/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_50-1loop_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 14:12:49,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 14:12:49,963 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 14:12:49,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 14:12:49,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 14:12:49,990 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 14:12:49,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 14:12:49,991 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 14:12:49,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 14:12:49,994 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 14:12:49,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 14:12:49,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 14:12:49,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 14:12:49,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 14:12:49,996 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 14:12:49,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 14:12:49,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 14:12:49,997 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 14:12:49,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 14:12:49,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 14:12:49,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 14:12:49,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 14:12:49,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 14:12:49,999 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 14:12:49,999 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 14:12:49,999 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 14:12:49,999 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 14:12:49,999 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 14:12:49,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 14:12:50,000 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 14:12:50,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 14:12:50,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 14:12:50,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 14:12:50,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 14:12:50,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:12:50,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 14:12:50,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 14:12:50,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 14:12:50,002 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 14:12:50,002 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 14:12:50,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 14:12:50,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 14:12:50,002 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 14:12:50,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 14:12:50,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 14:12:50,003 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 14:12:50,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 14:12:50,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 14:12:50,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 14:12:50,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 14:12:50,236 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 14:12:50,237 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 14:12:50,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-58.i [2023-12-16 14:12:51,224 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 14:12:51,393 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 14:12:51,393 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-58.i [2023-12-16 14:12:51,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073604ee5/96d9347faf914df0b65bf9e13c0a9032/FLAGf8396b6a8 [2023-12-16 14:12:51,428 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073604ee5/96d9347faf914df0b65bf9e13c0a9032 [2023-12-16 14:12:51,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 14:12:51,431 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 14:12:51,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 14:12:51,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 14:12:51,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 14:12:51,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e422f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51, skipping insertion in model container [2023-12-16 14:12:51,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,465 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 14:12:51,583 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_50-1loop_file-58.i[915,928] [2023-12-16 14:12:51,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:12:51,647 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 14:12:51,654 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_50-1loop_file-58.i[915,928] [2023-12-16 14:12:51,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:12:51,690 INFO L206 MainTranslator]: Completed translation [2023-12-16 14:12:51,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51 WrapperNode [2023-12-16 14:12:51,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 14:12:51,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 14:12:51,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 14:12:51,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 14:12:51,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,726 INFO L138 Inliner]: procedures = 27, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 152 [2023-12-16 14:12:51,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 14:12:51,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 14:12:51,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 14:12:51,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 14:12:51,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,752 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 14:12:51,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,765 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 14:12:51,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 14:12:51,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 14:12:51,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 14:12:51,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (1/1) ... [2023-12-16 14:12:51,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:12:51,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 14:12:51,796 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 14:12:51,812 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 14:12:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 14:12:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 14:12:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 14:12:51,826 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 14:12:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 14:12:51,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 14:12:51,907 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 14:12:51,911 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 14:12:52,208 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 14:12:52,236 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 14:12:52,236 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 14:12:52,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:12:52 BoogieIcfgContainer [2023-12-16 14:12:52,237 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 14:12:52,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 14:12:52,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 14:12:52,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 14:12:52,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:12:51" (1/3) ... [2023-12-16 14:12:52,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3e70de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:12:52, skipping insertion in model container [2023-12-16 14:12:52,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:12:51" (2/3) ... [2023-12-16 14:12:52,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3e70de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:12:52, skipping insertion in model container [2023-12-16 14:12:52,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:12:52" (3/3) ... [2023-12-16 14:12:52,242 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-58.i [2023-12-16 14:12:52,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 14:12:52,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 14:12:52,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 14:12:52,288 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;@73d6cb7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 14:12:52,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 14:12:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 38 states have internal predecessors, (53), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-16 14:12:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-16 14:12:52,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:12:52,304 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:52,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:12:52,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:12:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1485306032, now seen corresponding path program 1 times [2023-12-16 14:12:52,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:12:52,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869136258] [2023-12-16 14:12:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:12:52,318 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 14:12:52,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:12:52,319 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 14:12:52,322 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 14:12:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:12:52,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 14:12:52,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:12:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2023-12-16 14:12:52,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:12:52,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:12:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869136258] [2023-12-16 14:12:52,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869136258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:12:52,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:12:52,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 14:12:52,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629642974] [2023-12-16 14:12:52,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:12:52,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 14:12:52,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:12:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 14:12:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 14:12:52,595 INFO L87 Difference]: Start difference. First operand has 64 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 38 states have internal predecessors, (53), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-16 14:12:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:12:52,662 INFO L93 Difference]: Finished difference Result 127 states and 225 transitions. [2023-12-16 14:12:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 14:12:52,664 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 147 [2023-12-16 14:12:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:12:52,671 INFO L225 Difference]: With dead ends: 127 [2023-12-16 14:12:52,671 INFO L226 Difference]: Without dead ends: 62 [2023-12-16 14:12:52,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 146 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 14:12:52,677 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 14:12:52,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 14:12:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-16 14:12:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-16 14:12:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-16 14:12:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 96 transitions. [2023-12-16 14:12:52,718 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 96 transitions. Word has length 147 [2023-12-16 14:12:52,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:12:52,718 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 96 transitions. [2023-12-16 14:12:52,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-16 14:12:52,719 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 96 transitions. [2023-12-16 14:12:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-16 14:12:52,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:12:52,721 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:52,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 14:12:52,921 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 14:12:52,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:12:52,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:12:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash 661725460, now seen corresponding path program 1 times [2023-12-16 14:12:52,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:12:52,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860073839] [2023-12-16 14:12:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:12:52,924 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 14:12:52,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:12:52,925 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 14:12:52,926 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 14:12:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:12:53,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 14:12:53,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:12:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 233 proven. 6 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2023-12-16 14:12:53,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:12:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-12-16 14:12:53,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:12:53,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860073839] [2023-12-16 14:12:53,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860073839] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 14:12:53,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 14:12:53,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 14:12:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514619975] [2023-12-16 14:12:53,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 14:12:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 14:12:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:12:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 14:12:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 14:12:53,618 INFO L87 Difference]: Start difference. First operand 62 states and 96 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (48), 4 states have call predecessors, (48), 4 states have call successors, (48) [2023-12-16 14:12:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:12:54,254 INFO L93 Difference]: Finished difference Result 239 states and 364 transitions. [2023-12-16 14:12:54,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 14:12:54,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (48), 4 states have call predecessors, (48), 4 states have call successors, (48) Word has length 147 [2023-12-16 14:12:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:12:54,257 INFO L225 Difference]: With dead ends: 239 [2023-12-16 14:12:54,257 INFO L226 Difference]: Without dead ends: 178 [2023-12-16 14:12:54,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-16 14:12:54,259 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 159 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 14:12:54,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 284 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 14:12:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-16 14:12:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 169. [2023-12-16 14:12:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 96 states have internal predecessors, (121), 69 states have call successors, (69), 4 states have call predecessors, (69), 4 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 14:12:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 259 transitions. [2023-12-16 14:12:54,278 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 259 transitions. Word has length 147 [2023-12-16 14:12:54,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:12:54,278 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 259 transitions. [2023-12-16 14:12:54,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (48), 4 states have call predecessors, (48), 4 states have call successors, (48) [2023-12-16 14:12:54,279 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 259 transitions. [2023-12-16 14:12:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 14:12:54,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:12:54,280 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:54,288 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 14:12:54,485 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 14:12:54,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:12:54,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:12:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash -257080753, now seen corresponding path program 1 times [2023-12-16 14:12:54,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:12:54,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650814532] [2023-12-16 14:12:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:12:54,487 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 14:12:54,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:12:54,488 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 14:12:54,509 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 (4)] Waiting until timeout for monitored process [2023-12-16 14:12:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:12:54,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 14:12:54,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:12:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 233 proven. 6 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2023-12-16 14:12:54,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:12:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-12-16 14:12:54,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:12:54,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650814532] [2023-12-16 14:12:54,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650814532] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 14:12:54,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 14:12:54,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 14:12:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582723458] [2023-12-16 14:12:54,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 14:12:54,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 14:12:54,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:12:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 14:12:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 14:12:54,755 INFO L87 Difference]: Start difference. First operand 169 states and 259 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-16 14:12:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:12:54,973 INFO L93 Difference]: Finished difference Result 241 states and 365 transitions. [2023-12-16 14:12:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 14:12:54,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 148 [2023-12-16 14:12:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:12:54,975 INFO L225 Difference]: With dead ends: 241 [2023-12-16 14:12:54,975 INFO L226 Difference]: Without dead ends: 136 [2023-12-16 14:12:54,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 14:12:54,977 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 89 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 14:12:54,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 138 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 14:12:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-16 14:12:55,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 66. [2023-12-16 14:12:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-16 14:12:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2023-12-16 14:12:55,011 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 148 [2023-12-16 14:12:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:12:55,013 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2023-12-16 14:12:55,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-16 14:12:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2023-12-16 14:12:55,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-16 14:12:55,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:12:55,017 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:55,027 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 14:12:55,217 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 14:12:55,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:12:55,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:12:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1775322977, now seen corresponding path program 1 times [2023-12-16 14:12:55,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:12:55,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196327799] [2023-12-16 14:12:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:12:55,219 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 14:12:55,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:12:55,220 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 14:12:55,222 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 14:12:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:12:55,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 14:12:55,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 14:13:52,044 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 14:13:52,044 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 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 14:13:53,062 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 [2023-12-16 14:13:53,063 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 (5)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown