/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_floatingpointinfluence_no-floats_file-78.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 20:33:07,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 20:33:07,269 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 20:33:07,272 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 20:33:07,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 20:33:07,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 20:33:07,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 20:33:07,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 20:33:07,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 20:33:07,287 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 20:33:07,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 20:33:07,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 20:33:07,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 20:33:07,289 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 20:33:07,289 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 20:33:07,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 20:33:07,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 20:33:07,290 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 20:33:07,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 20:33:07,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 20:33:07,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 20:33:07,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 20:33:07,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 20:33:07,291 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 20:33:07,292 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 20:33:07,292 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 20:33:07,292 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 20:33:07,292 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 20:33:07,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 20:33:07,293 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 20:33:07,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 20:33:07,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 20:33:07,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 20:33:07,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 20:33:07,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 20:33:07,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 20:33:07,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 20:33:07,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 20:33:07,295 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 20:33:07,295 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 20:33:07,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 20:33:07,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 20:33:07,296 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 20:33:07,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 20:33:07,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 20:33:07,296 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 20:33:07,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 20:33:07,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 20:33:07,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 20:33:07,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 20:33:07,508 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 20:33:07,509 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 20:33:07,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-78.i [2023-12-23 20:33:08,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 20:33:08,750 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 20:33:08,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-78.i [2023-12-23 20:33:08,757 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a3cb1cf3/4cd4f38d4cef44d69990f520b058834f/FLAG05e620202 [2023-12-23 20:33:08,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a3cb1cf3/4cd4f38d4cef44d69990f520b058834f [2023-12-23 20:33:08,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 20:33:08,776 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 20:33:08,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 20:33:08,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 20:33:08,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 20:33:08,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:08,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663b0d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08, skipping insertion in model container [2023-12-23 20:33:08,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:08,806 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 20:33:08,900 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_floatingpointinfluence_no-floats_file-78.i[916,929] [2023-12-23 20:33:08,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 20:33:08,934 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 20:33:08,944 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_floatingpointinfluence_no-floats_file-78.i[916,929] [2023-12-23 20:33:08,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 20:33:08,986 INFO L206 MainTranslator]: Completed translation [2023-12-23 20:33:08,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08 WrapperNode [2023-12-23 20:33:08,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 20:33:08,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 20:33:08,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 20:33:08,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 20:33:08,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,019 INFO L138 Inliner]: procedures = 27, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 97 [2023-12-23 20:33:09,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 20:33:09,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 20:33:09,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 20:33:09,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 20:33:09,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,039 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 20:33:09,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,045 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 20:33:09,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 20:33:09,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 20:33:09,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 20:33:09,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (1/1) ... [2023-12-23 20:33:09,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 20:33:09,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 20:33:09,082 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 20:33:09,105 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 20:33:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 20:33:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 20:33:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 20:33:09,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 20:33:09,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 20:33:09,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 20:33:09,171 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 20:33:09,173 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 20:33:14,076 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 20:33:14,135 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 20:33:14,135 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 20:33:14,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:33:14 BoogieIcfgContainer [2023-12-23 20:33:14,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 20:33:14,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 20:33:14,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 20:33:14,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 