/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 23:50:34,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 23:50:35,028 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 23:50:35,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 23:50:35,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 23:50:35,043 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 23:50:35,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 23:50:35,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 23:50:35,044 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 23:50:35,045 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 23:50:35,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 23:50:35,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 23:50:35,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 23:50:35,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 23:50:35,046 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 23:50:35,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 23:50:35,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 23:50:35,047 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 23:50:35,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 23:50:35,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 23:50:35,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 23:50:35,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 23:50:35,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 23:50:35,049 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 23:50:35,049 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 23:50:35,049 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 23:50:35,049 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 23:50:35,050 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 23:50:35,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 23:50:35,050 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 23:50:35,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 23:50:35,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 23:50:35,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 23:50:35,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 23:50:35,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 23:50:35,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 23:50:35,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 23:50:35,052 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 23:50:35,052 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 23:50:35,052 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 23:50:35,052 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 23:50:35,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 23:50:35,057 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 23:50:35,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 23:50:35,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 23:50:35,057 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 23:50:35,057 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 23:50:35,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 23:50:35,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 23:50:35,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 23:50:35,202 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 23:50:35,202 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 23:50:35,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i [2023-12-23 23:50:36,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 23:50:36,444 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 23:50:36,444 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i [2023-12-23 23:50:36,453 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201baccda/c8635f46deb448b184178e2faad09e0d/FLAG284ebb8eb [2023-12-23 23:50:36,466 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201baccda/c8635f46deb448b184178e2faad09e0d [2023-12-23 23:50:36,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 23:50:36,470 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 23:50:36,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 23:50:36,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 23:50:36,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 23:50:36,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fa702a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36, skipping insertion in model container [2023-12-23 23:50:36,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,508 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 23:50:36,624 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i[916,929] [2023-12-23 23:50:36,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 23:50:36,691 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 23:50:36,698 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i[916,929] [2023-12-23 23:50:36,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 23:50:36,771 INFO L206 MainTranslator]: Completed translation [2023-12-23 23:50:36,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36 WrapperNode [2023-12-23 23:50:36,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 23:50:36,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 23:50:36,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 23:50:36,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 23:50:36,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,807 INFO L138 Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 174 [2023-12-23 23:50:36,814 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 23:50:36,814 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 23:50:36,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 23:50:36,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 23:50:36,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,826 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,836 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]. [2023-12-23 23:50:36,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 23:50:36,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 23:50:36,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 23:50:36,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 23:50:36,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (1/1) ... [2023-12-23 23:50:36,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 23:50:36,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 23:50:36,882 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) [2023-12-23 23:50:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 23:50:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 23:50:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 23:50:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 23:50:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 23:50:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 23:50:36,916 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 [2023-12-23 23:50:37,003 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 23:50:37,006 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 23:50:43,307 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 23:50:43,341 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 23:50:43,341 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 23:50:43,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:50:43 BoogieIcfgContainer [2023-12-23 23:50:43,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 23:50:43,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 23:50:43,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 23:50:43,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 23:50:43,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:50:36" (1/3) ... [2023-12-23 23:50:43,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fbbc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:50:43, skipping insertion in model container [2023-12-23 23:50:43,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:50:36" (2/3) ... [2023-12-23 23:50:43,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fbbc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:50:43, skipping insertion in model container [2023-12-23 23:50:43,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:50:43" (3/3) ... [2023-12-23 23:50:43,346 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-98.i [2023-12-23 23:50:43,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 23:50:43,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 23:50:43,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 23:50:43,391 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;@68693f4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 23:50:43,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 23:50:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 45 states have (on average 1.488888888888889) internal successors, (67), 46 states have internal predecessors, (67), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-23 