/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/standard_compare_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:45:17,038 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:45:17,126 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 06:45:17,130 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:45:17,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:45:17,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:45:17,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:45:17,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:45:17,157 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:45:17,161 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:45:17,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:45:17,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:45:17,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:45:17,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:45:17,163 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:45:17,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:45:17,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:45:17,164 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:45:17,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:45:17,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:45:17,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:45:17,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:45:17,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:45:17,166 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 06:45:17,167 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 06:45:17,167 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:45:17,167 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 06:45:17,167 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:45:17,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:45:17,168 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:45:17,168 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:45:17,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:45:17,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:45:17,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:45:17,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:45:17,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:45:17,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:45:17,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:45:17,169 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 06:45:17,169 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 06:45:17,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:45:17,170 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:45:17,170 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:45:17,170 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:45:17,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:45:17,170 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 06:45:17,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 06:45:17,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:45:17,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:45:17,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:45:17,388 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:45:17,390 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:45:17,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_compare_ground.i [2023-12-16 06:45:18,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:45:18,718 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:45:18,719 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_compare_ground.i [2023-12-16 06:45:18,725 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c0445238/5ae202f262fa408d87d164f82850dba2/FLAG317939a56 [2023-12-16 06:45:18,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c0445238/5ae202f262fa408d87d164f82850dba2 [2023-12-16 06:45:18,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:45:18,746 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:45:18,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:45:18,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:45:18,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:45:18,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:18,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7802027a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18, skipping insertion in model container [2023-12-16 06:45:18,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:18,769 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:45:18,881 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_compare_ground.i[816,829] [2023-12-16 06:45:18,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:45:18,912 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:45:18,921 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_compare_ground.i[816,829] [2023-12-16 06:45:18,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:45:18,948 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:45:18,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18 WrapperNode [2023-12-16 06:45:18,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:45:18,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:45:18,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:45:18,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:45:18,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:18,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:18,987 INFO L138 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-12-16 06:45:18,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:45:18,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:45:18,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:45:18,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:45:18,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:18,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:19,011 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:19,030 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-12-16 06:45:19,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:19,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:19,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:19,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:19,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:19,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:19,043 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:45:19,044 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:45:19,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:45:19,044 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:45:19,045 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (1/1) ... [2023-12-16 06:45:19,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:45:19,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:45:19,089 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) [2023-12-16 06:45:19,097 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 [2023-12-16 06:45:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:45:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 06:45:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 06:45:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 06:45:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 06:45:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 06:45:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 06:45:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 06:45:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:45:19,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:45:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 06:45:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 06:45:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 06:45:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 06:45:19,179 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:45:19,180 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:45:19,347 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:45:19,378 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:45:19,378 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 06:45:19,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:45:19 BoogieIcfgContainer [2023-12-16 06:45:19,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:45:19,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:45:19,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:45:19,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:45:19,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:45:18" (1/3) ... [2023-12-16 06:45:19,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ff2d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:45:19, skipping insertion in model container [2023-12-16 06:45:19,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:18" (2/3) ... [2023-12-16 06:45:19,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ff2d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:45:19, skipping insertion in model container [2023-12-16 06:45:19,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:45:19" (3/3) ... [2023-12-16 06:45:19,385 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compare_ground.i [2023-12-16 06:45:19,399 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:45:19,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:45:19,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:45:19,439 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;@2356f24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:45:19,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:45:19,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 06:45:19,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:19,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:19,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:19,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:19,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1878423107, now seen corresponding path program 1 times [2023-12-16 06:45:19,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:19,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24539959] [2023-12-16 06:45:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:45:19,461 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 [2023-12-16 06:45:19,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:19,464 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) [2023-12-16 06:45:19,468 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 [2023-12-16 06:45:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:45:19,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 06:45:19,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:45:19,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:45:19,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:19,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24539959] [2023-12-16 06:45:19,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24539959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:45:19,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:45:19,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:45:19,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112477169] [2023-12-16 06:45:19,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:45:19,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 06:45:19,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 06:45:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:45:19,575 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:19,600 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2023-12-16 06:45:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 06:45:19,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-16 06:45:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:19,611 INFO L225 Difference]: With dead ends: 28 [2023-12-16 06:45:19,612 INFO L226 Difference]: Without dead ends: 12 [2023-12-16 06:45:19,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:45:19,617 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:19,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:45:19,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-16 06:45:19,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-16 06:45:19,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2023-12-16 06:45:19,641 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 8 [2023-12-16 06:45:19,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:19,642 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2023-12-16 06:45:19,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:19,642 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2023-12-16 06:45:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 06:45:19,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:19,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:19,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 06:45:19,843 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 [2023-12-16 06:45:19,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:19,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1888581838, now seen corresponding path program 1 times [2023-12-16 06:45:19,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:19,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483859034] [2023-12-16 06:45:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:45:19,845 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 [2023-12-16 06:45:19,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:19,847 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) [2023-12-16 06:45:19,848 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 [2023-12-16 06:45:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:45:19,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:45:19,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:45:19,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:45:19,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483859034] [2023-12-16 06:45:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483859034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:45:19,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:45:19,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:45:19,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577707326] [2023-12-16 06:45:19,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:45:19,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:45:19,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:45:19,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:45:19,938 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:19,965 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-12-16 06:45:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:45:19,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-16 06:45:19,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:19,966 INFO L225 Difference]: With dead ends: 23 [2023-12-16 06:45:19,966 INFO L226 Difference]: Without dead ends: 13 [2023-12-16 06:45:19,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:45:19,968 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:19,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:45:19,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-16 06:45:19,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-16 06:45:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-12-16 06:45:19,972 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2023-12-16 06:45:19,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:19,972 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-12-16 06:45:19,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:19,972 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2023-12-16 06:45:19,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 06:45:19,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:19,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:19,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 06:45:20,173 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 [2023-12-16 06:45:20,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:20,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:20,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1920277334, now seen corresponding path program 1 times [2023-12-16 06:45:20,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:20,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954605815] [2023-12-16 06:45:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:45:20,176 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 [2023-12-16 06:45:20,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:20,177 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) [2023-12-16 06:45:20,197 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 [2023-12-16 06:45:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:45:20,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:45:20,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:45:20,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:45:20,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954605815] [2023-12-16 06:45:20,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954605815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:20,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:20,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 06:45:20,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917230856] [2023-12-16 06:45:20,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:20,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:45:20,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:20,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:45:20,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:45:20,325 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:20,387 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2023-12-16 06:45:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:45:20,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 06:45:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:20,388 INFO L225 Difference]: With dead ends: 26 [2023-12-16 06:45:20,388 INFO L226 Difference]: Without dead ends: 16 [2023-12-16 06:45:20,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:45:20,389 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:20,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:45:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-16 06:45:20,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-16 06:45:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-12-16 06:45:20,394 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2023-12-16 06:45:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:20,394 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-12-16 06:45:20,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-12-16 06:45:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 06:45:20,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:20,395 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:20,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 06:45:20,597 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 [2023-12-16 06:45:20,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:20,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:20,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1719955506, now seen corresponding path program 2 times [2023-12-16 06:45:20,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:20,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413847205] [2023-12-16 06:45:20,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:45:20,600 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 [2023-12-16 06:45:20,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:20,601 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) [2023-12-16 06:45:20,610 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 [2023-12-16 06:45:20,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 06:45:20,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:20,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:45:20,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 06:45:20,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:45:20,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:20,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413847205] [2023-12-16 06:45:20,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413847205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:45:20,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:45:20,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:45:20,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606226781] [2023-12-16 06:45:20,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:45:20,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:45:20,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:45:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:45:20,660 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:20,691 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2023-12-16 06:45:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:45:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-16 06:45:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:20,693 INFO L225 Difference]: With dead ends: 25 [2023-12-16 06:45:20,693 INFO L226 Difference]: Without dead ends: 19 [2023-12-16 06:45:20,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:45:20,694 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:20,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:45:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-16 06:45:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-12-16 06:45:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-12-16 06:45:20,698 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2023-12-16 06:45:20,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:20,698 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-12-16 06:45:20,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-12-16 06:45:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 06:45:20,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:20,699 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:20,707 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 [2023-12-16 06:45:20,901 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 [2023-12-16 06:45:20,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:20,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:20,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1284972045, now seen corresponding path program 1 times [2023-12-16 06:45:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552975614] [2023-12-16 06:45:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:45:20,903 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 [2023-12-16 06:45:20,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:20,904 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) [2023-12-16 06:45:20,905 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 [2023-12-16 06:45:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:45:20,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:45:20,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:21,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:45:21,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:45:21,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:21,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552975614] [2023-12-16 06:45:21,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552975614] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:21,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:21,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 06:45:21,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081891861] [2023-12-16 06:45:21,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:21,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 06:45:21,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 06:45:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:45:21,140 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:21,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:21,377 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2023-12-16 06:45:21,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:45:21,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-16 06:45:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:21,378 INFO L225 Difference]: With dead ends: 34 [2023-12-16 06:45:21,379 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 06:45:21,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:45:21,380 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:21,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:45:21,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 06:45:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-16 06:45:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-12-16 06:45:21,385 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2023-12-16 06:45:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:21,386 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-12-16 06:45:21,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:21,386 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-12-16 06:45:21,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 06:45:21,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:21,387 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:21,395 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 [2023-12-16 06:45:21,590 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 [2023-12-16 06:45:21,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:21,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:21,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1452311667, now seen corresponding path program 2 times [2023-12-16 06:45:21,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:21,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078092202] [2023-12-16 06:45:21,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:45:21,592 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 [2023-12-16 06:45:21,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:21,593 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) [2023-12-16 06:45:21,594 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 [2023-12-16 06:45:21,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:45:21,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:21,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 06:45:21,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:45:21,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:45:22,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:22,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078092202] [2023-12-16 06:45:22,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078092202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:22,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:22,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-16 06:45:22,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526463990] [2023-12-16 06:45:22,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:22,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 06:45:22,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 06:45:22,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 06:45:22,211 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:23,307 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2023-12-16 06:45:23,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 06:45:23,307 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-16 06:45:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:23,308 INFO L225 Difference]: With dead ends: 46 [2023-12-16 06:45:23,308 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 06:45:23,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 06:45:23,309 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:23,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:45:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 06:45:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-16 06:45:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-12-16 06:45:23,316 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2023-12-16 06:45:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:23,317 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-12-16 06:45:23,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-12-16 06:45:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 06:45:23,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:23,318 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:23,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 06:45:23,520 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 [2023-12-16 06:45:23,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:23,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:23,521 INFO L85 PathProgramCache]: Analyzing trace with hash 828123507, now seen corresponding path program 3 times [2023-12-16 06:45:23,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:23,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929296638] [2023-12-16 06:45:23,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:45:23,522 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 [2023-12-16 06:45:23,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:23,523 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) [2023-12-16 06:45:23,524 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 [2023-12-16 06:45:23,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 06:45:23,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:23,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:45:23,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-16 06:45:23,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:45:23,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:23,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929296638] [2023-12-16 06:45:23,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929296638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:45:23,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:45:23,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:45:23,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913005634] [2023-12-16 06:45:23,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:45:23,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:45:23,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:23,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:45:23,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:45:23,644 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:23,668 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2023-12-16 06:45:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:45:23,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-16 06:45:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:23,669 INFO L225 Difference]: With dead ends: 44 [2023-12-16 06:45:23,669 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 06:45:23,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:45:23,670 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 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 [2023-12-16 06:45:23,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:45:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 06:45:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-16 06:45:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-12-16 06:45:23,677 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 33 [2023-12-16 06:45:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:23,677 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-12-16 06:45:23,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-12-16 06:45:23,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 06:45:23,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:23,678 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:23,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-16 06:45:23,881 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 [2023-12-16 06:45:23,882 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:23,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1691836427, now seen corresponding path program 1 times [2023-12-16 06:45:23,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047732988] [2023-12-16 06:45:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:45:23,883 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 [2023-12-16 06:45:23,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:23,884 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) [2023-12-16 06:45:23,891 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 [2023-12-16 06:45:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:45:24,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 06:45:24,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:45:24,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:45:25,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047732988] [2023-12-16 06:45:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047732988] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:25,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:25,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-16 06:45:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675083980] [2023-12-16 06:45:25,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:25,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 06:45:25,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 06:45:25,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 06:45:25,818 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 48 states, 48 states have (on average 1.1875) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:32,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:32,090 INFO L93 Difference]: Finished difference Result 70 states and 97 transitions. [2023-12-16 06:45:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 06:45:32,090 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1875) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-16 06:45:32,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:32,091 INFO L225 Difference]: With dead ends: 70 [2023-12-16 06:45:32,091 INFO L226 Difference]: Without dead ends: 59 [2023-12-16 06:45:32,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 06:45:32,095 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:32,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 06:45:32,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-16 06:45:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-16 06:45:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2023-12-16 06:45:32,110 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 33 [2023-12-16 06:45:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:32,110 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2023-12-16 06:45:32,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1875) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2023-12-16 06:45:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 06:45:32,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:32,113 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:32,122 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 [2023-12-16 06:45:32,320 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 [2023-12-16 06:45:32,320 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:32,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:32,321 INFO L85 PathProgramCache]: Analyzing trace with hash 470903285, now seen corresponding path program 2 times [2023-12-16 06:45:32,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:32,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295614103] [2023-12-16 06:45:32,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:45:32,322 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 [2023-12-16 06:45:32,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:32,323 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) [2023-12-16 06:45:32,325 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 [2023-12-16 06:45:32,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:45:32,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:32,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 06:45:32,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:33,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:45:33,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:45:38,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:38,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295614103] [2023-12-16 06:45:38,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295614103] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:38,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:38,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-16 06:45:38,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928339804] [2023-12-16 06:45:38,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:38,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-16 06:45:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-16 06:45:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-16 06:45:38,597 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 96 states, 96 states have (on average 1.09375) internal successors, (105), 95 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:46:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:46:25,625 INFO L93 Difference]: Finished difference Result 118 states and 169 transitions. [2023-12-16 06:46:25,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-16 06:46:25,625 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.09375) internal successors, (105), 95 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-16 06:46:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:46:25,626 INFO L225 Difference]: With dead ends: 118 [2023-12-16 06:46:25,627 INFO L226 Difference]: Without dead ends: 107 [2023-12-16 06:46:25,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-16 06:46:25,632 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:46:25,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 434 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 06:46:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-16 06:46:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-12-16 06:46:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:46:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2023-12-16 06:46:25,642 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 57 [2023-12-16 06:46:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:46:25,642 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2023-12-16 06:46:25,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.09375) internal successors, (105), 95 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:46:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2023-12-16 06:46:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-16 06:46:25,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:46:25,644 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:46:25,654 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 [2023-12-16 06:46:25,852 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 [2023-12-16 06:46:25,852 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:46:25,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:46:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash 640220661, now seen corresponding path program 3 times [2023-12-16 06:46:25,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:46:25,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398602723] [2023-12-16 06:46:25,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:46:25,854 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 [2023-12-16 06:46:25,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:46:25,854 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) [2023-12-16 06:46:25,856 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 [2023-12-16 06:46:26,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 06:46:26,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:46:26,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 06:46:26,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:46:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-16 06:46:26,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:46:27,115 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-12-16 06:46:27,116 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 32 treesize of output 25 [2023-12-16 06:46:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-16 06:46:27,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:46:27,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398602723] [2023-12-16 06:46:27,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398602723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:46:27,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:46:27,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-16 06:46:27,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722347091] [2023-12-16 06:46:27,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:46:27,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 06:46:27,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:46:27,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 06:46:27,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:46:27,142 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:46:27,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:46:27,303 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2023-12-16 06:46:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 06:46:27,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-16 06:46:27,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:46:27,304 INFO L225 Difference]: With dead ends: 114 [2023-12-16 06:46:27,305 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 06:46:27,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-12-16 06:46:27,305 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:46:27,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 36 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:46:27,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 06:46:27,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2023-12-16 06:46:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:46:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2023-12-16 06:46:27,332 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 105 [2023-12-16 06:46:27,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:46:27,332 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2023-12-16 06:46:27,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:46:27,332 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2023-12-16 06:46:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 06:46:27,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:46:27,338 INFO L195 NwaCegarLoop]: trace histogram [94, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:46:27,344 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 [2023-12-16 06:46:27,541 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 [2023-12-16 06:46:27,541 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:46:27,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:46:27,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1130820275, now seen corresponding path program 1 times [2023-12-16 06:46:27,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:46:27,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977654239] [2023-12-16 06:46:27,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:46:27,543 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 [2023-12-16 06:46:27,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:46:27,544 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) [2023-12-16 06:46:27,546 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 [2023-12-16 06:46:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:46:28,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-16 06:46:28,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 06:46:31,217 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:46:31,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 06:46:31,251 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 (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:46:31,251 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 [2023-12-16 06:46:31,418 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 [2023-12-16 06:46:31,418 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 109 with TraceHistMax 94,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 89 known predicates. [2023-12-16 06:46:31,421 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1] [2023-12-16 06:46:31,423 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:46:31,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:46:31 BoogieIcfgContainer [2023-12-16 06:46:31,424 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:46:31,425 INFO L158 Benchmark]: Toolchain (without parser) took 72679.15ms. Allocated memory was 187.7MB in the beginning and 307.2MB in the end (delta: 119.5MB). Free memory was 133.8MB in the beginning and 239.5MB in the end (delta: -105.7MB). Peak memory consumption was 15.4MB. Max. memory is 8.0GB. [2023-12-16 06:46:31,425 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory was 134.6MB in the beginning and 134.5MB in the end (delta: 164.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:46:31,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.43ms. Allocated memory is still 187.7MB. Free memory was 133.4MB in the beginning and 122.3MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 06:46:31,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.04ms. Allocated memory is still 187.7MB. Free memory was 122.3MB in the beginning and 120.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:46:31,426 INFO L158 Benchmark]: Boogie Preprocessor took 55.67ms. Allocated memory is still 187.7MB. Free memory was 120.3MB in the beginning and 118.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:46:31,426 INFO L158 Benchmark]: RCFGBuilder took 334.96ms. Allocated memory is still 187.7MB. Free memory was 118.3MB in the beginning and 104.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 06:46:31,426 INFO L158 Benchmark]: TraceAbstraction took 72043.74ms. Allocated memory was 187.7MB in the beginning and 307.2MB in the end (delta: 119.5MB). Free memory was 104.0MB in the beginning and 239.5MB in the end (delta: -135.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:46:31,427 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory was 134.6MB in the beginning and 134.5MB in the end (delta: 164.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.43ms. Allocated memory is still 187.7MB. Free memory was 133.4MB in the beginning and 122.3MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.04ms. Allocated memory is still 187.7MB. Free memory was 122.3MB in the beginning and 120.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.67ms. Allocated memory is still 187.7MB. Free memory was 120.3MB in the beginning and 118.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 334.96ms. Allocated memory is still 187.7MB. Free memory was 118.3MB in the beginning and 104.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 72043.74ms. Allocated memory was 187.7MB in the beginning and 307.2MB in the end (delta: 119.5MB). Free memory was 104.0MB in the beginning and 239.5MB in the end (delta: -135.5MB). There was no memory consumed. 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 109 with TraceHistMax 94,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 89 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.0s, OverallIterations: 11, TraceHistogramMax: 94, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 55.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 983 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 866 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3419 IncrementalHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 117 mSDtfsCounter, 3419 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 612 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 57.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=10, InterpolantAutomatonStates: 207, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 301 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 525 ConstructedInterpolants, 0 QuantifiedInterpolants, 1801 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1109 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 9202/12004 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