20:33:14,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:33:08" (1/3) ... [2023-12-23 20:33:14,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174b7ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:33:14, skipping insertion in model container [2023-12-23 20:33:14,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:33:08" (2/3) ... [2023-12-23 20:33:14,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174b7ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:33:14, skipping insertion in model container [2023-12-23 20:33:14,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:33:14" (3/3) ... [2023-12-23 20:33:14,142 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-78.i [2023-12-23 20:33:14,191 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 20:33:14,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 20:33:14,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 20:33:14,283 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;@663c236b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 20:33:14,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 20:33:14,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-23 20:33:14,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-23 20:33:14,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:33:14,301 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:14,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:33:14,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:33:14,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1407298392, now seen corresponding path program 1 times [2023-12-23 20:33:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:33:14,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346761462] [2023-12-23 20:33:14,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:33:14,315 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 20:33:14,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:33:14,331 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 20:33:14,337 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 20:33:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:33:14,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 20:33:14,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:33:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-23 20:33:14,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:33:14,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:33:14,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346761462] [2023-12-23 20:33:14,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346761462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:33:14,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:33:14,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 20:33:14,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68484962] [2023-12-23 20:33:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:33:14,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 20:33:14,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:33:14,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 20:33:14,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 20:33:14,556 INFO L87 Difference]: Start difference. First operand has 42 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-23 20:33:16,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:33:16,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:33:16,612 INFO L93 Difference]: Finished difference Result 81 states and 140 transitions. [2023-12-23 20:33:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 20:33:16,651 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2023-12-23 20:33:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:33:16,657 INFO L225 Difference]: With dead ends: 81 [2023-12-23 20:33:16,657 INFO L226 Difference]: Without dead ends: 40 [2023-12-23 20:33:16,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 87 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 20:33:16,661 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 20:33:16,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 20:33:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-23 20:33:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-23 20:33:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-23 20:33:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2023-12-23 20:33:16,726 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 59 transitions. Word has length 88 [2023-12-23 20:33:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:33:16,727 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 59 transitions. [2023-12-23 20:33:16,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-23 20:33:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 59 transitions. [2023-12-23 20:33:16,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-23 20:33:16,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:33:16,748 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:16,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 20:33:16,948 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 20:33:16,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:33:16,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:33:16,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1413022232, now seen corresponding path program 1 times [2023-12-23 20:33:16,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:33:16,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716302271] [2023-12-23 20:33:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:33:16,951 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 20:33:16,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:33:16,953 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 20:33:16,956 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 20:33:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:33:17,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 20:33:17,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:33:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-23 20:33:17,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:33:17,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:33:17,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716302271] [2023-12-23 20:33:17,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716302271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:33:17,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:33:17,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 20:33:17,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51558675] [2023-12-23 20:33:17,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:33:17,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 20:33:17,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:33:17,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 20:33:17,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 20:33:17,540 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:33:19,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:33:21,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:33:22,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:33:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:33:22,665 INFO L93 Difference]: Finished difference Result 118 states and 175 transitions. [2023-12-23 20:33:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 20:33:22,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 88 [2023-12-23 20:33:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:33:22,667 INFO L225 Difference]: With dead ends: 118 [2023-12-23 20:33:22,668 INFO L226 Difference]: Without dead ends: 79 [2023-12-23 20:33:22,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 20:33:22,669 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 12 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-23 20:33:22,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 155 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-23 20:33:22,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-23 20:33:22,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2023-12-23 20:33:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-23 20:33:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2023-12-23 20:33:22,685 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 112 transitions. Word has length 88 [2023-12-23 20:33:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:33:22,685 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 112 transitions. [2023-12-23 20:33:22,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:33:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 112 transitions. [2023-12-23 20:33:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-23 20:33:22,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:33:22,687 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:22,696 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 20:33:22,893 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 20:33:22,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:33:22,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:33:22,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1412962650, now seen corresponding path program 1 times [2023-12-23 20:33:22,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:33:22,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688947021] [2023-12-23 20:33:22,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:33:22,895 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 20:33:22,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:33:22,897 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 20:33:22,899 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 20:33:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 20:33:23,045 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-23 20:33:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 20:33:23,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-23 20:33:23,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1463312027] [2023-12-23 20:33:23,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:33:23,180 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 20:33:23,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 20:33:23,221 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 20:33:23,226 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 20:33:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:33:23,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-23 20:33:23,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:34:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-23 20:34:08,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:34:08,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:34:08,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688947021] [2023-12-23 20:34:08,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-23 20:34:08,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1463312027] [2023-12-23 20:34:08,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1463312027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:34:08,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:34:08,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-23 20:34:08,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872059124] [2023-12-23 20:34:08,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:34:08,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 20:34:08,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:34:08,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 20:34:08,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-23 20:34:08,328 INFO L87 Difference]: Start difference. First operand 76 states and 112 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:34:32,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:34:37,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:34:39,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:34:43,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:34:43,392 INFO L93 Difference]: Finished difference Result 117 states and 160 transitions. [2023-12-23 20:34:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-23 20:34:43,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 88 [2023-12-23 20:34:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:34:43,415 INFO L225 Difference]: With dead ends: 117 [2023-12-23 20:34:43,415 INFO L226 Difference]: Without dead ends: 115 [2023-12-23 20:34:43,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-23 20:34:43,416 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 61 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2023-12-23 20:34:43,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 223 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 26.4s Time] [2023-12-23 20:34:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-23 20:34:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2023-12-23 20:34:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 70 states have internal predecessors, (82), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 20:34:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 150 transitions. [2023-12-23 20:34:43,438 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 150 transitions. Word has length 88 [2023-12-23 20:34:43,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:34:43,438 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 150 transitions. [2023-12-23 20:34:43,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:34:43,439 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 150 transitions. [2023-12-23 20:34:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-23 20:34:43,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:34:43,440 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:34:43,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-23 20:34:43,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-23 20:34:43,850 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 20:34:43,851 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:34:43,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:34:43,851 INFO L85 PathProgramCache]: Analyzing trace with hash -732904280, now seen corresponding path program 1 times [2023-12-23 20:34:43,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:34:43,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294847147] [2023-12-23 20:34:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:34:43,852 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 20:34:43,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:34:43,853 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 20:34:43,871 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 20:34:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:34:43,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 20:34:43,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:34:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 165 proven. 27 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-23 20:34:44,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 20:34:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-23 20:34:56,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:34:56,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294847147] [2023-12-23 20:34:56,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294847147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 20:34:56,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 20:34:56,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-23 20:34:56,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585689357] [2023-12-23 20:34:56,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 20:34:56,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 20:34:56,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:34:56,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 20:34:56,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-23 20:34:56,918 INFO L87 Difference]: Start difference. First operand 107 states and 150 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-23 20:35:03,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:35:04,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:35:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:35:04,885 INFO L93 Difference]: Finished difference Result 220 states and 301 transitions. [2023-12-23 20:35:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 20:35:04,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 88 [2023-12-23 20:35:04,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:35:04,915 INFO L225 Difference]: With dead ends: 220 [2023-12-23 20:35:04,915 INFO L226 Difference]: Without dead ends: 114 [2023-12-23 20:35:04,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-23 20:35:04,917 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-23 20:35:04,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 72 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-23 20:35:04,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-23 20:35:04,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2023-12-23 20:35:04,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 67 states have internal predecessors, (74), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 20:35:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 142 transitions. [2023-12-23 20:35:04,932 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 142 transitions. Word has length 88 [2023-12-23 20:35:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:35:04,932 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 142 transitions. [2023-12-23 20:35:04,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-23 20:35:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 142 transitions. [2023-12-23 20:35:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-23 20:35:04,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:35:04,934 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:35:04,943 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 20:35:05,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 20:35:05,141 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:35:05,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:35:05,141 INFO L85 PathProgramCache]: Analyzing trace with hash 801909796, now seen corresponding path program 1 times [2023-12-23 20:35:05,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:35:05,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887329997] [2023-12-23 20:35:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:35:05,142 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 20:35:05,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:35:05,143 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 20:35:05,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 20:35:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 20:35:05,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-23 20:35:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 20:35:05,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-23 20:35:05,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1832722625] [2023-12-23 20:35:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:35:05,378 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 20:35:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 20:35:05,379 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 20:35:05,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-23 20:35:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:35:05,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-23 20:35:05,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:35:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-23 20:35:44,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:35:44,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:35:44,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887329997] [2023-12-23 20:35:44,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-23 20:35:44,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1832722625] [2023-12-23 20:35:44,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1832722625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:35:44,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:35:44,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-23 20:35:44,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518032455] [2023-12-23 20:35:44,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:35:44,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 20:35:44,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:35:44,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 20:35:44,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-23 20:35:44,859 INFO L87 Difference]: Start difference. First operand 106 states and 142 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:35:52,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:35:55,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:36:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:36:00,805 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2023-12-23 20:36:00,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 20:36:00,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 89 [2023-12-23 20:36:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:36:00,816 INFO L225 Difference]: With dead ends: 110 [2023-12-23 20:36:00,816 INFO L226 Difference]: Without dead ends: 108 [2023-12-23 20:36:00,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-23 20:36:00,818 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 27 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-23 20:36:00,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 201 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2023-12-23 20:36:00,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-23 20:36:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2023-12-23 20:36:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 65 states have (on average 1.123076923076923) internal successors, (73), 67 states have internal predecessors, (73), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 20:36:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2023-12-23 20:36:00,828 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 141 transitions. Word has length 89 [2023-12-23 20:36:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:36:00,829 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 141 transitions. [2023-12-23 20:36:00,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:36:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 141 transitions. [2023-12-23 20:36:00,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-23 20:36:00,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:36:00,830 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:00,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-23 20:36:01,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-23 20:36:01,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 20:36:01,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:36:01,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:36:01,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1571482232, now seen corresponding path program 1 times [2023-12-23 20:36:01,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:36:01,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101480465] [2023-12-23 20:36:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:36:01,249 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 20:36:01,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:36:01,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 20:36:01,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-23 20:36:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:36:01,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 20:36:01,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:36:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-23 20:36:01,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:36:01,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:36:01,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101480465] [2023-12-23 20:36:01,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101480465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:36:01,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:36:01,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 20:36:01,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951705529] [2023-12-23 20:36:01,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:36:01,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 20:36:01,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:36:01,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 20:36:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 20:36:01,412 INFO L87 Difference]: Start difference. First operand 106 states and 141 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:36:02,982 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 20:36:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:36:03,025 INFO L93 Difference]: Finished difference Result 149 states and 201 transitions. [2023-12-23 20:36:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 20:36:03,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 89 [2023-12-23 20:36:03,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:36:03,061 INFO L225 Difference]: With dead ends: 149 [2023-12-23 20:36:03,062 INFO L226 Difference]: Without dead ends: 106 [2023-12-23 20:36:03,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 20:36:03,063 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-23 20:36:03,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 95 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-23 20:36:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-23 20:36:03,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-23 20:36:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 67 states have internal predecessors, (72), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 20:36:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 140 transitions. [2023-12-23 20:36:03,076 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 140 transitions. Word has length 89 [2023-12-23 20:36:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:36:03,077 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 140 transitions. [2023-12-23 20:36:03,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:36:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 140 transitions. [2023-12-23 20:36:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-23 20:36:03,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:36:03,078 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:03,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-23 20:36:03,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 20:36:03,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:36:03,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:36:03,288 INFO L85 PathProgramCache]: Analyzing trace with hash 203525130, now seen corresponding path program 1 times [2023-12-23 20:36:03,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:36:03,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366660132] [2023-12-23 20:36:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:36:03,289 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 20:36:03,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:36:03,290 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 20:36:03,305 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 20:36:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 20:36:03,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-23 20:36:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 20:36:03,541 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-23 20:36:03,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1508574470] [2023-12-23 20:36:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:36:03,541 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 20:36:03,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 20:36:03,553 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 20:36:03,572 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 20:36:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:36:03,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-23 20:36:03,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:37:02,268 WARN L293 SmtUtils]: Spent 15.07s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 20:37:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-23 20:37:26,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:37:26,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:37:26,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366660132] [2023-12-23 20:37:26,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-23 20:37:26,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1508574470] [2023-12-23 20:37:26,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1508574470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:37:26,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:37:26,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-23 20:37:26,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124463102] [2023-12-23 20:37:26,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:37:26,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 20:37:26,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:37:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 20:37:26,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 20:37:26,004 INFO L87 Difference]: Start difference. First operand 106 states and 140 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:37:40,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:37:47,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:38:13,893 WARN L293 SmtUtils]: Spent 15.96s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 20:38:17,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:38:39,462 WARN L293 SmtUtils]: Spent 17.77s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 20:38:41,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:38:43,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:38:47,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:38:51,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:39:00,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:39:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:39:01,019 INFO L93 Difference]: Finished difference Result 142 states and 180 transitions. [2023-12-23 20:39:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-23 20:39:01,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 89 [2023-12-23 20:39:01,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:39:01,063 INFO L225 Difference]: With dead ends: 142 [2023-12-23 20:39:01,063 INFO L226 Difference]: Without dead ends: 140 [2023-12-23 20:39:01,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 92.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-23 20:39:01,064 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 76 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.8s IncrementalHoareTripleChecker+Time [2023-12-23 20:39:01,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 325 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 40.8s Time] [2023-12-23 20:39:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-23 20:39:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2023-12-23 20:39:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.144578313253012) internal successors, (95), 86 states have internal predecessors, (95), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-23 20:39:01,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 167 transitions. [2023-12-23 20:39:01,077 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 167 transitions. Word has length 89 [2023-12-23 20:39:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:39:01,077 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 167 transitions. [2023-12-23 20:39:01,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:39:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 167 transitions. [2023-12-23 20:39:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-23 20:39:01,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:39:01,079 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:01,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-23 20:39:01,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-23 20:39:01,493 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 [2023-12-23 20:39:01,494 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:39:01,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:39:01,494 INFO L85 PathProgramCache]: Analyzing trace with hash 203584712, now seen corresponding path program 1 times [2023-12-23 20:39:01,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:39:01,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721020291] [2023-12-23 20:39:01,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:39:01,495 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 20:39:01,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:39:01,496 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) [2023-12-23 20:39:01,497 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 [2023-12-23 20:39:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:39:01,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 20:39:01,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:39:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-23 20:39:01,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:39:01,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:39:01,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721020291] [2023-12-23 20:39:01,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721020291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:39:01,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:39:01,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 20:39:01,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381020802] [2023-12-23 20:39:01,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:39:01,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 20:39:01,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:39:01,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 20:39:01,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 20:39:01,694 INFO L87 Difference]: Start difference. First operand 128 states and 167 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:39:02,933 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 [] [2023-12-23 20:39:04,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 20:39:06,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 20:39:07,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:39:07,378 INFO L93 Difference]: Finished difference Result 194 states and 254 transitions. [2023-12-23 20:39:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 20:39:07,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 89 [2023-12-23 20:39:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:39:07,380 INFO L225 Difference]: With dead ends: 194 [2023-12-23 20:39:07,381 INFO L226 Difference]: Without dead ends: 129 [2023-12-23 20:39:07,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 20:39:07,382 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 54 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-23 20:39:07,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 241 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-23 20:39:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-23 20:39:07,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2023-12-23 20:39:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.108433734939759) internal successors, (92), 86 states have internal predecessors, (92), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-23 20:39:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 164 transitions. [2023-12-23 20:39:07,409 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 164 transitions. Word has length 89 [2023-12-23 20:39:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:39:07,410 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 164 transitions. [2023-12-23 20:39:07,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:39:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 164 transitions. [2023-12-23 20:39:07,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-23 20:39:07,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:39:07,413 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:07,420 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 [2023-12-23 20:39:07,620 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 [2023-12-23 20:39:07,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:39:07,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:39:07,621 INFO L85 PathProgramCache]: Analyzing trace with hash -624789116, now seen corresponding path program 1 times [2023-12-23 20:39:07,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:39:07,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107579815] [2023-12-23 20:39:07,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:39:07,621 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 20:39:07,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:39:07,622 INFO L229 MonitoredProcess]: Starting monitored process 13 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 20:39:07,623 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 (13)] Waiting until timeout for monitored process [2023-12-23 20:39:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:39:07,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 20:39:07,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:39:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-23 20:39:07,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:39:07,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:39:07,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107579815] [2023-12-23 20:39:07,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107579815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:39:07,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:39:07,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 20:39:07,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231039614] [2023-12-23 20:39:07,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:39:07,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 20:39:07,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:39:07,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 20:39:07,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 20:39:07,752 INFO L87 Difference]: Start difference. First operand 128 states and 164 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:39:09,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:39:09,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:39:09,756 INFO L93 Difference]: Finished difference Result 196 states and 248 transitions. [2023-12-23 20:39:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 20:39:09,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 90 [2023-12-23 20:39:09,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:39:09,760 INFO L225 Difference]: With dead ends: 196 [2023-12-23 20:39:09,760 INFO L226 Difference]: Without dead ends: 131 [2023-12-23 20:39:09,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 20:39:09,761 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 8 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 20:39:09,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 100 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 20:39:09,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-23 20:39:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2023-12-23 20:39:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 81 states have internal predecessors, (84), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-23 20:39:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 156 transitions. [2023-12-23 20:39:09,773 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 156 transitions. Word has length 90 [2023-12-23 20:39:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:39:09,773 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 156 transitions. [2023-12-23 20:39:09,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-23 20:39:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 156 transitions. [2023-12-23 20:39:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-23 20:39:09,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:39:09,775 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 20:39:09,782 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 (13)] Forceful destruction successful, exit code 0 [2023-12-23 20:39:09,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 20:39:09,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:39:09,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:39:09,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1819561316, now seen corresponding path program 1 times [2023-12-23 20:39:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:39:09,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405501473] [2023-12-23 20:39:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:39:09,977 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 20:39:09,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:39:09,981 INFO L229 MonitoredProcess]: Starting monitored process 14 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 20:39:09,997 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 (14)] Waiting until timeout for monitored process [2023-12-23 20:39:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 20:39:10,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-23 20:39:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 20:39:10,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-23 20:39:10,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [513478103] [2023-12-23 20:39:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:39:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 20:39:10,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 20:39:10,533 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 20:39:10,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-23 20:39:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:39:10,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-23 20:39:10,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:47:01,352 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse20 (exists ((~var_1_15~0 (_ BitVec 8))) (let ((.cse45 ((_ zero_extend 24) ~var_1_15~0))) (and (exists ((~var_1_16~0 (_ BitVec 8))) (not (= ((_ zero_extend 24) ~var_1_16~0) .cse45))) (not (bvslt c_~var_1_1~0 .cse45)) (= c_~var_1_1~0 (bvadd (bvneg .cse45) .cse45 (_ bv5 32))))))) (.cse27 (exists ((~var_1_15~0 (_ BitVec 8))) (let ((.cse44 ((_ zero_extend 24) ~var_1_15~0))) (and (exists ((~var_1_16~0 (_ BitVec 8))) (= ((_ zero_extend 24) ~var_1_16~0) .cse44)) (not (bvslt c_~var_1_1~0 .cse44)) (= c_~var_1_1~0 (bvadd (bvneg .cse44) .cse44 (_ bv5 32))))))) (.cse4 (exists ((~var_1_15~0 (_ BitVec 8))) (let ((.cse43 ((_ zero_extend 24) ~var_1_15~0))) (and (exists ((~var_1_16~0 (_ BitVec 8))) (= ((_ zero_extend 24) ~var_1_16~0) .cse43)) (= c_~var_1_1~0 (bvadd (bvneg .cse43) .cse43 (_ bv5 32))) (bvslt c_~var_1_1~0 .cse43))))) (.cse25 (exists ((~var_1_15~0 (_ BitVec 8))) (let ((.cse42 ((_ zero_extend 24) ~var_1_15~0))) (and (exists ((~var_1_16~0 (_ BitVec 8))) (not (= ((_ zero_extend 24) ~var_1_16~0) .cse42))) (= c_~var_1_1~0 (bvadd (bvneg .cse42) .cse42 (_ bv5 32))) (bvslt c_~var_1_1~0 .cse42))))) (.cse28 ((_ to_fp 8 24) c_currentRoundingMode (/ 4.0 5.0)))) (let ((.cse8 (exists ((~var_1_11~0 (_ BitVec 32)) (~var_1_10~0 (_ BitVec 32))) (and (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_10~0))) (not (= ~var_1_11~0 ~var_1_10~0)) (not (bvsgt ~var_1_11~0 ~var_1_10~0)) (not (= (bvneg ~var_1_11~0) (_ bv0 32)))))) (.cse6 (exists ((~var_1_9~0 (_ BitVec 32)) (~var_1_11~0 (_ BitVec 32))) (let ((.cse41 (bvneg ~var_1_11~0))) (let ((.cse40 (bvadd ~var_1_9~0 (bvmul (_ bv4294967295 32) .cse41)))) (and (not (= ~var_1_9~0 ~var_1_11~0)) (bvsgt ~var_1_11~0 .cse40) (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg .cse40))) (not (= .cse41 (_ bv0 32)))))))) (.cse7 (exists ((~var_1_10~0 (_ BitVec 32))) (and (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_10~0))) (not (= (_ bv2147483647 32) ~var_1_10~0))))) (.cse15 (exists ((~var_1_11~0 (_ BitVec 32))) (let ((.cse39 (bvadd ~var_1_11~0 (bvmul (_ bv4294967295 32) (bvneg ~var_1_11~0))))) (and (bvsgt ~var_1_11~0 .cse39) (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg .cse39))))))) (.cse10 (exists ((~var_1_11~0 (_ BitVec 32))) (not (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg (bvadd ~var_1_11~0 (bvmul (_ bv4294967295 32) (bvneg ~var_1_11~0))))))))) (.cse2 (exists ((~var_1_11~0 (_ BitVec 32)) (~var_1_10~0 (_ BitVec 32))) (and (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_10~0))) (bvsgt ~var_1_11~0 ~var_1_10~0) (not (= (bvneg ~var_1_11~0) (_ bv0 32)))))) (.cse17 (exists ((~var_1_9~0 (_ BitVec 32)) (~var_1_10~0 (_ BitVec 32))) (and (bvsgt ~var_1_9~0 ~var_1_10~0) (not (= ~var_1_9~0 (bvadd ~var_1_10~0 (bvneg ~var_1_9~0)))) (not (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_10~0))))))) (.cse19 (exists ((~var_1_16~0 (_ BitVec 8)) (~var_1_15~0 (_ BitVec 8))) (let ((.cse38 ((_ zero_extend 24) ~var_1_15~0))) (and (not (= ((_ zero_extend 24) ~var_1_16~0) .cse38)) (= c_~var_1_1~0 (bvadd (bvneg .cse38) .cse38 (_ bv5 32))) (bvslt c_~var_1_1~0 .cse38))))) (.cse5 (exists ((~var_1_10~0 (_ BitVec 32))) (let ((.cse37 (bvneg ~var_1_10~0))) (and (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode .cse37)) (not (= .cse37 (_ bv0 32))))))) (.cse13 (exists ((~var_1_9~0 (_ BitVec 32))) (not (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_9~0)))))) (.cse21 (exists ((~var_1_9~0 (_ BitVec 32)) (~var_1_11~0 (_ BitVec 32))) (let ((.cse36 (bvneg ~var_1_11~0))) (let ((.cse35 (bvadd ~var_1_9~0 (bvmul (_ bv4294967295 32) .cse36)))) (and (not (= ~var_1_9~0 ~var_1_11~0)) (bvsgt ~var_1_11~0 .cse35) (not (= .cse36 (_ bv0 32))) (not (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg .cse35))))))))) (.cse1 (exists ((~var_1_9~0 (_ BitVec 32)) (~var_1_10~0 (_ BitVec 32))) (and (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_10~0))) (not (= ~var_1_9~0 ~var_1_10~0)) (not (= ~var_1_9~0 (bvadd ~var_1_10~0 (bvneg ~var_1_9~0)))) (not (bvsgt ~var_1_9~0 ~var_1_10~0))))) (.cse18 (exists ((~var_1_10~0 (_ BitVec 32))) (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_10~0))))) (.cse23 (exists ((~var_1_16~0 (_ BitVec 8)) (~var_1_15~0 (_ BitVec 8))) (let ((.cse34 ((_ zero_extend 24) ~var_1_15~0))) (and (= ((_ zero_extend 24) ~var_1_16~0) .cse34) (= c_~var_1_1~0 (bvadd (bvneg .cse34) .cse34 (_ bv5 32))) (bvslt c_~var_1_1~0 .cse34))))) (.cse12 (exists ((~var_1_11~0 (_ BitVec 32)) (~var_1_10~0 (_ BitVec 32))) (and (bvsgt ~var_1_11~0 ~var_1_10~0) (not (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_10~0)))) (not (= (bvneg ~var_1_11~0) (_ bv0 32)))))) (.cse26 (exists ((~var_1_9~0 (_ BitVec 32)) (~var_1_11~0 (_ BitVec 32))) (let ((.cse33 (bvneg ~var_1_11~0))) (let ((.cse32 (bvadd ~var_1_9~0 (bvmul (_ bv4294967295 32) .cse33)))) (and (not (= ~var_1_9~0 ~var_1_11~0)) (not (bvsgt ~var_1_11~0 .cse32)) (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg .cse32))) (not (= .cse33 (_ bv0 32)))))))) (.cse11 (exists ((~var_1_9~0 (_ BitVec 32)) (~var_1_10~0 (_ BitVec 32))) (and (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_10~0))) (bvsgt ~var_1_9~0 ~var_1_10~0) (not (= ~var_1_9~0 (bvadd ~var_1_10~0 (bvneg ~var_1_9~0))))))) (.cse24 (exists ((~var_1_16~0 (_ BitVec 8)) (~var_1_15~0 (_ BitVec 8))) (let ((.cse31 ((_ zero_extend 24) ~var_1_15~0))) (and (= ((_ zero_extend 24) ~var_1_16~0) .cse31) (not (bvslt c_~var_1_1~0 .cse31)) (= c_~var_1_1~0 (bvadd (bvneg .cse31) .cse31 (_ bv5 32))))))) (.cse9 (exists ((~var_1_9~0 (_ BitVec 32)) (~var_1_11~0 (_ BitVec 32))) (let ((.cse30 (bvadd ~var_1_9~0 (bvmul (_ bv4294967295 32) (bvneg ~var_1_11~0))))) (and (not (bvsgt ~var_1_11~0 .cse30)) (not (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg .cse30)))))))) (.cse0 (or .cse4 .cse25)) (.cse16 (exists ((~var_1_10~0 (_ BitVec 32))) (not (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_10~0)))))) (.cse22 (exists ((~var_1_16~0 (_ BitVec 8)) (~var_1_15~0 (_ BitVec 8))) (let ((.cse29 ((_ zero_extend 24) ~var_1_15~0))) (and (not (= ((_ zero_extend 24) ~var_1_16~0) .cse29)) (not (bvslt c_~var_1_1~0 .cse29)) (= c_~var_1_1~0 (bvadd (bvneg .cse29) .cse29 (_ bv5 32))))))) (.cse14 (exists ((~var_1_9~0 (_ BitVec 32)) (~var_1_11~0 (_ BitVec 32))) (and (fp.gt .cse28 ((_ to_fp 8 24) c_currentRoundingMode (bvneg ~var_1_9~0))) (= (bvneg ~var_1_11~0) (_ bv0 32)) (bvsgt ~var_1_11~0 ~var_1_9~0)))) (.cse3 (or .cse20 .cse27))) (or (and .cse0 .cse1) (and .cse2 .cse3) .cse4 (and .cse5 .cse3) (and .cse0 .cse6) (and .cse7 .cse3) (and .cse8 .cse3) (and .cse9 .cse3) (and .cse0 .cse10) (and .cse0 .cse8) (and .cse11 .cse3) (and .cse6 .cse3) (and .cse0 .cse12) (and .cse0 .cse13) (and .cse0 .cse14) (and .cse15 .cse3) (and .cse0 .cse7) (and .cse0 .cse15) (and .cse16 .cse0) (and .cse17 .cse3) (and .cse18 .cse19) .cse20 (and .cse10 .cse3) (and .cse21 .cse3) (and .cse0 .cse2) (and .cse0 .cse17) (and .cse18 .cse22) (and .cse16 .cse19) (and .cse5 .cse0) (and .cse13 .cse3) (and .cse0 .cse21) (and .cse23 .cse18) (and .cse1 .cse3) (and .cse18 .cse24) (and .cse16 .cse23) (and .cse12 .cse3) .cse25 (and .cse16 .cse3) (and .cse0 .cse26) (and .cse26 .cse3) (and .cse0 .cse11) (and .cse16 .cse24) (and .cse9 .cse0) (and .cse16 .cse22) (and .cse14 .cse3) .cse27))) is different from false Received shutdown request... [2023-12-23 20:47:39,183 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 (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 20:47:39,197 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 [2023-12-23 20:47:39,197 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 20:47:39,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 20:47:39,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2023-12-23 20:47:40,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-23 20:47:40,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /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 20:47:40,312 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 177 with TraceHistMax 28,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-23 20:47:40,315 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 20:47:40,319 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 20:47:40,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:47:40 BoogieIcfgContainer [2023-12-23 20:47:40,320 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 20:47:40,323 INFO L158 Benchmark]: Toolchain (without parser) took 871546.49ms. Allocated memory was 329.3MB in the beginning and 6.9GB in the end (delta: 6.6GB). Free memory was 286.6MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-12-23 20:47:40,324 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 223.3MB. Free memory was 172.7MB in the beginning and 172.6MB in the end (delta: 89.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 20:47:40,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.69ms. Allocated memory is still 329.3MB. Free memory was 286.6MB in the beginning and 273.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-23 20:47:40,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.43ms. Allocated memory is still 329.3MB. Free memory was 273.0MB in the beginning and 271.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-23 20:47:40,325 INFO L158 Benchmark]: Boogie Preprocessor took 30.87ms. Allocated memory is still 329.3MB. Free memory was 271.4MB in the beginning and 268.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-23 20:47:40,325 INFO L158 Benchmark]: RCFGBuilder took 5083.71ms. Allocated memory is still 329.3MB. Free memory was 268.8MB in the beginning and 249.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-23 20:47:40,325 INFO L158 Benchmark]: TraceAbstraction took 866184.78ms. Allocated memory was 329.3MB in the beginning and 6.9GB in the end (delta: 6.6GB). Free memory was 249.4MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-12-23 20:47:40,326 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 223.3MB. Free memory was 172.7MB in the beginning and 172.6MB in the end (delta: 89.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 211.69ms. Allocated memory is still 329.3MB. Free memory was 286.6MB in the beginning and 273.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.43ms. Allocated memory is still 329.3MB. Free memory was 273.0MB in the beginning and 271.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.87ms. Allocated memory is still 329.3MB. Free memory was 271.4MB in the beginning and 268.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 5083.71ms. Allocated memory is still 329.3MB. Free memory was 268.8MB in the beginning and 249.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 866184.78ms. Allocated memory was 329.3MB in the beginning and 6.9GB in the end (delta: 6.6GB). Free memory was 249.4MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 4.1GB. 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 177 with TraceHistMax 28,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 866.1s, OverallIterations: 10, TraceHistogramMax: 28, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 170.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 301 SdHoareTripleChecker+Valid, 105.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 297 mSDsluCounter, 1468 SdHoareTripleChecker+Invalid, 101.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 930 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 721 IncrementalHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 538 mSDtfsCounter, 721 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 892 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 125.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=7, InterpolantAutomatonStates: 56, 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, 9 MinimizatonAttempts, 42 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 180.1s InterpolantComputationTime, 1064 NumberOfCodeBlocks, 1064 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 876 ConstructedInterpolants, 3 QuantifiedInterpolants, 2924 SizeOfPredicates, 56 NumberOfNonLiveVariables, 1337 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 3586/3640 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