 states have internal predecessors, (222), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:15:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 242 transitions. [2023-12-25 00:15:10,197 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 242 transitions. Word has length 46 [2023-12-25 00:15:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:15:10,197 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 242 transitions. [2023-12-25 00:15:10,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 42 states have internal predecessors, (66), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:15:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 242 transitions. [2023-12-25 00:15:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 00:15:10,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:15:10,199 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:15:10,218 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 (17)] Forceful destruction successful, exit code 0 [2023-12-25 00:15:10,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-25 00:15:10,603 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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-25 00:15:10,604 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:15:10,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:15:10,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2080656159, now seen corresponding path program 2 times [2023-12-25 00:15:10,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:15:10,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549785820] [2023-12-25 00:15:10,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 00:15:10,604 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 [2023-12-25 00:15:10,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:15:10,605 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) [2023-12-25 00:15:10,606 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 [2023-12-25 00:15:10,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 00:15:10,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:15:10,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 00:15:10,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:15:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 00:15:11,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:15:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 00:15:11,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:15:11,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549785820] [2023-12-25 00:15:11,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549785820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:15:11,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:15:11,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2023-12-25 00:15:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092967749] [2023-12-25 00:15:11,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:15:11,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 00:15:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:15:11,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 00:15:11,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2023-12-25 00:15:11,421 INFO L87 Difference]: Start difference. First operand 176 states and 242 transitions. Second operand has 20 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:15:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:15:12,174 INFO L93 Difference]: Finished difference Result 228 states and 313 transitions. [2023-12-25 00:15:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 00:15:12,176 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 46 [2023-12-25 00:15:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:15:12,176 INFO L225 Difference]: With dead ends: 228 [2023-12-25 00:15:12,176 INFO L226 Difference]: Without dead ends: 170 [2023-12-25 00:15:12,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2023-12-25 00:15:12,177 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 56 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 00:15:12,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 249 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 00:15:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-25 00:15:12,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 155. [2023-12-25 00:15:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 142 states have (on average 1.3309859154929577) internal successors, (189), 142 states have internal predecessors, (189), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:15:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 209 transitions. [2023-12-25 00:15:12,223 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 209 transitions. Word has length 46 [2023-12-25 00:15:12,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:15:12,223 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 209 transitions. [2023-12-25 00:15:12,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:15:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 209 transitions. [2023-12-25 00:15:12,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-25 00:15:12,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:15:12,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:15:12,227 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 (19)] Forceful destruction successful, exit code 0 [2023-12-25 00:15:12,424 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 [2023-12-25 00:15:12,424 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:15:12,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:15:12,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1901699646, now seen corresponding path program 4 times [2023-12-25 00:15:12,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:15:12,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375666658] [2023-12-25 00:15:12,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 00:15:12,425 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 [2023-12-25 00:15:12,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:15:12,426 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) [2023-12-25 00:15:12,429 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 [2023-12-25 00:15:12,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 00:15:12,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:15:12,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 00:15:12,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:15:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 00:15:12,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:15:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 00:15:14,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:15:14,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375666658] [2023-12-25 00:15:14,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375666658] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:15:14,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:15:14,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-25 00:15:14,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658796592] [2023-12-25 00:15:14,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:15:14,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 00:15:14,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:15:14,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 00:15:14,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-25 00:15:14,629 INFO L87 Difference]: Start difference. First operand 155 states and 209 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-25 00:15:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:15:16,393 INFO L93 Difference]: Finished difference Result 198 states and 269 transitions. [2023-12-25 00:15:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 00:15:16,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2023-12-25 00:15:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:15:16,394 INFO L225 Difference]: With dead ends: 198 [2023-12-25 00:15:16,394 INFO L226 Difference]: Without dead ends: 148 [2023-12-25 00:15:16,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-25 00:15:16,395 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 00:15:16,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 128 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 00:15:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-25 00:15:16,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2023-12-25 00:15:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 134 states have (on average 1.3134328358208955) internal successors, (176), 134 states have internal predecessors, (176), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:15:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 196 transitions. [2023-12-25 00:15:16,437 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 196 transitions. Word has length 47 [2023-12-25 00:15:16,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:15:16,437 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 196 transitions. [2023-12-25 00:15:16,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-25 00:15:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 196 transitions. [2023-12-25 00:15:16,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-25 00:15:16,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:15:16,438 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:15:16,442 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 [2023-12-25 00:15:16,641 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 [2023-12-25 00:15:16,642 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:15:16,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:15:16,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1961644527, now seen corresponding path program 5 times [2023-12-25 00:15:16,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:15:16,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206907502] [2023-12-25 00:15:16,643 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 00:15:16,643 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 [2023-12-25 00:15:16,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:15:16,644 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) [2023-12-25 00:15:16,646 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 (21)] Waiting until timeout for monitored process [2023-12-25 00:15:16,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-25 00:15:16,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:15:16,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 00:15:16,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:15:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 00:15:17,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:15:23,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:15:23,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206907502] [2023-12-25 00:15:23,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206907502] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 00:15:23,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1894169770] [2023-12-25 00:15:23,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 00:15:23,961 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 00:15:23,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 00:15:23,962 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 00:15:23,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-25 00:15:24,194 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-25 00:15:24,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:15:24,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 00:15:24,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:15:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 00:15:28,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:15:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1894169770] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 00:15:33,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:15:33,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 25 [2023-12-25 00:15:33,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956953806] [2023-12-25 00:15:33,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:15:33,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 00:15:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:15:33,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 00:15:33,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 00:15:33,235 INFO L87 Difference]: Start difference. First operand 147 states and 196 transitions. Second operand has 25 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 00:16:25,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:16:25,167 INFO L93 Difference]: Finished difference Result 278 states and 378 transitions. [2023-12-25 00:16:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-25 00:16:25,181 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 47 [2023-12-25 00:16:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:16:25,182 INFO L225 Difference]: With dead ends: 278 [2023-12-25 00:16:25,182 INFO L226 Difference]: Without dead ends: 260 [2023-12-25 00:16:25,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=573, Invalid=3087, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 00:16:25,183 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 111 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-25 00:16:25,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 789 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-25 00:16:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-25 00:16:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 94. [2023-12-25 00:16:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 84 states have internal predecessors, (107), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:16:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2023-12-25 00:16:25,216 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 121 transitions. Word has length 47 [2023-12-25 00:16:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:16:25,216 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 121 transitions. [2023-12-25 00:16:25,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 00:16:25,217 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 121 transitions. [2023-12-25 00:16:25,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-25 00:16:25,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:16:25,217 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:16:25,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-25 00:16:25,421 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 [2023-12-25 00:16:25,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-25 00:16:25,618 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:16:25,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:16:25,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1517879994, now seen corresponding path program 3 times [2023-12-25 00:16:25,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:16:25,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239216248] [2023-12-25 00:16:25,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 00:16:25,618 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 [2023-12-25 00:16:25,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:16:25,619 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) [2023-12-25 00:16:25,620 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 [2023-12-25 00:16:25,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-25 00:16:25,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:16:25,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 00:16:25,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:16:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 00:16:30,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:16:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-25 00:16:40,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:16:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239216248] [2023-12-25 00:16:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239216248] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:16:40,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:16:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2023-12-25 00:16:40,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935813218] [2023-12-25 00:16:40,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:16:40,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 00:16:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:16:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 00:16:40,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-12-25 00:16:40,268 INFO L87 Difference]: Start difference. First operand 94 states and 121 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-25 00:16:49,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-25 00:17:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:17:23,255 INFO L93 Difference]: Finished difference Result 122 states and 158 transitions. [2023-12-25 00:17:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 00:17:23,263 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2023-12-25 00:17:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:17:23,264 INFO L225 Difference]: With dead ends: 122 [2023-12-25 00:17:23,264 INFO L226 Difference]: Without dead ends: 114 [2023-12-25 00:17:23,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 41.3s TimeCoverageRelationStatistics Valid=344, Invalid=1138, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 00:17:23,264 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 116 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-25 00:17:23,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 178 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-25 00:17:23,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-25 00:17:23,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2023-12-25 00:17:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 79 states have (on average 1.240506329113924) internal successors, (98), 79 states have internal predecessors, (98), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:17:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2023-12-25 00:17:23,305 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 48 [2023-12-25 00:17:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:17:23,305 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2023-12-25 00:17:23,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-25 00:17:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2023-12-25 00:17:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-25 00:17:23,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:17:23,305 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:17:23,308 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 [2023-12-25 00:17:23,506 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 [2023-12-25 00:17:23,506 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:17:23,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:17:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1190807663, now seen corresponding path program 2 times [2023-12-25 00:17:23,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:17:23,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752065278] [2023-12-25 00:17:23,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 00:17:23,507 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 [2023-12-25 00:17:23,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:17:23,508 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) [2023-12-25 00:17:23,508 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 [2023-12-25 00:17:23,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 00:17:23,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:17:23,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 00:17:23,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:17:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 00:17:23,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:17:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 00:17:24,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:17:24,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752065278] [2023-12-25 00:17:24,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752065278] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:17:24,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:17:24,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2023-12-25 00:17:24,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296686853] [2023-12-25 00:17:24,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:17:24,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 00:17:24,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:17:24,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 00:17:24,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-12-25 00:17:24,265 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand has 20 states, 18 states have (on average 3.888888888888889) internal successors, (70), 19 states have internal predecessors, (70), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:17:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:17:24,855 INFO L93 Difference]: Finished difference Result 96 states and 119 transitions. [2023-12-25 00:17:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 00:17:24,856 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.888888888888889) internal successors, (70), 19 states have internal predecessors, (70), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 49 [2023-12-25 00:17:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:17:24,856 INFO L225 Difference]: With dead ends: 96 [2023-12-25 00:17:24,856 INFO L226 Difference]: Without dead ends: 61 [2023-12-25 00:17:24,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2023-12-25 00:17:24,857 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 43 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 00:17:24,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 322 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 00:17:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-25 00:17:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-25 00:17:24,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 00:17:24,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2023-12-25 00:17:24,883 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 49 [2023-12-25 00:17:24,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:17:24,883 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2023-12-25 00:17:24,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.888888888888889) internal successors, (70), 19 states have internal predecessors, (70), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:17:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2023-12-25 00:17:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-25 00:17:24,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:17:24,883 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:17:24,889 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 (24)] Ended with exit code 0 [2023-12-25 00:17:25,087 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 [2023-12-25 00:17:25,087 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:17:25,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:17:25,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1551063318, now seen corresponding path program 6 times [2023-12-25 00:17:25,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:17:25,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961028009] [2023-12-25 00:17:25,087 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 00:17:25,088 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 [2023-12-25 00:17:25,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:17:25,088 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) [2023-12-25 00:17:25,089 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 [2023-12-25 00:17:25,192 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-25 00:17:25,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:17:25,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 00:17:25,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:17:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-25 00:17:25,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:17:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-25 00:17:25,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:17:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961028009] [2023-12-25 00:17:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961028009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:17:25,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:17:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2023-12-25 00:17:25,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485564784] [2023-12-25 00:17:25,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:17:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 00:17:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:17:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 00:17:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2023-12-25 00:17:25,928 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand has 24 states, 22 states have (on average 2.909090909090909) internal successors, (64), 23 states have internal predecessors, (64), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:17:26,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:17:26,940 INFO L93 Difference]: Finished difference Result 175 states and 240 transitions. [2023-12-25 00:17:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 00:17:26,941 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.909090909090909) internal successors, (64), 23 states have internal predecessors, (64), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 53 [2023-12-25 00:17:26,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:17:26,941 INFO L225 Difference]: With dead ends: 175 [2023-12-25 00:17:26,941 INFO L226 Difference]: Without dead ends: 113 [2023-12-25 00:17:26,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=948, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 00:17:26,942 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 279 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 00:17:26,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 315 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 00:17:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-25 00:17:26,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 62. [2023-12-25 00:17:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 55 states have (on average 1.309090909090909) internal successors, (72), 55 states have internal predecessors, (72), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 00:17:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2023-12-25 00:17:26,969 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 53 [2023-12-25 00:17:26,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:17:26,969 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2023-12-25 00:17:26,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.909090909090909) internal successors, (64), 23 states have internal predecessors, (64), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:17:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2023-12-25 00:17:26,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-25 00:17:26,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:17:26,970 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:17:26,973 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 [2023-12-25 00:17:27,173 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 [2023-12-25 00:17:27,174 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:17:27,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:17:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1189689484, now seen corresponding path program 7 times [2023-12-25 00:17:27,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:17:27,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872378857] [2023-12-25 00:17:27,174 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 00:17:27,174 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 [2023-12-25 00:17:27,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:17:27,175 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) [2023-12-25 00:17:27,178 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 [2023-12-25 00:17:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 00:17:27,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 00:17:27,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:17:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-25 00:17:27,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:17:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-25 00:17:27,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:17:27,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872378857] [2023-12-25 00:17:27,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872378857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:17:27,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:17:27,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2023-12-25 00:17:27,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521818232] [2023-12-25 00:17:27,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:17:27,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 00:17:27,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:17:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 00:17:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2023-12-25 00:17:27,819 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 22 states, 20 states have (on average 2.8) internal successors, (56), 21 states have internal predecessors, (56), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:17:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:17:28,868 INFO L93 Difference]: Finished difference Result 155 states and 212 transitions. [2023-12-25 00:17:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 00:17:28,869 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.8) internal successors, (56), 21 states have internal predecessors, (56), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 54 [2023-12-25 00:17:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:17:28,870 INFO L225 Difference]: With dead ends: 155 [2023-12-25 00:17:28,870 INFO L226 Difference]: Without dead ends: 124 [2023-12-25 00:17:28,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=1128, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 00:17:28,871 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 245 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 00:17:28,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 196 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 00:17:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-25 00:17:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 87. [2023-12-25 00:17:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 77 states have internal predecessors, (99), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:17:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2023-12-25 00:17:28,914 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 54 [2023-12-25 00:17:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:17:28,915 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2023-12-25 00:17:28,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.8) internal successors, (56), 21 states have internal predecessors, (56), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:17:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2023-12-25 00:17:28,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-25 00:17:28,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:17:28,915 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:17:28,922 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 (26)] Ended with exit code 0 [2023-12-25 00:17:29,118 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 [2023-12-25 00:17:29,119 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:17:29,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:17:29,119 INFO L85 PathProgramCache]: Analyzing trace with hash -617483604, now seen corresponding path program 8 times [2023-12-25 00:17:29,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:17:29,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613635848] [2023-12-25 00:17:29,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 00:17:29,120 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 [2023-12-25 00:17:29,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:17:29,121 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) [2023-12-25 00:17:29,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-25 00:17:29,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 00:17:29,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:17:29,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-25 00:17:29,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:17:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-25 00:17:29,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:17:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-25 00:17:35,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:17:35,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613635848] [2023-12-25 00:17:35,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613635848] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:17:35,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:17:35,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2023-12-25 00:17:35,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929279190] [2023-12-25 00:17:35,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:17:35,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 00:17:35,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:17:35,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 00:17:35,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2023-12-25 00:17:35,237 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 28 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:17:44,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:17:44,500 INFO L93 Difference]: Finished difference Result 183 states and 250 transitions. [2023-12-25 00:17:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 00:17:44,501 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 55 [2023-12-25 00:17:44,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:17:44,501 INFO L225 Difference]: With dead ends: 183 [2023-12-25 00:17:44,502 INFO L226 Difference]: Without dead ends: 152 [2023-12-25 00:17:44,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=333, Invalid=1473, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 00:17:44,502 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 225 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 00:17:44,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 321 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 00:17:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-25 00:17:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 106. [2023-12-25 00:17:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 96 states have (on average 1.28125) internal successors, (123), 96 states have internal predecessors, (123), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:17:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2023-12-25 00:17:44,556 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 55 [2023-12-25 00:17:44,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:17:44,556 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2023-12-25 00:17:44,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:17:44,556 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2023-12-25 00:17:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-25 00:17:44,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:17:44,557 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:17:44,561 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 [2023-12-25 00:17:44,757 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 [2023-12-25 00:17:44,757 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:17:44,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:17:44,758 INFO L85 PathProgramCache]: Analyzing trace with hash -618759213, now seen corresponding path program 9 times [2023-12-25 00:17:44,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:17:44,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092631651] [2023-12-25 00:17:44,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 00:17:44,758 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 [2023-12-25 00:17:44,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:17:44,759 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) [2023-12-25 00:17:44,762 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 [2023-12-25 00:17:45,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 00:17:45,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:17:45,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-25 00:17:45,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:17:45,719 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 [2023-12-25 00:17:45,934 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-25 00:17:45,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-25 00:17:46,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 11 [2023-12-25 00:17:46,358 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 30 treesize of output 11 [2023-12-25 00:17:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 00:17:46,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:17:59,776 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 190 treesize of output 182 [2023-12-25 00:18:00,195 INFO L349 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2023-12-25 00:18:00,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 430528212 treesize of output 381089510 [2023-12-25 00:18:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-25 00:18:24,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:18:24,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092631651] [2023-12-25 00:18:24,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092631651] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:18:24,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:18:24,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 21] total 46 [2023-12-25 00:18:24,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284846078] [2023-12-25 00:18:24,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:18:24,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 00:18:24,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:18:24,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 00:18:24,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 00:18:24,183 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand has 46 states, 44 states have (on average 1.8636363636363635) internal successors, (82), 45 states have internal predecessors, (82), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-25 00:18:45,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-25 00:18:49,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-25 00:18:53,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-25 00:19:02,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-25 00:19:10,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 00:19:27,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 00:19:38,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 00:19:59,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 00:20:01,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 00:20:02,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 00:20:06,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 00:20:18,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 00:20:28,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:20:28,056 INFO L93 Difference]: Finished difference Result 176 states and 232 transitions. [2023-12-25 00:20:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-25 00:20:28,057 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.8636363636363635) internal successors, (82), 45 states have internal predecessors, (82), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 56 [2023-12-25 00:20:28,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:20:28,058 INFO L225 Difference]: With dead ends: 176 [2023-12-25 00:20:28,058 INFO L226 Difference]: Without dead ends: 174 [2023-12-25 00:20:28,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 84.1s TimeCoverageRelationStatistics Valid=797, Invalid=5682, Unknown=1, NotChecked=0, Total=6480 [2023-12-25 00:20:28,059 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 165 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 20 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.3s IncrementalHoareTripleChecker+Time [2023-12-25 00:20:28,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 512 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1473 Invalid, 5 Unknown, 0 Unchecked, 65.3s Time] [2023-12-25 00:20:28,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-25 00:20:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 131. [2023-12-25 00:20:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 121 states have internal predecessors, (159), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 00:20:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 173 transitions. [2023-12-25 00:20:28,140 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 173 transitions. Word has length 56 [2023-12-25 00:20:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:20:28,140 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 173 transitions. [2023-12-25 00:20:28,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.8636363636363635) internal successors, (82), 45 states have internal predecessors, (82), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-25 00:20:28,140 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 173 transitions. [2023-12-25 00:20:28,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-25 00:20:28,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:20:28,141 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:20:28,147 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 [2023-12-25 00:20:28,346 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 [2023-12-25 00:20:28,347 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:20:28,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:20:28,347 INFO L85 PathProgramCache]: Analyzing trace with hash 147658678, now seen corresponding path program 10 times [2023-12-25 00:20:28,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:20:28,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481679945] [2023-12-25 00:20:28,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 00:20:28,347 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 [2023-12-25 00:20:28,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:20:28,348 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) [2023-12-25 00:20:28,349 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 [2023-12-25 00:20:28,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 00:20:28,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:20:28,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 00:20:28,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:20:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 00:20:28,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:20:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-25 00:20:29,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:20:29,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481679945] [2023-12-25 00:20:29,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481679945] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:20:29,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:20:29,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2023-12-25 00:20:29,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95330178] [2023-12-25 00:20:29,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:20:29,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 00:20:29,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:20:29,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 00:20:29,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2023-12-25 00:20:29,673 INFO L87 Difference]: Start difference. First operand 131 states and 173 transitions. Second operand has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 27 states have internal predecessors, (54), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:20:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:20:32,191 INFO L93 Difference]: Finished difference Result 270 states and 367 transitions. [2023-12-25 00:20:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 00:20:32,192 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 27 states have internal predecessors, (54), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 57 [2023-12-25 00:20:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:20:32,193 INFO L225 Difference]: With dead ends: 270 [2023-12-25 00:20:32,193 INFO L226 Difference]: Without dead ends: 225 [2023-12-25 00:20:32,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=364, Invalid=1276, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 00:20:32,194 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 175 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 00:20:32,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 731 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 00:20:32,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-25 00:20:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 143. [2023-12-25 00:20:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 130 states have (on average 1.3) internal successors, (169), 130 states have internal predecessors, (169), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:20:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 189 transitions. [2023-12-25 00:20:32,279 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 189 transitions. Word has length 57 [2023-12-25 00:20:32,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:20:32,279 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 189 transitions. [2023-12-25 00:20:32,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 27 states have internal predecessors, (54), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 00:20:32,279 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 189 transitions. [2023-12-25 00:20:32,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-25 00:20:32,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:20:32,280 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:20:32,285 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 (29)] Forceful destruction successful, exit code 0 [2023-12-25 00:20:32,484 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 [2023-12-25 00:20:32,485 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:20:32,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:20:32,485 INFO L85 PathProgramCache]: Analyzing trace with hash -405951371, now seen corresponding path program 11 times [2023-12-25 00:20:32,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:20:32,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793730858] [2023-12-25 00:20:32,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 00:20:32,485 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 [2023-12-25 00:20:32,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:20:32,486 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) [2023-12-25 00:20:32,488 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 [2023-12-25 00:20:32,868 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-25 00:20:32,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:20:32,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 00:20:32,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:20:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-25 00:20:39,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 00:21:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-25 00:21:02,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 00:21:02,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793730858] [2023-12-25 00:21:02,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793730858] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 00:21:02,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 00:21:02,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-25 00:21:02,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493928137] [2023-12-25 00:21:02,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 00:21:02,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 00:21:02,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 00:21:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 00:21:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-12-25 00:21:02,126 INFO L87 Difference]: Start difference. First operand 143 states and 189 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-25 00:21:06,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 00:21:08,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 00:21:41,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 00:22:37,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-25 00:22:38,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-25 00:24:22,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 00:24:22,211 INFO L93 Difference]: Finished difference Result 284 states and 404 transitions. [2023-12-25 00:24:22,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-25 00:24:22,214 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2023-12-25 00:24:22,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 00:24:22,215 INFO L225 Difference]: With dead ends: 284 [2023-12-25 00:24:22,215 INFO L226 Difference]: Without dead ends: 260 [2023-12-25 00:24:22,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 198.0s TimeCoverageRelationStatistics Valid=353, Invalid=1272, Unknown=15, NotChecked=0, Total=1640 [2023-12-25 00:24:22,216 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 41 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2023-12-25 00:24:22,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 281 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 25.6s Time] [2023-12-25 00:24:22,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-25 00:24:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 213. [2023-12-25 00:24:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 200 states have (on average 1.4) internal successors, (280), 200 states have internal predecessors, (280), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 00:24:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 300 transitions. [2023-12-25 00:24:22,393 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 300 transitions. Word has length 58 [2023-12-25 00:24:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 00:24:22,393 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 300 transitions. [2023-12-25 00:24:22,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-25 00:24:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 300 transitions. [2023-12-25 00:24:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-25 00:24:22,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 00:24:22,394 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:24:22,405 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 [2023-12-25 00:24:22,594 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 [2023-12-25 00:24:22,595 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 00:24:22,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 00:24:22,595 INFO L85 PathProgramCache]: Analyzing trace with hash 548786899, now seen corresponding path program 3 times [2023-12-25 00:24:22,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 00:24:22,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256169737] [2023-12-25 00:24:22,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 00:24:22,596 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 [2023-12-25 00:24:22,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 00:24:22,597 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) [2023-12-25 00:24:22,597 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 [2023-12-25 00:24:22,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 00:24:22,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 00:24:22,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-25 00:24:22,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 00:24:23,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-12-25 00:24:23,170 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 7 treesize of output 6 [2023-12-25 00:24:23,321 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-12-25 00:24:23,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 22 [2023-12-25 00:24:23,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-12-25 00:24:23,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-25 00:24:23,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-12-25 00:24:23,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-12-25 00:24:24,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2023-12-25 00:24:24,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2023-12-25 00:24:25,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 72 [2023-12-25 00:24:25,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2023-12-25 00:24:26,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2023-12-25 00:24:27,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 82 [2023-12-25 00:24:28,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 104 [2023-12-25 00:24:28,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 119 [2023-12-25 00:24:30,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 124 [2023-12-25 00:24:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 00:24:30,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-25 00:25:17,280 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 (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 00:25:17,280 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 [2023-12-25 00:25:17,356 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 00:25:17,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-25 00:25:17,576 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 [2023-12-25 00:25:17,576 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 60 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-25 00:25:17,580 INFO L445 BasicCegarLoop]: Path program histogram: [11, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 00:25:17,582 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 00:25:17,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 12:25:17 BoogieIcfgContainer [2023-12-25 00:25:17,583 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 00:25:17,584 INFO L158 Benchmark]: Toolchain (without parser) took 878971.98ms. Allocated memory was 277.9MB in the beginning and 429.9MB in the end (delta: 152.0MB). Free memory was 229.3MB in the beginning and 255.2MB in the end (delta: -25.9MB). Peak memory consumption was 127.2MB. Max. memory is 8.0GB. [2023-12-25 00:25:17,584 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 190.8MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 00:25:17,584 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.70ms. Allocated memory is still 277.9MB. Free memory was 228.9MB in the beginning and 216.7MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 00:25:17,584 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.14ms. Allocated memory is still 277.9MB. Free memory was 216.4MB in the beginning and 214.6MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 00:25:17,584 INFO L158 Benchmark]: Boogie Preprocessor took 60.11ms. Allocated memory is still 277.9MB. Free memory was 214.6MB in the beginning and 211.8MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-25 00:25:17,585 INFO L158 Benchmark]: RCFGBuilder took 423.06ms. Allocated memory is still 277.9MB. Free memory was 211.8MB in the beginning and 191.9MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-25 00:25:17,585 INFO L158 Benchmark]: TraceAbstraction took 878150.44ms. Allocated memory was 277.9MB in the beginning and 429.9MB in the end (delta: 152.0MB). Free memory was 191.2MB in the beginning and 255.2MB in the end (delta: -64.0MB). Peak memory consumption was 88.4MB. Max. memory is 8.0GB. [2023-12-25 00:25:17,585 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 190.8MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 282.70ms. Allocated memory is still 277.9MB. Free memory was 228.9MB in the beginning and 216.7MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.14ms. Allocated memory is still 277.9MB. Free memory was 216.4MB in the beginning and 214.6MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.11ms. Allocated memory is still 277.9MB. Free memory was 214.6MB in the beginning and 211.8MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 423.06ms. Allocated memory is still 277.9MB. Free memory was 211.8MB in the beginning and 191.9MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 878150.44ms. Allocated memory was 277.9MB in the beginning and 429.9MB in the end (delta: 152.0MB). Free memory was 191.2MB in the beginning and 255.2MB in the end (delta: -64.0MB). Peak memory consumption was 88.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was analyzing trace of length 60 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 878.1s, OverallIterations: 27, TraceHistogramMax: 5, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 516.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 3072 SdHoareTripleChecker+Valid, 145.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3039 mSDsluCounter, 8656 SdHoareTripleChecker+Invalid, 136.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7849 mSDsCounter, 264 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12337 IncrementalHoareTripleChecker+Invalid, 12606 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 264 mSolverCounterUnsat, 807 mSDtfsCounter, 12337 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2553 GetRequests, 1706 SyntacticMatches, 2 SemanticMatches, 845 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 9089 ImplicationChecksByTransitivity, 609.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=213occurred in iteration=26, InterpolantAutomatonStates: 521, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 26 MinimizatonAttempts, 815 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 296.4s InterpolantComputationTime, 1281 NumberOfCodeBlocks, 1253 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 2110 ConstructedInterpolants, 75 QuantifiedInterpolants, 16457 SizeOfPredicates, 359 NumberOfNonLiveVariables, 4280 ConjunctsInSsa, 670 ConjunctsInUnsatCore, 48 InterpolantComputations, 5 PerfectInterpolantSequences, 787/1083 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