23:50:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-23 23:50:43,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 23:50:43,404 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 23:50:43,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 23:50:43,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 23:50:43,442 INFO L85 PathProgramCache]: Analyzing trace with hash -919665660, now seen corresponding path program 1 times [2023-12-23 23:50:43,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 23:50:43,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780541199] [2023-12-23 23:50:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 23:50:43,454 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 [2023-12-23 23:50:43,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 23:50:43,466 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) [2023-12-23 23:50:43,467 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 [2023-12-23 23:50:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 23:50:43,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 23:50:43,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 23:50:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2023-12-23 23:50:44,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 23:50:44,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 23:50:44,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780541199] [2023-12-23 23:50:44,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780541199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 23:50:44,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 23:50:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 23:50:44,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008536964] [2023-12-23 23:50:44,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 23:50:44,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 23:50:44,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 23:50:44,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 23:50:44,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 23:50:44,064 INFO L87 Difference]: Start difference. First operand has 71 states, 45 states have (on average 1.488888888888889) internal successors, (67), 46 states have internal predecessors, (67), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-23 23:50:48,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:50:48,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 23:50:48,258 INFO L93 Difference]: Finished difference Result 139 states and 247 transitions. [2023-12-23 23:50:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 23:50:48,321 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2023-12-23 23:50:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 23:50:48,326 INFO L225 Difference]: With dead ends: 139 [2023-12-23 23:50:48,326 INFO L226 Difference]: Without dead ends: 69 [2023-12-23 23:50:48,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 23:50:48,330 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-23 23:50:48,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-23 23:50:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-23 23:50:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-23 23:50:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-23 23:50:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 108 transitions. [2023-12-23 23:50:48,358 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 108 transitions. Word has length 148 [2023-12-23 23:50:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 23:50:48,358 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 108 transitions. [2023-12-23 23:50:48,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-23 23:50:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 108 transitions. [2023-12-23 23:50:48,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-23 23:50:48,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 23:50:48,361 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 23:50:48,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 23:50:48,574 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 [2023-12-23 23:50:48,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 23:50:48,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 23:50:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash 251313334, now seen corresponding path program 1 times [2023-12-23 23:50:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 23:50:48,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741431755] [2023-12-23 23:50:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 23:50:48,576 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 [2023-12-23 23:50:48,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 23:50:48,578 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) [2023-12-23 23:50:48,580 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 [2023-12-23 23:50:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 23:50:49,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 23:50:49,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 23:50:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 498 proven. 24 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-23 23:50:49,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 23:50:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-23 23:50:49,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 23:50:49,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741431755] [2023-12-23 23:50:49,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741431755] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 23:50:49,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 23:50:49,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 23:50:49,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60732469] [2023-12-23 23:50:49,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 23:50:49,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 23:50:49,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 23:50:49,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 23:50:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 23:50:49,819 INFO L87 Difference]: Start difference. First operand 69 states and 108 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-23 23:50:54,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:50:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 23:50:54,177 INFO L93 Difference]: Finished difference Result 145 states and 222 transitions. [2023-12-23 23:50:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 23:50:54,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 148 [2023-12-23 23:50:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 23:50:54,248 INFO L225 Difference]: With dead ends: 145 [2023-12-23 23:50:54,248 INFO L226 Difference]: Without dead ends: 77 [2023-12-23 23:50:54,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 23:50:54,249 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 116 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-23 23:50:54,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 176 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-23 23:50:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-23 23:50:54,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2023-12-23 23:50:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-23 23:50:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 109 transitions. [2023-12-23 23:50:54,260 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 109 transitions. Word has length 148 [2023-12-23 23:50:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 23:50:54,260 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 109 transitions. [2023-12-23 23:50:54,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-23 23:50:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 109 transitions. [2023-12-23 23:50:54,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-23 23:50:54,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 23:50:54,262 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 23:50:54,297 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 [2023-12-23 23:50:54,484 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 [2023-12-23 23:50:54,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 23:50:54,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 23:50:54,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1000700281, now seen corresponding path program 1 times [2023-12-23 23:50:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 23:50:54,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616618654] [2023-12-23 23:50:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 23:50:54,486 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 [2023-12-23 23:50:54,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 23:50:54,489 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) [2023-12-23 23:50:54,496 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 [2023-12-23 23:50:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 23:50:54,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 23:50:54,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 23:50:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 391 proven. 96 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-12-23 23:50:58,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 23:50:58,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 23:50:58,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616618654] [2023-12-23 23:50:58,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616618654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 23:50:58,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [974723347] [2023-12-23 23:50:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 23:50:58,884 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 23:50:58,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 23:50:58,929 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 23:50:58,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-23 23:50:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 23:50:59,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 23:50:59,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 23:50:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-23 23:50:59,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 23:50:59,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [974723347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 23:50:59,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 23:50:59,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2023-12-23 23:50:59,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126446176] [2023-12-23 23:50:59,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 23:50:59,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 23:50:59,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 23:50:59,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 23:50:59,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-12-23 23:50:59,365 INFO L87 Difference]: Start difference. First operand 73 states and 109 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-23 23:51:03,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:51:07,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:51:11,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:51:11,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 23:51:11,927 INFO L93 Difference]: Finished difference Result 215 states and 321 transitions. [2023-12-23 23:51:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 23:51:11,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 149 [2023-12-23 23:51:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 23:51:11,929 INFO L225 Difference]: With dead ends: 215 [2023-12-23 23:51:11,929 INFO L226 Difference]: Without dead ends: 143 [2023-12-23 23:51:11,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-12-23 23:51:11,931 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 96 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-23 23:51:11,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 276 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2023-12-23 23:51:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-23 23:51:11,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2023-12-23 23:51:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 90 states have (on average 1.3111111111111111) internal successors, (118), 90 states have internal predecessors, (118), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-23 23:51:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 210 transitions. [2023-12-23 23:51:11,969 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 210 transitions. Word has length 149 [2023-12-23 23:51:11,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 23:51:11,970 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 210 transitions. [2023-12-23 23:51:11,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-23 23:51:11,970 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 210 transitions. [2023-12-23 23:51:11,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-23 23:51:11,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 23:51:11,972 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 23:51:11,999 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 [2023-12-23 23:51:12,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-23 23:51:12,401 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 23:51:12,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 23:51:12,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 23:51:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash -943441979, now seen corresponding path program 1 times [2023-12-23 23:51:12,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 23:51:12,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397422590] [2023-12-23 23:51:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 23:51:12,402 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 [2023-12-23 23:51:12,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 23:51:12,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 23:51:12,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 23:51:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 23:51:12,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 23:51:12,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 23:51:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 391 proven. 96 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-12-23 23:51:15,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 23:51:16,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 23:51:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397422590] [2023-12-23 23:51:16,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397422590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 23:51:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [254844067] [2023-12-23 23:51:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 23:51:16,750 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 23:51:16,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 23:51:16,752 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 23:51:16,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 23:51:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 23:51:18,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 23:51:18,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 23:51:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 372 proven. 51 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-12-23 23:51:20,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 23:51:20,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [254844067] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 23:51:20,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 23:51:20,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 9 [2023-12-23 23:51:20,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991840385] [2023-12-23 23:51:20,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 23:51:20,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-23 23:51:20,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 23:51:20,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-23 23:51:20,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-12-23 23:51:20,470 INFO L87 Difference]: Start difference. First operand 141 states and 210 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-23 23:51:27,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:51:31,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:51:33,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:51:37,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:51:41,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:51:45,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:51:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 23:51:45,997 INFO L93 Difference]: Finished difference Result 376 states and 553 transitions. [2023-12-23 23:51:46,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-23 23:51:46,063 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 149 [2023-12-23 23:51:46,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 23:51:46,065 INFO L225 Difference]: With dead ends: 376 [2023-12-23 23:51:46,065 INFO L226 Difference]: Without dead ends: 236 [2023-12-23 23:51:46,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2023-12-23 23:51:46,072 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 130 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 72 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2023-12-23 23:51:46,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 475 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 261 Invalid, 5 Unknown, 0 Unchecked, 24.9s Time] [2023-12-23 23:51:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-23 23:51:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 197. [2023-12-23 23:51:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 119 states have (on average 1.2352941176470589) internal successors, (147), 119 states have internal predecessors, (147), 69 states have call successors, (69), 8 states have call predecessors, (69), 8 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-23 23:51:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 285 transitions. [2023-12-23 23:51:46,105 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 285 transitions. Word has length 149 [2023-12-23 23:51:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 23:51:46,106 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 285 transitions. [2023-12-23 23:51:46,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-23 23:51:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 285 transitions. [2023-12-23 23:51:46,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-23 23:51:46,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 23:51:46,107 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 23:51:46,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-23 23:51:46,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 23:51:46,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 23:51:46,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 23:51:46,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 23:51:46,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1763177415, now seen corresponding path program 1 times [2023-12-23 23:51:46,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 23:51:46,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404390263] [2023-12-23 23:51:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 23:51:46,539 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 [2023-12-23 23:51:46,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 23:51:46,542 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 23:51:46,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 23:51:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 23:51:47,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 23:51:47,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 23:51:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 456 proven. 45 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2023-12-23 23:51:48,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 23:51:49,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 23:51:49,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404390263] [2023-12-23 23:51:49,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404390263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 23:51:49,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2142606018] [2023-12-23 23:51:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 23:51:49,333 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 23:51:49,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 23:51:49,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 23:51:49,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 23:51:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 23:51:50,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 23:51:50,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 23:51:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 456 proven. 45 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2023-12-23 23:51:51,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 23:51:52,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2142606018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 23:51:52,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 23:51:52,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-23 23:51:52,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116419302] [2023-12-23 23:51:52,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 23:51:52,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 23:51:52,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 23:51:52,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 23:51:52,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-23 23:51:52,718 INFO L87 Difference]: Start difference. First operand 197 states and 285 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-23 23:51:57,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:52:01,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:52:05,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:52:10,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:52:14,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:52:18,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:52:22,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:52:26,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:52:30,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:52:34,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 23:52:34,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 23:52:34,592 INFO L93 Difference]: Finished difference Result 447 states and 648 transitions. [2023-12-23 23:52:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 23:52:34,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 149 [2023-12-23 23:52:34,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 23:52:34,664 INFO L225 Difference]: With dead ends: 447 [2023-12-23 23:52:34,664 INFO L226 Difference]: Without dead ends: 307 [2023-12-23 23:52:34,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-23 23:52:34,665 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 106 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 66 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2023-12-23 23:52:34,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 467 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 206 Invalid, 10 Unknown, 0 Unchecked, 41.6s Time] [2023-12-23 23:52:34,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-23 23:52:34,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 275. [2023-12-23 23:52:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 170 states have (on average 1.2529411764705882) internal successors, (213), 170 states have internal predecessors, (213), 92 states have call successors, (92), 12 states have call predecessors, (92), 12 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-23 23:52:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 397 transitions. [2023-12-23 23:52:34,686 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 397 transitions. Word has length 149 [2023-12-23 23:52:34,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 23:52:34,686 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 397 transitions. [2023-12-23 23:52:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-23 23:52:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 397 transitions. [2023-12-23 23:52:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-23 23:52:34,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 23:52:34,688 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 23:52:34,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 23:52:34,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-23 23:52:35,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 23:52:35,098 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 23:52:35,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 23:52:35,099 INFO L85 PathProgramCache]: Analyzing trace with hash 742109061, now seen corresponding path program 1 times [2023-12-23 23:52:35,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 23:52:35,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388035791] [2023-12-23 23:52:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 23:52:35,099 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 [2023-12-23 23:52:35,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 23:52:35,100 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 23:52:35,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-23 23:52:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 23:52:35,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-23 23:52:35,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 23:52:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 512 proven. 159 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-12-23 23:52:48,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 23:53:03,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 23:53:03,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388035791] [2023-12-23 23:53:03,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388035791] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 23:53:03,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [754792950] [2023-12-23 23:53:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 23:53:03,603 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 23:53:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 23:53:03,604 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 23:53:03,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-23 23:53:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 23:53:07,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-23 23:53:07,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 23:53:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 512 proven. 159 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-12-23 23:53:21,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 23:53:27,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [754792950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 23:53:27,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 23:53:27,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2023-12-23 23:53:27,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927148551] [2023-12-23 23:53:27,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 23:53:27,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-23 23:53:27,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 23:53:27,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-23 23:53:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=978, Unknown=1, NotChecked=0, Total=1190 [2023-12-23 23:53:27,568 INFO L87 Difference]: Start difference. First operand 275 states and 397 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 23 states have internal predecessors, (61), 6 states have call successors, (23), 6 states have call predecessors, (23), 9 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2023-12-23 23:53:37,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:53:43,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:54:05,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:54:09,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:54:14,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:54:19,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:54:32,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:54:35,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:54:42,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:54:47,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:54:51,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:55:02,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:55:16,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:55:17,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:55:38,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:55:53,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:55:57,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:56:12,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:56:17,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:56:29,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:56:30,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:56:36,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:56:51,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:56:55,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:56:57,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:01,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:06,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:07,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:11,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:16,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:39,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:44,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:46,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:48,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:52,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:57:57,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:02,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:07,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:12,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:16,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:20,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:22,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:26,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:31,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:34,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:39,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:44,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:47,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:49,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:51,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:56,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:58:59,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:04,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:09,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:10,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:14,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:19,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:20,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:26,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:31,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:35,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:40,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:44,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:49,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:51,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:54,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 23:59:58,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:03,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:09,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:13,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:17,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:21,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:25,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:29,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:33,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:37,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:41,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:45,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:50,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:00:55,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:01,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:05,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:09,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:13,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:17,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:21,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:25,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:29,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:33,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:37,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:38,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:01:56,525 WARN L293 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 73 DAG size of output: 178 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 00:02:00,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:05,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.51s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:09,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:13,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:18,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:22,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:26,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:31,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:35,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:39,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:41,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:45,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:49,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:53,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:02:58,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:04,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 00:03:08,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:12,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:16,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:20,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 00:03:24,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:28,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:29,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:35,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:36,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:42,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:46,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:47,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:51,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:03:53,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:04:09,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:04:10,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:04:14,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:04:20,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:04:24,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:04:36,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 00:04:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 00:04:42,491 INFO L93 Difference]: Finished difference Result 702 states and 930 transitions. [2023-12-24 00:04:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-24 00:04:42,500 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 23 states have internal predecessors, (61), 6 states have call successors, (23), 6 states have call predecessors, (23), 9 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) Word has length 149 [2023-12-24 00:04:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 00:04:42,505 INFO L225 Difference]: With dead ends: 702 [2023-12-24 00:04:42,505 INFO L226 Difference]: Without dead ends: 562 [2023-12-24 00:04:42,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 156.7s TimeCoverageRelationStatistics Valid=856, Invalid=3045, Unknown=5, NotChecked=0, Total=3906 [2023-12-24 00:04:42,516 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 280 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 67 mSolverCounterUnsat, 92 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 488.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 92 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 535.7s IncrementalHoareTripleChecker+Time [2023-12-24 00:04:42,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 519 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 918 Invalid, 92 Unknown, 0 Unchecked, 535.7s Time] [2023-12-24 00:04:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-12-24 00:04:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 456. [2023-12-24 00:04:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 306 states have (on average 1.2222222222222223) internal successors, (374), 309 states have internal predecessors, (374), 107 states have call successors, (107), 42 states have call predecessors, (107), 42 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-12-24 00:04:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 588 transitions. [2023-12-24 00:04:42,627 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 588 transitions. Word has length 149 [2023-12-24 00:04:42,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 00:04:42,629 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 588 transitions. [2023-12-24 00:04:42,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 23 states have internal predecessors, (61), 6 states have call successors, (23), 6 states have call predecessors, (23), 9 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2023-12-24 00:04:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 588 transitions. [2023-12-24 00:04:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 00:04:42,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 00:04:42,633 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:04:42,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-24 00:04:42,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 00:04:43,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 00:04:43,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 00:04:43,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 00:04:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1422167431, now seen corresponding path program 1 times [2023-12-24 00:04:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 00:04:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106897698] [2023-12-24 00:04:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:04:43,066 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 [2023-12-24 00:04:43,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 00:04:43,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 00:04:43,095 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 (12)] Waiting until timeout for monitored process [2023-12-24 00:04:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:04:44,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-24 00:04:44,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-24 00:05:21,083 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 00:05:21,114 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 [2023-12-24 00:05:21,160 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 00:05:21,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 00:05:21,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 00:05:21,362 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 150 with TraceHistMax 23,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 10 known predicates. [2023-12-24 00:05:21,366 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:05:21,368 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 00:05:21,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 12:05:21 BoogieIcfgContainer [2023-12-24 00:05:21,370 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 00:05:21,370 INFO L158 Benchmark]: Toolchain (without parser) took 884900.40ms. Allocated memory is still 250.6MB. Free memory was 196.5MB in the beginning and 184.6MB in the end (delta: 11.9MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2023-12-24 00:05:21,370 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 208.7MB. Free memory was 157.0MB in the beginning and 156.9MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 00:05:21,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.52ms. Allocated memory is still 250.6MB. Free memory was 196.5MB in the beginning and 179.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 00:05:21,371 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.49ms. Allocated memory is still 250.6MB. Free memory was 179.7MB in the beginning and 177.1MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 00:05:21,371 INFO L158 Benchmark]: Boogie Preprocessor took 43.25ms. Allocated memory is still 250.6MB. Free memory was 177.1MB in the beginning and 172.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 00:05:21,371 INFO L158 Benchmark]: RCFGBuilder took 6483.32ms. Allocated memory is still 250.6MB. Free memory was 172.9MB in the beginning and 143.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-24 00:05:21,371 INFO L158 Benchmark]: TraceAbstraction took 878027.10ms. Allocated memory is still 250.6MB. Free memory was 143.0MB in the beginning and 184.6MB in the end (delta: -41.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 00:05:21,380 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 208.7MB. Free memory was 157.0MB in the beginning and 156.9MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 300.52ms. Allocated memory is still 250.6MB. Free memory was 196.5MB in the beginning and 179.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.49ms. Allocated memory is still 250.6MB. Free memory was 179.7MB in the beginning and 177.1MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.25ms. Allocated memory is still 250.6MB. Free memory was 177.1MB in the beginning and 172.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 6483.32ms. Allocated memory is still 250.6MB. Free memory was 172.9MB in the beginning and 143.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * TraceAbstraction took 878027.10ms. Allocated memory is still 250.6MB. Free memory was 143.0MB in the beginning and 184.6MB in the end (delta: -41.6MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 150 with TraceHistMax 23,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 10 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 878.0s, OverallIterations: 7, TraceHistogramMax: 23, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 763.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 110 mSolverCounterUnknown, 745 SdHoareTripleChecker+Valid, 623.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 728 mSDsluCounter, 2018 SdHoareTripleChecker+Invalid, 575.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1452 mSDsCounter, 241 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1541 IncrementalHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 241 mSolverCounterUnsat, 566 mSDtfsCounter, 1541 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2285 GetRequests, 2162 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 159.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=456occurred in iteration=6, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 183 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 8.8s SatisfiabilityAnalysisTime, 64.0s InterpolantComputationTime, 1488 NumberOfCodeBlocks, 1488 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1625 ConstructedInterpolants, 12 QuantifiedInterpolants, 12227 SizeOfPredicates, 61 NumberOfNonLiveVariables, 2510 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 10433/11132 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