/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/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-99.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 13:49:39,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 13:49:39,824 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 13:49:39,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 13:49:39,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 13:49:39,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 13:49:39,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 13:49:39,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 13:49:39,852 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 13:49:39,852 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 13:49:39,853 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 13:49:39,853 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 13:49:39,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 13:49:39,854 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 13:49:39,854 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 13:49:39,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 13:49:39,855 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 13:49:39,855 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 13:49:39,855 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 13:49:39,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 13:49:39,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 13:49:39,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 13:49:39,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 13:49:39,860 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 13:49:39,863 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 13:49:39,863 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 13:49:39,863 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 13:49:39,864 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 13:49:39,865 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 13:49:39,865 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 13:49:39,866 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 13:49:39,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 13:49:39,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 13:49:39,866 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 13:49:39,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 13:49:39,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 13:49:39,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 13:49:39,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 13:49:39,868 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 13:49:39,868 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 13:49:39,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 13:49:39,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 13:49:39,868 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 13:49:39,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 13:49:39,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 13:49:39,869 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 13:49:39,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 13:49:40,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 13:49:40,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 13:49:40,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 13:49:40,139 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 13:49:40,139 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 13:49:40,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-99.i [2023-12-16 13:49:41,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 13:49:41,759 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 13:49:41,759 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-99.i [2023-12-16 13:49:41,771 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c95e394f9/95c977e47d7e4d96831cb9c937a5abfb/FLAG1d9ed8d95 [2023-12-16 13:49:41,790 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c95e394f9/95c977e47d7e4d96831cb9c937a5abfb [2023-12-16 13:49:41,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 13:49:41,794 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 13:49:41,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 13:49:41,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 13:49:41,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 13:49:41,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:49:41" (1/1) ... [2023-12-16 13:49:41,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574381b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:41, skipping insertion in model container [2023-12-16 13:49:41,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:49:41" (1/1) ... [2023-12-16 13:49:41,837 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 13:49:41,945 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-99.i[916,929] [2023-12-16 13:49:42,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 13:49:42,021 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 13:49:42,034 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-99.i[916,929] [2023-12-16 13:49:42,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 13:49:42,114 INFO L206 MainTranslator]: Completed translation [2023-12-16 13:49:42,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42 WrapperNode [2023-12-16 13:49:42,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 13:49:42,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 13:49:42,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 13:49:42,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 13:49:42,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,169 INFO L138 Inliner]: procedures = 27, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 208 [2023-12-16 13:49:42,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 13:49:42,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 13:49:42,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 13:49:42,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 13:49:42,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,211 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 13:49:42,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 13:49:42,244 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 13:49:42,244 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 13:49:42,244 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 13:49:42,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (1/1) ... [2023-12-16 13:49:42,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 13:49:42,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 13:49:42,279 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 13:49:42,293 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 13:49:42,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 13:49:42,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 13:49:42,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 13:49:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 13:49:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 13:49:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 13:49:42,419 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 13:49:42,421 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 13:49:43,250 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 13:49:43,310 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 13:49:43,310 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 13:49:43,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:49:43 BoogieIcfgContainer [2023-12-16 13:49:43,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 13:49:43,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 13:49:43,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 13:49:43,319 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 13:49:43,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:49:41" (1/3) ... [2023-12-16 13:49:43,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab274c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:49:43, skipping insertion in model container [2023-12-16 13:49:43,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:49:42" (2/3) ... [2023-12-16 13:49:43,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab274c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:49:43, skipping insertion in model container [2023-12-16 13:49:43,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:49:43" (3/3) ... [2023-12-16 13:49:43,321 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-99.i [2023-12-16 13:49:43,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 13:49:43,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 13:49:43,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 13:49:43,373 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;@1ebc7776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 13:49:43,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 13:49:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 56 states have internal predecessors, (84), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-16 13:49:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-16 13:49:43,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:49:43,391 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:49:43,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:49:43,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:49:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash 799801867, now seen corresponding path program 1 times [2023-12-16 13:49:43,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:49:43,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003890107] [2023-12-16 13:49:43,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:49:43,410 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 13:49:43,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:49:43,412 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 13:49:43,415 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 13:49:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:49:43,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 13:49:43,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:49:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-12-16 13:49:43,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:49:43,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:49:43,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003890107] [2023-12-16 13:49:43,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003890107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:49:43,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:49:43,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 13:49:43,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842636435] [2023-12-16 13:49:43,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:49:43,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 13:49:43,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:49:43,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 13:49:43,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 13:49:43,880 INFO L87 Difference]: Start difference. First operand has 83 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 56 states have internal predecessors, (84), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-16 13:49:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:49:44,231 INFO L93 Difference]: Finished difference Result 163 states and 291 transitions. [2023-12-16 13:49:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 13:49:44,241 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 161 [2023-12-16 13:49:44,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:49:44,247 INFO L225 Difference]: With dead ends: 163 [2023-12-16 13:49:44,247 INFO L226 Difference]: Without dead ends: 81 [2023-12-16 13:49:44,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 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 13:49:44,252 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 13:49:44,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 13:49:44,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-16 13:49:44,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-12-16 13:49:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 54 states have internal predecessors, (78), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-16 13:49:44,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 128 transitions. [2023-12-16 13:49:44,292 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 128 transitions. Word has length 161 [2023-12-16 13:49:44,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:49:44,292 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 128 transitions. [2023-12-16 13:49:44,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-16 13:49:44,293 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 128 transitions. [2023-12-16 13:49:44,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 13:49:44,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:49:44,297 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:49:44,310 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 13:49:44,504 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 13:49:44,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:49:44,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:49:44,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2018892084, now seen corresponding path program 1 times [2023-12-16 13:49:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:49:44,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087289520] [2023-12-16 13:49:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:49:44,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:49:44,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:49:44,509 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 13:49:44,509 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 13:49:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:49:44,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 13:49:44,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:49:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-16 13:49:45,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:49:45,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:49:45,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087289520] [2023-12-16 13:49:45,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087289520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:49:45,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:49:45,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 13:49:45,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935109316] [2023-12-16 13:49:45,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:49:45,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 13:49:45,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:49:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 13:49:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 13:49:45,569 INFO L87 Difference]: Start difference. First operand 81 states and 128 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-16 13:49:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:49:46,576 INFO L93 Difference]: Finished difference Result 242 states and 383 transitions. [2023-12-16 13:49:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 13:49:46,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 162 [2023-12-16 13:49:46,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:49:46,597 INFO L225 Difference]: With dead ends: 242 [2023-12-16 13:49:46,597 INFO L226 Difference]: Without dead ends: 162 [2023-12-16 13:49:46,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 13:49:46,599 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 147 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 13:49:46,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 435 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 13:49:46,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-16 13:49:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 127. [2023-12-16 13:49:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 13:49:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 198 transitions. [2023-12-16 13:49:46,628 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 198 transitions. Word has length 162 [2023-12-16 13:49:46,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:49:46,629 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 198 transitions. [2023-12-16 13:49:46,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-16 13:49:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 198 transitions. [2023-12-16 13:49:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-16 13:49:46,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:49:46,631 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:49:46,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 13:49:46,840 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 13:49:46,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:49:46,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:49:46,843 INFO L85 PathProgramCache]: Analyzing trace with hash -810963032, now seen corresponding path program 1 times [2023-12-16 13:49:46,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:49:46,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159685699] [2023-12-16 13:49:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:49:46,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:49:46,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:49:46,845 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 13:49:46,865 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 13:49:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:49:47,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 13:49:47,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:49:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-16 13:49:47,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:49:47,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:49:47,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159685699] [2023-12-16 13:49:47,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159685699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:49:47,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:49:47,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 13:49:47,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084758021] [2023-12-16 13:49:47,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:49:47,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 13:49:47,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:49:47,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 13:49:47,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 13:49:47,387 INFO L87 Difference]: Start difference. First operand 127 states and 198 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-16 13:49:48,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:49:48,431 INFO L93 Difference]: Finished difference Result 242 states and 382 transitions. [2023-12-16 13:49:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 13:49:48,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 163 [2023-12-16 13:49:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:49:48,443 INFO L225 Difference]: With dead ends: 242 [2023-12-16 13:49:48,443 INFO L226 Difference]: Without dead ends: 162 [2023-12-16 13:49:48,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 13:49:48,444 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 143 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 13:49:48,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 489 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 13:49:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-16 13:49:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 128. [2023-12-16 13:49:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 75 states have (on average 1.32) internal successors, (99), 75 states have internal predecessors, (99), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 13:49:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 199 transitions. [2023-12-16 13:49:48,466 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 199 transitions. Word has length 163 [2023-12-16 13:49:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:49:48,467 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 199 transitions. [2023-12-16 13:49:48,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-16 13:49:48,467 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 199 transitions. [2023-12-16 13:49:48,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-16 13:49:48,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:49:48,469 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:49:48,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 13:49:48,677 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 13:49:48,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:49:48,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:49:48,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1292358519, now seen corresponding path program 1 times [2023-12-16 13:49:48,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:49:48,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158170798] [2023-12-16 13:49:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:49:48,680 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 13:49:48,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:49:48,681 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 13:49:48,683 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 13:49:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:49:48,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 13:49:48,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:49:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-16 13:49:49,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:49:49,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:49:49,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158170798] [2023-12-16 13:49:49,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158170798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:49:49,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:49:49,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 13:49:49,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85230884] [2023-12-16 13:49:49,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:49:49,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 13:49:49,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:49:49,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 13:49:49,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 