/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-27.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 14:09:31,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 14:09:31,857 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 14:09:31,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 14:09:31,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 14:09:31,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 14:09:31,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 14:09:31,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 14:09:31,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 14:09:31,878 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 14:09:31,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 14:09:31,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 14:09:31,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 14:09:31,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 14:09:31,880 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 14:09:31,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 14:09:31,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 14:09:31,881 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 14:09:31,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 14:09:31,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 14:09:31,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 14:09:31,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 14:09:31,882 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 14:09:31,882 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 14:09:31,883 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 14:09:31,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 14:09:31,883 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 14:09:31,883 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 14:09:31,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 14:09:31,884 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 14:09:31,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 14:09:31,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 14:09:31,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 14:09:31,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 14:09:31,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:09:31,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 14:09:31,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 14:09:31,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 14:09:31,886 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 14:09:31,886 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 14:09:31,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 14:09:31,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 14:09:31,887 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 14:09:31,887 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 14:09:31,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 14:09:31,888 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 14:09:31,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 14:09:32,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 14:09:32,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 14:09:32,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 14:09:32,068 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 14:09:32,068 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 14:09:32,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-27.i [2023-12-16 14:09:33,147 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 14:09:33,314 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 14:09:33,315 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-27.i [2023-12-16 14:09:33,320 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f571a3d/d1210ebbb6404f7abf8b9ada6bc871cc/FLAG0c59401bc [2023-12-16 14:09:33,330 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f571a3d/d1210ebbb6404f7abf8b9ada6bc871cc [2023-12-16 14:09:33,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 14:09:33,332 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 14:09:33,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 14:09:33,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 14:09:33,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 14:09:33,340 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f38c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33, skipping insertion in model container [2023-12-16 14:09:33,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,362 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 14:09:33,477 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-27.i[915,928] [2023-12-16 14:09:33,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:09:33,522 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 14:09:33,533 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-27.i[915,928] [2023-12-16 14:09:33,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:09:33,572 INFO L206 MainTranslator]: Completed translation [2023-12-16 14:09:33,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33 WrapperNode [2023-12-16 14:09:33,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 14:09:33,577 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 14:09:33,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 14:09:33,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 14:09:33,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,608 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 141 [2023-12-16 14:09:33,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 14:09:33,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 14:09:33,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 14:09:33,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 14:09:33,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,620 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,630 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 14:09:33,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,640 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 14:09:33,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 14:09:33,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 14:09:33,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 14:09:33,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (1/1) ... [2023-12-16 14:09:33,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:09:33,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 14:09:33,674 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 14:09:33,676 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 14:09:33,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 14:09:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 14:09:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 14:09:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 14:09:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 14:09:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 14:09:33,780 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 14:09:33,783 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 14:09:38,772 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 14:09:38,814 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 14:09:38,814 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 14:09:38,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:09:38 BoogieIcfgContainer [2023-12-16 14:09:38,815 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 14:09:38,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 14:09:38,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 14:09:38,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 14:09:38,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:09:33" (1/3) ... [2023-12-16 14:09:38,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a91f251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:09:38, skipping insertion in model container [2023-12-16 14:09:38,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:09:33" (2/3) ... [2023-12-16 14:09:38,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a91f251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:09:38, skipping insertion in model container [2023-12-16 14:09:38,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:09:38" (3/3) ... [2023-12-16 14:09:38,821 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-27.i [2023-12-16 14:09:38,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 14:09:38,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 14:09:38,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 14:09:38,868 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;@2dec2922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 14:09:38,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 14:09:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 35 states have internal predecessors, (49), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 14:09:38,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 14:09:38,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:09:38,882 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:38,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:09:38,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:09:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1777127012, now seen corresponding path program 1 times [2023-12-16 14:09:38,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:09:38,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136999415] [2023-12-16 14:09:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:09:38,896 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 14:09:38,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:09:38,932 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 14:09:38,987 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 14:09:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:09:39,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 14:09:39,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:09:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-16 14:09:39,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:09:39,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:09:39,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136999415] [2023-12-16 14:09:39,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136999415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:09:39,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:09:39,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 14:09:39,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553763852] [2023-12-16 14:09:39,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:09:39,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 14:09:39,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:09:39,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 14:09:39,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 14:09:39,406 INFO L87 Difference]: Start difference. First operand has 57 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 35 states have internal predecessors, (49), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 14:09:43,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:09:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:09:43,634 INFO L93 Difference]: Finished difference Result 113 states and 197 transitions. [2023-12-16 14:09:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 14:09:43,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2023-12-16 14:09:43,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:09:43,643 INFO L225 Difference]: With dead ends: 113 [2023-12-16 14:09:43,643 INFO L226 Difference]: Without dead ends: 55 [2023-12-16 14:09:43,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 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 14:09:43,648 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-16 14:09:43,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-16 14:09:43,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-16 14:09:43,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-16 14:09:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 14:09:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 84 transitions. [2023-12-16 14:09:43,677 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 84 transitions. Word has length 124 [2023-12-16 14:09:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:09:43,677 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 84 transitions. [2023-12-16 14:09:43,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 14:09:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2023-12-16 14:09:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 14:09:43,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:09:43,680 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:43,690 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 14:09:43,881 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 14:09:43,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:09:43,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:09:43,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2052413844, now seen corresponding path program 1 times [2023-12-16 14:09:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:09:43,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003552808] [2023-12-16 14:09:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:09:43,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:09:43,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:09:43,889 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 14:09:43,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 14:09:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:09:44,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 14:09:44,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:09:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-16 14:09:44,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:09:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 14:09:44,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:09:44,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003552808] [2023-12-16 14:09:44,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003552808] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 14:09:44,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 14:09:44,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-16 14:09:44,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888832661] [2023-12-16 14:09:44,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:09:44,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 14:09:44,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:09:44,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 14:09:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 14:09:44,814 INFO L87 Difference]: Start difference. First operand 55 states and 84 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 14:09:49,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:09:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:09:49,874 INFO L93 Difference]: Finished difference Result 113 states and 170 transitions. [2023-12-16 14:09:49,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 14:09:49,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 124 [2023-12-16 14:09:49,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:09:49,876 INFO L225 Difference]: With dead ends: 113 [2023-12-16 14:09:49,876 INFO L226 Difference]: Without dead ends: 59 [2023-12-16 14:09:49,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 14:09:49,878 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 48 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-16 14:09:49,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 106 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-16 14:09:49,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-16 14:09:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-16 14:09:49,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 14:09:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2023-12-16 14:09:49,886 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 124 [2023-12-16 14:09:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:09:49,887 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2023-12-16 14:09:49,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 14:09:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2023-12-16 14:09:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 14:09:49,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:09:49,890 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:49,903 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 14:09:50,090 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 14:09:50,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:09:50,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:09:50,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1015393434, now seen corresponding path program 1 times [2023-12-16 14:09:50,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:09:50,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589882390] [2023-12-16 14:09:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:09:50,092 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 14:09:50,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:09:50,094 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 14:09:50,095 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 14:09:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:09:50,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 14:09:50,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:09:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 14:09:50,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:09:50,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:09:50,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589882390] [2023-12-16 14:09:50,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589882390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:09:50,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:09:50,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 14:09:50,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756650774] [2023-12-16 14:09:50,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:09:50,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 14:09:50,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:09:50,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 14:09:50,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 14:09:50,862 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 14:09:54,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:09:57,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:09:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:09:57,141 INFO L93 Difference]: Finished difference Result 175 states and 256 transitions. [2023-12-16 14:09:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 14:09:57,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2023-12-16 14:09:57,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:09:57,143 INFO L225 Difference]: With dead ends: 175 [2023-12-16 14:09:57,143 INFO L226 Difference]: Without dead ends: 117 [2023-12-16 14:09:57,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 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 14:09:57,144 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 15 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-16 14:09:57,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 147 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-16 14:09:57,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-16 14:09:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2023-12-16 14:09:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 14:09:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 164 transitions. [2023-12-16 14:09:57,171 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 164 transitions. Word has length 125 [2023-12-16 14:09:57,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:09:57,171 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 164 transitions. [2023-12-16 14:09:57,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 14:09:57,172 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 164 transitions. [2023-12-16 14:09:57,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 14:09:57,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:09:57,194 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:57,206 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 14:09:57,395 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 14:09:57,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:09:57,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:09:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1659473440, now seen corresponding path program 1 times [2023-12-16 14:09:57,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:09:57,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533678856] [2023-12-16 14:09:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:09:57,397 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 14:09:57,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:09:57,402 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 14:09:57,410 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 14:09:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:09:57,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 14:09:57,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:10:20,017 WARN L293 SmtUtils]: Spent 11.20s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-16 14:10:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 358 proven. 72 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-12-16 14:10:35,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 14:10:53,883 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 14:10:53,923 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 14:10:54,763 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 14:10:54,772 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 [2023-12-16 14:10:54,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-16 14:10:54,963 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 14:10:54,964 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 127 with TraceHistMax 20,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 11 known predicates. [2023-12-16 14:10:54,967 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-16 14:10:54,969 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 14:10:54,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:10:54 BoogieIcfgContainer [2023-12-16 14:10:54,970 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 14:10:54,971 INFO L158 Benchmark]: Toolchain (without parser) took 81638.37ms. Allocated memory is still 239.1MB. Free memory was 190.4MB in the beginning and 125.1MB in the end (delta: 65.3MB). Peak memory consumption was 65.7MB. Max. memory is 8.0GB. [2023-12-16 14:10:54,971 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 164.6MB. Free memory is still 117.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 14:10:54,971 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.32ms. Allocated memory is still 239.1MB. Free memory was 190.4MB in the beginning and 176.1MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 14:10:54,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.16ms. Allocated memory is still 239.1MB. Free memory was 176.1MB in the beginning and 173.6MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 14:10:54,971 INFO L158 Benchmark]: Boogie Preprocessor took 35.06ms. Allocated memory is still 239.1MB. Free memory was 173.6MB in the beginning and 170.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 14:10:54,972 INFO L158 Benchmark]: RCFGBuilder took 5170.49ms. Allocated memory is still 239.1MB. Free memory was 170.5MB in the beginning and 146.0MB in the end (delta: 24.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-16 14:10:54,972 INFO L158 Benchmark]: TraceAbstraction took 76154.04ms. Allocated memory is still 239.1MB. Free memory was 145.3MB in the beginning and 125.1MB in the end (delta: 20.3MB). Peak memory consumption was 20.6MB. Max. memory is 8.0GB. [2023-12-16 14:10:54,973 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 164.6MB. Free memory is still 117.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 243.32ms. Allocated memory is still 239.1MB. Free memory was 190.4MB in the beginning and 176.1MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.16ms. Allocated memory is still 239.1MB. Free memory was 176.1MB in the beginning and 173.6MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.06ms. Allocated memory is still 239.1MB. Free memory was 173.6MB in the beginning and 170.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 5170.49ms. Allocated memory is still 239.1MB. Free memory was 170.5MB in the beginning and 146.0MB in the end (delta: 24.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 76154.04ms. Allocated memory is still 239.1MB. Free memory was 145.3MB in the beginning and 125.1MB in the end (delta: 20.3MB). Peak memory consumption was 20.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 127 with TraceHistMax 20,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 76.1s, OverallIterations: 4, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 15.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 334 SdHoareTripleChecker+Invalid, 15.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 103 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 231 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 493 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=3, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 373 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 493 ConstructedInterpolants, 0 QuantifiedInterpolants, 880 SizeOfPredicates, 4 NumberOfNonLiveVariables, 626 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 3010/3040 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown