/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_operatoramount_amount250_file-18.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 06:32:03,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 06:32:03,539 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 06:32:03,543 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 06:32:03,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 06:32:03,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 06:32:03,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 06:32:03,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 06:32:03,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 06:32:03,575 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 06:32:03,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 06:32:03,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 06:32:03,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 06:32:03,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 06:32:03,577 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 06:32:03,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 06:32:03,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 06:32:03,577 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 06:32:03,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 06:32:03,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 06:32:03,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 06:32:03,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 06:32:03,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 06:32:03,578 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 06:32:03,578 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 06:32:03,579 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 06:32:03,579 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 06:32:03,579 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 06:32:03,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 06:32:03,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 06:32:03,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 06:32:03,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 06:32:03,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 06:32:03,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 06:32:03,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 06:32:03,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 06:32:03,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 06:32:03,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 06:32:03,581 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 06:32:03,581 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 06:32:03,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 06:32:03,581 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 06:32:03,581 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 06:32:03,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 06:32:03,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 06:32:03,582 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 06:32:03,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 06:32:03,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 06:32:03,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 06:32:03,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 06:32:03,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 06:32:03,822 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 06:32:03,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-18.i [2023-12-24 06:32:05,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 06:32:05,222 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 06:32:05,223 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-18.i [2023-12-24 06:32:05,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee39c1dbe/c62a0ba852874578ba1323c0542793b0/FLAGbe4ad2dff [2023-12-24 06:32:05,244 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee39c1dbe/c62a0ba852874578ba1323c0542793b0 [2023-12-24 06:32:05,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 06:32:05,247 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 06:32:05,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 06:32:05,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 06:32:05,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 06:32:05,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5551276f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05, skipping insertion in model container [2023-12-24 06:32:05,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,290 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 06:32:05,405 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_operatoramount_amount250_file-18.i[916,929] [2023-12-24 06:32:05,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 06:32:05,565 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 06:32:05,582 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_operatoramount_amount250_file-18.i[916,929] [2023-12-24 06:32:05,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 06:32:05,663 INFO L206 MainTranslator]: Completed translation [2023-12-24 06:32:05,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05 WrapperNode [2023-12-24 06:32:05,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 06:32:05,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 06:32:05,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 06:32:05,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 06:32:05,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,722 INFO L138 Inliner]: procedures = 27, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 372 [2023-12-24 06:32:05,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 06:32:05,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 06:32:05,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 06:32:05,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 06:32:05,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,758 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,774 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]. [2023-12-24 06:32:05,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 06:32:05,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 06:32:05,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 06:32:05,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 06:32:05,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (1/1) ... [2023-12-24 06:32:05,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 06:32:05,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 06:32:05,873 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) [2023-12-24 06:32:05,881 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 [2023-12-24 06:32:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 06:32:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 06:32:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 06:32:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 06:32:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 06:32:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 06:32:06,007 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 06:32:06,011 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 06:32:13,063 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 06:32:13,120 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 06:32:13,120 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 06:32:13,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:32:13 BoogieIcfgContainer [2023-12-24 06:32:13,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 06:32:13,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 06:32:13,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 06:32:13,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 06:32:13,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 06:32:05" (1/3) ... [2023-12-24 06:32:13,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4443bb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:32:13, skipping insertion in model container [2023-12-24 06:32:13,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:32:05" (2/3) ... [2023-12-24 06:32:13,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4443bb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:32:13, skipping insertion in model container [2023-12-24 06:32:13,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:32:13" (3/3) ... [2023-12-24 06:32:13,126 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-18.i [2023-12-24 06:32:13,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 06:32:13,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 06:32:13,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 06:32:13,191 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;@d403642, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 06:32:13,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 06:32:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 99 states have (on average 1.5454545454545454) internal successors, (153), 100 states have internal predecessors, (153), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 06:32:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-24 06:32:13,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:32:13,225 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:32:13,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:32:13,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:32:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash -5338440, now seen corresponding path program 1 times [2023-12-24 06:32:13,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:32:13,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123037123] [2023-12-24 06:32:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:32:13,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:32:13,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:32:13,245 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) [2023-12-24 06:32:13,248 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 [2023-12-24 06:32:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:32:14,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 06:32:14,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:32:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-24 06:32:14,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 06:32:14,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:32:14,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123037123] [2023-12-24 06:32:14,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123037123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 06:32:14,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 06:32:14,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 06:32:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662234549] [2023-12-24 06:32:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 06:32:14,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 06:32:14,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:32:14,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 06:32:14,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 06:32:14,160 INFO L87 Difference]: Start difference. First operand has 153 states, 99 states have (on average 1.5454545454545454) internal successors, (153), 100 states have internal predecessors, (153), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-24 06:32:18,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:32:18,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:32:18,659 INFO L93 Difference]: Finished difference Result 303 states and 559 transitions. [2023-12-24 06:32:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 06:32:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 327 [2023-12-24 06:32:18,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:32:18,781 INFO L225 Difference]: With dead ends: 303 [2023-12-24 06:32:18,781 INFO L226 Difference]: Without dead ends: 151 [2023-12-24 06:32:18,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 06:32:18,786 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 06:32:18,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 06:32:18,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-24 06:32:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-12-24 06:32:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 98 states have (on average 1.5) internal successors, (147), 98 states have internal predecessors, (147), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 06:32:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 249 transitions. [2023-12-24 06:32:18,829 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 249 transitions. Word has length 327 [2023-12-24 06:32:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:32:18,831 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 249 transitions. [2023-12-24 06:32:18,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-24 06:32:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 249 transitions. [2023-12-24 06:32:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-24 06:32:18,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:32:18,835 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:32:18,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 06:32:19,056 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 [2023-12-24 06:32:19,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:32:19,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:32:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash 797918700, now seen corresponding path program 1 times [2023-12-24 06:32:19,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:32:19,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141198321] [2023-12-24 06:32:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:32:19,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:32:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:32:19,060 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) [2023-12-24 06:32:19,092 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 [2023-12-24 06:32:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:32:19,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 06:32:19,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:32:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-24 06:32:23,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 06:32:23,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:32:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141198321] [2023-12-24 06:32:23,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141198321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 06:32:23,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 06:32:23,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 06:32:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963571855] [2023-12-24 06:32:23,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 06:32:23,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 06:32:23,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:32:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 06:32:23,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 06:32:23,717 INFO L87 Difference]: Start difference. First operand 151 states and 249 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-24 06:32:28,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:32:32,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:32:36,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:32:40,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:32:44,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:32:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:32:44,957 INFO L93 Difference]: Finished difference Result 452 states and 746 transitions. [2023-12-24 06:32:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 06:32:45,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 328 [2023-12-24 06:32:45,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:32:45,082 INFO L225 Difference]: With dead ends: 452 [2023-12-24 06:32:45,082 INFO L226 Difference]: Without dead ends: 302 [2023-12-24 06:32:45,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 06:32:45,083 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 237 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 103 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2023-12-24 06:32:45,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 729 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 21.1s Time] [2023-12-24 06:32:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-24 06:32:45,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 236. [2023-12-24 06:32:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 131 states have (on average 1.381679389312977) internal successors, (181), 131 states have internal predecessors, (181), 102 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-24 06:32:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 385 transitions. [2023-12-24 06:32:45,119 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 385 transitions. Word has length 328 [2023-12-24 06:32:45,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:32:45,119 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 385 transitions. [2023-12-24 06:32:45,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-24 06:32:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 385 transitions. [2023-12-24 06:32:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-24 06:32:45,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:32:45,123 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:32:45,149 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 [2023-12-24 06:32:45,323 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 [2023-12-24 06:32:45,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:32:45,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:32:45,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1176289396, now seen corresponding path program 1 times [2023-12-24 06:32:45,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:32:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633369599] [2023-12-24 06:32:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:32:45,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:32:45,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:32:45,326 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) [2023-12-24 06:32:45,328 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 [2023-12-24 06:32:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:32:46,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 06:32:46,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:32:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 488 proven. 282 refuted. 0 times theorem prover too weak. 4330 trivial. 0 not checked. [2023-12-24 06:32:52,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:32:52,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:32:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633369599] [2023-12-24 06:32:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633369599] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 06:32:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2142083097] [2023-12-24 06:32:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:32:52,751 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 06:32:52,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 06:32:52,797 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) [2023-12-24 06:32:52,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-24 06:32:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:32:53,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 06:32:53,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:32:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-24 06:32:53,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 06:32:53,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2142083097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 06:32:53,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 06:32:53,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-24 06:32:53,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445371109] [2023-12-24 06:32:53,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 06:32:53,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 06:32:53,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:32:53,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 06:32:53,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 06:32:53,380 INFO L87 Difference]: Start difference. First operand 236 states and 385 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-24 06:32:54,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:32:58,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:33:03,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:33:07,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:33:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:33:07,551 INFO L93 Difference]: Finished difference Result 535 states and 879 transitions. [2023-12-24 06:33:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 06:33:07,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 328 [2023-12-24 06:33:07,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:33:07,562 INFO L225 Difference]: With dead ends: 535 [2023-12-24 06:33:07,563 INFO L226 Difference]: Without dead ends: 385 [2023-12-24 06:33:07,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 06:33:07,565 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 232 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-24 06:33:07,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 496 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 14.1s Time] [2023-12-24 06:33:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-24 06:33:07,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 381. [2023-12-24 06:33:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 224 states have (on average 1.4107142857142858) internal successors, (316), 224 states have internal predecessors, (316), 153 states have call successors, (153), 3 states have call predecessors, (153), 3 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-24 06:33:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 622 transitions. [2023-12-24 06:33:07,620 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 622 transitions. Word has length 328 [2023-12-24 06:33:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:33:07,629 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 622 transitions. [2023-12-24 06:33:07,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-24 06:33:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 622 transitions. [2023-12-24 06:33:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-24 06:33:07,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:33:07,634 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:33:07,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 06:33:07,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-24 06:33:08,059 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 [2023-12-24 06:33:08,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:33:08,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:33:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2105105776, now seen corresponding path program 1 times [2023-12-24 06:33:08,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:33:08,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148087670] [2023-12-24 06:33:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:33:08,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:33:08,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:33:08,062 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) [2023-12-24 06:33:08,063 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 [2023-12-24 06:33:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:33:08,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 06:33:08,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:33:15,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 488 proven. 282 refuted. 0 times theorem prover too weak. 4330 trivial. 0 not checked. [2023-12-24 06:33:15,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:33:15,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:33:15,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148087670] [2023-12-24 06:33:15,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148087670] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 06:33:15,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1883991851] [2023-12-24 06:33:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:33:15,932 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 06:33:15,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 06:33:15,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 06:33:15,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 06:33:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:33:16,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 06:33:16,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:33:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-24 06:33:20,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 06:33:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1883991851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 06:33:20,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 06:33:20,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2023-12-24 06:33:20,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465424329] [2023-12-24 06:33:20,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 06:33:20,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 06:33:20,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:33:20,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 06:33:20,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 06:33:20,009 INFO L87 Difference]: Start difference. First operand 381 states and 622 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-24 06:33:24,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:33:28,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:33:33,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:33:37,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:33:41,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:33:41,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:33:41,154 INFO L93 Difference]: Finished difference Result 790 states and 1296 transitions. [2023-12-24 06:33:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 06:33:41,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 328 [2023-12-24 06:33:41,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:33:41,289 INFO L225 Difference]: With dead ends: 790 [2023-12-24 06:33:41,289 INFO L226 Difference]: Without dead ends: 495 [2023-12-24 06:33:41,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-24 06:33:41,290 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 223 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 103 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-12-24 06:33:41,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 731 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 11 Invalid, 5 Unknown, 0 Unchecked, 21.0s Time] [2023-12-24 06:33:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-24 06:33:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 400. [2023-12-24 06:33:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 243 states have (on average 1.4279835390946503) internal successors, (347), 243 states have internal predecessors, (347), 153 states have call successors, (153), 3 states have call predecessors, (153), 3 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-24 06:33:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 653 transitions. [2023-12-24 06:33:41,313 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 653 transitions. Word has length 328 [2023-12-24 06:33:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:33:41,314 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 653 transitions. [2023-12-24 06:33:41,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-24 06:33:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 653 transitions. [2023-12-24 06:33:41,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-24 06:33:41,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:33:41,316 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:33:41,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 06:33:41,543 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 [2023-12-24 06:33:41,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:33:41,721 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:33:41,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:33:41,721 INFO L85 PathProgramCache]: Analyzing trace with hash 102542397, now seen corresponding path program 1 times [2023-12-24 06:33:41,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:33:41,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8686800] [2023-12-24 06:33:41,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:33:41,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:33:41,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:33:41,723 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 06:33:41,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 06:33:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:33:42,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 06:33:42,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:33:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 488 proven. 282 refuted. 0 times theorem prover too weak. 4330 trivial. 0 not checked. [2023-12-24 06:33:48,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:33:49,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:33:49,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8686800] [2023-12-24 06:33:49,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8686800] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 06:33:49,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2049212676] [2023-12-24 06:33:49,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:33:49,163 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 06:33:49,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 06:33:49,164 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 06:33:49,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-24 06:33:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:33:51,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 06:33:51,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:33:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 438 proven. 144 refuted. 0 times theorem prover too weak. 4518 trivial. 0 not checked. [2023-12-24 06:33:54,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:33:54,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2049212676] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 06:33:54,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 06:33:54,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2023-12-24 06:33:54,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683816677] [2023-12-24 06:33:54,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 06:33:54,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 06:33:54,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:33:54,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 06:33:54,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-24 06:33:54,511 INFO L87 Difference]: Start difference. First operand 400 states and 653 transitions. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 3 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2023-12-24 06:34:01,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:05,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:09,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:13,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:17,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:21,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:26,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:26,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:34:26,009 INFO L93 Difference]: Finished difference Result 740 states and 1186 transitions. [2023-12-24 06:34:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 06:34:26,148 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 3 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) Word has length 328 [2023-12-24 06:34:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:34:26,151 INFO L225 Difference]: With dead ends: 740 [2023-12-24 06:34:26,151 INFO L226 Difference]: Without dead ends: 430 [2023-12-24 06:34:26,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-12-24 06:34:26,152 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 338 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 16 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2023-12-24 06:34:26,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 636 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 403 Invalid, 7 Unknown, 0 Unchecked, 31.0s Time] [2023-12-24 06:34:26,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-12-24 06:34:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 424. [2023-12-24 06:34:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 261 states have (on average 1.3869731800766283) internal successors, (362), 261 states have internal predecessors, (362), 153 states have call successors, (153), 9 states have call predecessors, (153), 9 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-24 06:34:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 668 transitions. [2023-12-24 06:34:26,175 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 668 transitions. Word has length 328 [2023-12-24 06:34:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:34:26,175 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 668 transitions. [2023-12-24 06:34:26,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 3 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2023-12-24 06:34:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 668 transitions. [2023-12-24 06:34:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-24 06:34:26,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:34:26,177 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:34:26,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-24 06:34:26,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 06:34:26,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:34:26,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:34:26,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:34:26,595 INFO L85 PathProgramCache]: Analyzing trace with hash 526189119, now seen corresponding path program 1 times [2023-12-24 06:34:26,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:34:26,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563591473] [2023-12-24 06:34:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:34:26,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:34:26,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:34:26,597 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) [2023-12-24 06:34:26,598 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 [2023-12-24 06:34:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:34:27,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 06:34:27,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:34:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2132 proven. 210 refuted. 0 times theorem prover too weak. 2758 trivial. 0 not checked. [2023-12-24 06:34:32,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:34:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 42 proven. 108 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2023-12-24 06:34:33,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:34:33,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563591473] [2023-12-24 06:34:33,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563591473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 06:34:33,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 06:34:33,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2023-12-24 06:34:33,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307889303] [2023-12-24 06:34:33,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 06:34:33,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 06:34:33,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:34:33,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 06:34:33,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-24 06:34:33,639 INFO L87 Difference]: Start difference. First operand 424 states and 668 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 3 states have call successors, (87), 3 states have call predecessors, (87), 5 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2023-12-24 06:34:42,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:46,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:50,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:54,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:34:58,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:35:02,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:35:06,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:35:10,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:35:14,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:35:18,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:35:22,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:35:26,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:35:28,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:35:30,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:35:33,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:35:33,975 INFO L93 Difference]: Finished difference Result 947 states and 1463 transitions. [2023-12-24 06:35:33,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-24 06:35:33,976 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 3 states have call successors, (87), 3 states have call predecessors, (87), 5 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) Word has length 328 [2023-12-24 06:35:33,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:35:33,980 INFO L225 Difference]: With dead ends: 947 [2023-12-24 06:35:33,981 INFO L226 Difference]: Without dead ends: 633 [2023-12-24 06:35:33,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 647 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 06:35:33,985 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 698 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 299 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.5s IncrementalHoareTripleChecker+Time [2023-12-24 06:35:33,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1082 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 884 Invalid, 12 Unknown, 0 Unchecked, 58.5s Time] [2023-12-24 06:35:33,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-12-24 06:35:34,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 448. [2023-12-24 06:35:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 279 states have (on average 1.3548387096774193) internal successors, (378), 279 states have internal predecessors, (378), 153 states have call successors, (153), 15 states have call predecessors, (153), 15 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-24 06:35:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 684 transitions. [2023-12-24 06:35:34,036 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 684 transitions. Word has length 328 [2023-12-24 06:35:34,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:35:34,038 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 684 transitions. [2023-12-24 06:35:34,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 3 states have call successors, (87), 3 states have call predecessors, (87), 5 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2023-12-24 06:35:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 684 transitions. [2023-12-24 06:35:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-24 06:35:34,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:35:34,046 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:35:34,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 06:35:34,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:35:34,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:35:34,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:35:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2032451515, now seen corresponding path program 1 times [2023-12-24 06:35:34,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:35:34,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616877888] [2023-12-24 06:35:34,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:35:34,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:35:34,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:35:34,263 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 06:35:34,264 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 (11)] Waiting until timeout for monitored process [2023-12-24 06:35:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:35:35,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 06:35:35,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:35:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2588 proven. 69 refuted. 0 times theorem prover too weak. 2443 trivial. 0 not checked. [2023-12-24 06:35:36,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:35:37,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:35:37,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616877888] [2023-12-24 06:35:37,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616877888] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 06:35:37,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [734797915] [2023-12-24 06:35:37,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:35:37,231 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 06:35:37,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 06:35:37,232 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 06:35:37,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 06:35:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:35:39,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 06:35:39,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:35:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2588 proven. 69 refuted. 0 times theorem prover too weak. 2443 trivial. 0 not checked. [2023-12-24 06:35:40,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:35:40,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [734797915] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 06:35:40,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 06:35:40,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-24 06:35:40,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666459498] [2023-12-24 06:35:40,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 06:35:40,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 06:35:40,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:35:41,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 06:35:41,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-24 06:35:41,000 INFO L87 Difference]: Start difference. First operand 448 states and 684 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-24 06:35:49,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 06:35:53,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 06:35:57,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 06:36:01,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 06:36:01,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:36:01,447 INFO L93 Difference]: Finished difference Result 802 states and 1216 transitions. [2023-12-24 06:36:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 06:36:01,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 328 [2023-12-24 06:36:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:36:01,585 INFO L225 Difference]: With dead ends: 802 [2023-12-24 06:36:01,585 INFO L226 Difference]: Without dead ends: 468 [2023-12-24 06:36:01,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-24 06:36:01,586 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 250 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2023-12-24 06:36:01,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 521 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 361 Invalid, 4 Unknown, 0 Unchecked, 20.1s Time] [2023-12-24 06:36:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-24 06:36:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 460. [2023-12-24 06:36:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 288 states have (on average 1.3368055555555556) internal successors, (385), 288 states have internal predecessors, (385), 153 states have call successors, (153), 18 states have call predecessors, (153), 18 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-24 06:36:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 691 transitions. [2023-12-24 06:36:01,612 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 691 transitions. Word has length 328 [2023-12-24 06:36:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:36:01,612 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 691 transitions. [2023-12-24 06:36:01,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-24 06:36:01,613 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 691 transitions. [2023-12-24 06:36:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-12-24 06:36:01,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:36:01,614 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:36:01,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 06:36:01,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 06:36:02,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 06:36:02,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:36:02,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:36:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash -698482756, now seen corresponding path program 1 times [2023-12-24 06:36:02,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:36:02,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030702007] [2023-12-24 06:36:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:36:02,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:36:02,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:36:02,027 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) [2023-12-24 06:36:02,032 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 [2023-12-24 06:36:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:36:02,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 06:36:02,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:36:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-24 06:36:06,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 06:36:06,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:36:06,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030702007] [2023-12-24 06:36:06,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030702007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 06:36:06,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 06:36:06,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 06:36:06,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667164512] [2023-12-24 06:36:06,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 06:36:06,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 06:36:06,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:36:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 06:36:06,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 06:36:06,074 INFO L87 Difference]: Start difference. First operand 460 states and 691 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-24 06:36:10,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:14,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:18,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:22,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:26,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:31,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:35,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:39,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:43,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:47,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:51,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:55,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:36:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:36:55,406 INFO L93 Difference]: Finished difference Result 1284 states and 1951 transitions. [2023-12-24 06:36:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 06:36:55,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 329 [2023-12-24 06:36:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:36:55,537 INFO L225 Difference]: With dead ends: 1284 [2023-12-24 06:36:55,537 INFO L226 Difference]: Without dead ends: 932 [2023-12-24 06:36:55,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 06:36:55,539 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 382 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 112 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.1s IncrementalHoareTripleChecker+Time [2023-12-24 06:36:55,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1084 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 28 Invalid, 12 Unknown, 0 Unchecked, 49.1s Time] [2023-12-24 06:36:55,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-12-24 06:36:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 666. [2023-12-24 06:36:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 437 states have (on average 1.356979405034325) internal successors, (593), 437 states have internal predecessors, (593), 204 states have call successors, (204), 24 states have call predecessors, (204), 24 states have return successors, (204), 204 states have call predecessors, (204), 204 states have call successors, (204) [2023-12-24 06:36:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1001 transitions. [2023-12-24 06:36:55,601 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1001 transitions. Word has length 329 [2023-12-24 06:36:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:36:55,603 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1001 transitions. [2023-12-24 06:36:55,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-24 06:36:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1001 transitions. [2023-12-24 06:36:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-12-24 06:36:55,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:36:55,605 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:36:55,628 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 [2023-12-24 06:36:55,825 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 [2023-12-24 06:36:55,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:36:55,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:36:55,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1845557292, now seen corresponding path program 1 times [2023-12-24 06:36:55,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:36:55,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670063131] [2023-12-24 06:36:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:36:55,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:36:55,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:36:55,828 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) [2023-12-24 06:36:55,832 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 [2023-12-24 06:36:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:36:56,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 06:36:56,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:37:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2063 proven. 72 refuted. 0 times theorem prover too weak. 2965 trivial. 0 not checked. [2023-12-24 06:37:02,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:37:04,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:37:04,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670063131] [2023-12-24 06:37:04,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670063131] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 06:37:04,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1971127561] [2023-12-24 06:37:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:37:04,178 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 06:37:04,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 06:37:04,179 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) [2023-12-24 06:37:04,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-24 06:37:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:37:06,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 06:37:06,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:37:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2048 proven. 39 refuted. 0 times theorem prover too weak. 3013 trivial. 0 not checked. [2023-12-24 06:37:10,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:37:11,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1971127561] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 06:37:11,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 06:37:11,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2023-12-24 06:37:11,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848684826] [2023-12-24 06:37:11,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 06:37:11,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 06:37:11,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:37:11,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 06:37:11,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-12-24 06:37:11,632 INFO L87 Difference]: Start difference. First operand 666 states and 1001 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-24 06:37:21,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:37:25,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:37:29,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:37:33,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:37:37,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:37:41,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:37:45,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:37:49,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:37:53,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:37:57,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:38:01,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:38:05,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:38:09,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:38:11,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:38:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:38:12,314 INFO L93 Difference]: Finished difference Result 1436 states and 2156 transitions. [2023-12-24 06:38:12,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 06:38:12,315 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 329 [2023-12-24 06:38:12,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:38:12,319 INFO L225 Difference]: With dead ends: 1436 [2023-12-24 06:38:12,319 INFO L226 Difference]: Without dead ends: 893 [2023-12-24 06:38:12,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 876 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2023-12-24 06:38:12,321 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 407 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 86 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.0s IncrementalHoareTripleChecker+Time [2023-12-24 06:38:12,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 993 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 684 Invalid, 13 Unknown, 0 Unchecked, 60.0s Time] [2023-12-24 06:38:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2023-12-24 06:38:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 881. [2023-12-24 06:38:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 591 states have (on average 1.3587140439932317) internal successors, (803), 591 states have internal predecessors, (803), 255 states have call successors, (255), 34 states have call predecessors, (255), 34 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2023-12-24 06:38:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1313 transitions. [2023-12-24 06:38:12,375 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1313 transitions. Word has length 329 [2023-12-24 06:38:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:38:12,375 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1313 transitions. [2023-12-24 06:38:12,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-24 06:38:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1313 transitions. [2023-12-24 06:38:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-12-24 06:38:12,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:38:12,377 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:38:12,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-24 06:38:12,609 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 (14)] Forceful destruction successful, exit code 0 [2023-12-24 06:38:12,785 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 [2023-12-24 06:38:12,785 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:38:12,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:38:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash 204209684, now seen corresponding path program 1 times [2023-12-24 06:38:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:38:12,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636301319] [2023-12-24 06:38:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:38:12,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:38:12,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:38:12,787 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 06:38:12,787 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 (16)] Waiting until timeout for monitored process [2023-12-24 06:38:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:38:13,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 06:38:13,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:38:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 1268 proven. 129 refuted. 0 times theorem prover too weak. 3703 trivial. 0 not checked. [2023-12-24 06:38:16,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:38:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 21 proven. 129 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2023-12-24 06:38:18,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:38:18,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636301319] [2023-12-24 06:38:18,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636301319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 06:38:18,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 06:38:18,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-24 06:38:18,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700316218] [2023-12-24 06:38:18,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 06:38:18,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 06:38:18,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:38:18,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 06:38:18,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 06:38:18,364 INFO L87 Difference]: Start difference. First operand 881 states and 1313 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-24 06:38:19,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:38:26,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:38:30,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:38:34,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:38:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:38:34,291 INFO L93 Difference]: Finished difference Result 1680 states and 2492 transitions. [2023-12-24 06:38:34,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 06:38:34,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 329 [2023-12-24 06:38:34,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:38:34,436 INFO L225 Difference]: With dead ends: 1680 [2023-12-24 06:38:34,436 INFO L226 Difference]: Without dead ends: 923 [2023-12-24 06:38:34,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 650 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-24 06:38:34,439 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 100 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-12-24 06:38:34,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 445 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 283 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2023-12-24 06:38:34,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-12-24 06:38:34,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 901. [2023-12-24 06:38:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 606 states have (on average 1.3333333333333333) internal successors, (808), 606 states have internal predecessors, (808), 255 states have call successors, (255), 39 states have call predecessors, (255), 39 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2023-12-24 06:38:34,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1318 transitions. [2023-12-24 06:38:34,531 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1318 transitions. Word has length 329 [2023-12-24 06:38:34,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:38:34,531 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1318 transitions. [2023-12-24 06:38:34,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-24 06:38:34,532 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1318 transitions. [2023-12-24 06:38:34,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2023-12-24 06:38:34,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:38:34,533 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:38:34,559 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 (16)] Forceful destruction successful, exit code 0 [2023-12-24 06:38:34,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:38:34,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:38:34,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:38:34,745 INFO L85 PathProgramCache]: Analyzing trace with hash 852496489, now seen corresponding path program 1 times [2023-12-24 06:38:34,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:38:34,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791624384] [2023-12-24 06:38:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:38:34,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:38:34,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:38:34,747 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 06:38:34,748 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 (17)] Waiting until timeout for monitored process [2023-12-24 06:38:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:38:35,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 06:38:35,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:38:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 488 proven. 282 refuted. 0 times theorem prover too weak. 4330 trivial. 0 not checked. [2023-12-24 06:38:43,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:38:43,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:38:43,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791624384] [2023-12-24 06:38:43,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791624384] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 06:38:43,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1708155418] [2023-12-24 06:38:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:38:43,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 06:38:43,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 06:38:43,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 06:38:43,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-24 06:38:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:38:46,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 06:38:46,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:38:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 438 proven. 144 refuted. 0 times theorem prover too weak. 4518 trivial. 0 not checked. [2023-12-24 06:38:49,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:38:50,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1708155418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 06:38:50,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 06:38:50,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2023-12-24 06:38:50,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617643089] [2023-12-24 06:38:50,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 06:38:50,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 06:38:50,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:38:50,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 06:38:50,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-24 06:38:50,355 INFO L87 Difference]: Start difference. First operand 901 states and 1318 transitions. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 3 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2023-12-24 06:38:58,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:39:02,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:39:06,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:39:10,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:39:14,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:39:18,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:39:22,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 06:39:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:39:22,132 INFO L93 Difference]: Finished difference Result 1689 states and 2475 transitions. [2023-12-24 06:39:22,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 06:39:22,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 3 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) Word has length 330 [2023-12-24 06:39:22,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:39:22,270 INFO L225 Difference]: With dead ends: 1689 [2023-12-24 06:39:22,270 INFO L226 Difference]: Without dead ends: 923 [2023-12-24 06:39:22,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-12-24 06:39:22,272 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 177 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 11 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2023-12-24 06:39:22,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 718 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 460 Invalid, 7 Unknown, 0 Unchecked, 31.2s Time] [2023-12-24 06:39:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-12-24 06:39:22,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 901. [2023-12-24 06:39:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 606 states have (on average 1.3234323432343233) internal successors, (802), 606 states have internal predecessors, (802), 255 states have call successors, (255), 39 states have call predecessors, (255), 39 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2023-12-24 06:39:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1312 transitions. [2023-12-24 06:39:22,323 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1312 transitions. Word has length 330 [2023-12-24 06:39:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:39:22,324 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1312 transitions. [2023-12-24 06:39:22,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 3 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2023-12-24 06:39:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1312 transitions. [2023-12-24 06:39:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2023-12-24 06:39:22,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:39:22,326 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:39:22,350 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 (17)] Forceful destruction successful, exit code 0 [2023-12-24 06:39:22,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-24 06:39:22,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 06:39:22,740 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:39:22,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:39:22,741 INFO L85 PathProgramCache]: Analyzing trace with hash -836447253, now seen corresponding path program 1 times [2023-12-24 06:39:22,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:39:22,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804234093] [2023-12-24 06:39:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:39:22,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:39:22,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:39:22,742 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 06:39:22,743 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 (19)] Waiting until timeout for monitored process [2023-12-24 06:39:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:39:25,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 119 conjunts are in the unsatisfiable core [2023-12-24 06:39:25,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:46:06,629 WARN L293 SmtUtils]: Spent 1.24m on a formula simplification that was a NOOP. DAG size: 126 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 06:46:35,887 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 (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 06:46:35,887 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 06:46:36,911 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 (19)] Forceful destruction successful, exit code 0 [2023-12-24 06:46:37,039 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 06:46:37,040 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 331 with TraceHistMax 51,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-24 06:46:37,043 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 06:46:37,044 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 06:46:37,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 06:46:37 BoogieIcfgContainer [2023-12-24 06:46:37,046 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 06:46:37,046 INFO L158 Benchmark]: Toolchain (without parser) took 871798.86ms. Allocated memory was 238.0MB in the beginning and 309.3MB in the end (delta: 71.3MB). Free memory was 173.7MB in the beginning and 94.7MB in the end (delta: 79.0MB). Peak memory consumption was 151.0MB. Max. memory is 8.0GB. [2023-12-24 06:46:37,046 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 238.0MB. Free memory is still 187.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 06:46:37,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.52ms. Allocated memory was 238.0MB in the beginning and 309.3MB in the end (delta: 71.3MB). Free memory was 173.4MB in the beginning and 267.2MB in the end (delta: -93.7MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-24 06:46:37,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.40ms. Allocated memory is still 309.3MB. Free memory was 267.2MB in the beginning and 262.5MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 06:46:37,047 INFO L158 Benchmark]: Boogie Preprocessor took 108.97ms. Allocated memory is still 309.3MB. Free memory was 262.5MB in the beginning and 253.5MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-24 06:46:37,047 INFO L158 Benchmark]: RCFGBuilder took 7286.92ms. Allocated memory is still 309.3MB. Free memory was 253.0MB in the beginning and 268.2MB in the end (delta: -15.2MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2023-12-24 06:46:37,047 INFO L158 Benchmark]: TraceAbstraction took 863924.28ms. Allocated memory is still 309.3MB. Free memory was 267.7MB in the beginning and 94.7MB in the end (delta: 173.0MB). Peak memory consumption was 173.0MB. Max. memory is 8.0GB. [2023-12-24 06:46:37,048 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 238.0MB. Free memory is still 187.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 415.52ms. Allocated memory was 238.0MB in the beginning and 309.3MB in the end (delta: 71.3MB). Free memory was 173.4MB in the beginning and 267.2MB in the end (delta: -93.7MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.40ms. Allocated memory is still 309.3MB. Free memory was 267.2MB in the beginning and 262.5MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 108.97ms. Allocated memory is still 309.3MB. Free memory was 262.5MB in the beginning and 253.5MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 7286.92ms. Allocated memory is still 309.3MB. Free memory was 253.0MB in the beginning and 268.2MB in the end (delta: -15.2MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. * TraceAbstraction took 863924.28ms. Allocated memory is still 309.3MB. Free memory was 267.7MB in the beginning and 94.7MB in the end (delta: 173.0MB). Peak memory consumption was 173.0MB. 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 331 with TraceHistMax 51,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 153 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 863.9s, OverallIterations: 12, TraceHistogramMax: 51, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 332.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 mSolverCounterUnknown, 3148 SdHoareTripleChecker+Valid, 326.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3044 mSDsluCounter, 7681 SdHoareTripleChecker+Invalid, 324.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5204 mSDsCounter, 751 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3149 IncrementalHoareTripleChecker+Invalid, 3972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 751 mSolverCounterUnsat, 2477 mSDtfsCounter, 3149 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6890 GetRequests, 6749 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=10, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 686 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 15.5s SatisfiabilityAnalysisTime, 76.3s InterpolantComputationTime, 5583 NumberOfCodeBlocks, 5583 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6221 ConstructedInterpolants, 4 QuantifiedInterpolants, 22003 SizeOfPredicates, 63 NumberOfNonLiveVariables, 9357 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 94659/96900 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