13:49:49,470 INFO L87 Difference]: Start difference. First operand 128 states and 199 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-16 13:49:50,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:49:50,475 INFO L93 Difference]: Finished difference Result 242 states and 381 transitions. [2023-12-16 13:49:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 13:49:50,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 164 [2023-12-16 13:49:50,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:49:50,487 INFO L225 Difference]: With dead ends: 242 [2023-12-16 13:49:50,487 INFO L226 Difference]: Without dead ends: 162 [2023-12-16 13:49:50,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 13:49:50,489 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 125 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 13:49:50,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 424 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 13:49:50,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-16 13:49:50,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2023-12-16 13:49:50,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 76 states have internal predecessors, (100), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 13:49:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 200 transitions. [2023-12-16 13:49:50,510 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 200 transitions. Word has length 164 [2023-12-16 13:49:50,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:49:50,511 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 200 transitions. [2023-12-16 13:49:50,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-16 13:49:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 200 transitions. [2023-12-16 13:49:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-16 13:49:50,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:49:50,513 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:49:50,524 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 13:49:50,722 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 13:49:50,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:49:50,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:49:50,723 INFO L85 PathProgramCache]: Analyzing trace with hash 474710069, now seen corresponding path program 1 times [2023-12-16 13:49:50,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:49:50,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688088689] [2023-12-16 13:49:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:49:50,724 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 13:49:50,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:49:50,725 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 13:49:50,727 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 13:49:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:49:51,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 13:49:51,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:49:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-12-16 13:49:51,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:49:51,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:49:51,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688088689] [2023-12-16 13:49:51,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688088689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:49:51,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:49:51,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 13:49:51,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415620619] [2023-12-16 13:49:51,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:49:51,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 13:49:51,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:49:51,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 13:49:51,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 13:49:51,129 INFO L87 Difference]: Start difference. First operand 129 states and 200 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-16 13:49:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:49:52,356 INFO L93 Difference]: Finished difference Result 310 states and 465 transitions. [2023-12-16 13:49:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 13:49:52,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 164 [2023-12-16 13:49:52,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:49:52,358 INFO L225 Difference]: With dead ends: 310 [2023-12-16 13:49:52,359 INFO L226 Difference]: Without dead ends: 230 [2023-12-16 13:49:52,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2023-12-16 13:49:52,360 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 268 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 13:49:52,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 705 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 13:49:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-16 13:49:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 155. [2023-12-16 13:49:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 99 states have internal predecessors, (126), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 13:49:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 226 transitions. [2023-12-16 13:49:52,399 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 226 transitions. Word has length 164 [2023-12-16 13:49:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:49:52,401 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 226 transitions. [2023-12-16 13:49:52,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-16 13:49:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 226 transitions. [2023-12-16 13:49:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-16 13:49:52,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:49:52,412 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:49:52,428 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 13:49:52,623 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 13:49:52,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:49:52,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:49:52,624 INFO L85 PathProgramCache]: Analyzing trace with hash 978814120, now seen corresponding path program 1 times [2023-12-16 13:49:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:49:52,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773336402] [2023-12-16 13:49:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:49:52,625 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 13:49:52,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:49:52,626 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 13:49:52,652 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 13:49:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:49:52,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 13:49:52,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:49:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-16 13:49:53,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:49:53,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:49:53,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773336402] [2023-12-16 13:49:53,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773336402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:49:53,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:49:53,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 13:49:53,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306887161] [2023-12-16 13:49:53,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:49:53,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 13:49:53,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:49:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 13:49:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 13:49:53,094 INFO L87 Difference]: Start difference. First operand 155 states and 226 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-16 13:49:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:49:53,510 INFO L93 Difference]: Finished difference Result 359 states and 526 transitions. [2023-12-16 13:49:53,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 13:49:53,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 165 [2023-12-16 13:49:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:49:53,519 INFO L225 Difference]: With dead ends: 359 [2023-12-16 13:49:53,519 INFO L226 Difference]: Without dead ends: 257 [2023-12-16 13:49:53,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 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 13:49:53,524 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 38 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 13:49:53,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 250 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 13:49:53,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-16 13:49:53,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-12-16 13:49:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 171 states have (on average 1.304093567251462) internal successors, (223), 171 states have internal predecessors, (223), 75 states have call successors, (75), 8 states have call predecessors, (75), 8 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-16 13:49:53,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 373 transitions. [2023-12-16 13:49:53,566 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 373 transitions. Word has length 165 [2023-12-16 13:49:53,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:49:53,567 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 373 transitions. [2023-12-16 13:49:53,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-16 13:49:53,567 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 373 transitions. [2023-12-16 13:49:53,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-16 13:49:53,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:49:53,568 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:49:53,583 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 13:49:53,783 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 13:49:53,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:49:53,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:49:53,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1727862967, now seen corresponding path program 1 times [2023-12-16 13:49:53,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:49:53,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805748973] [2023-12-16 13:49:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:49:53,785 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 13:49:53,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:49:53,786 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 13:49:53,788 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 13:49:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:49:54,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-16 13:49:54,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 13:50:36,322 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 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 13:50:36,322 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 13:50:37,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 13:50:37,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown