/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-89.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 07:38:34,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 07:38:34,846 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 07:38:34,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 07:38:34,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 07:38:34,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 07:38:34,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 07:38:34,875 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 07:38:34,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 07:38:34,878 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 07:38:34,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 07:38:34,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 07:38:34,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 07:38:34,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 07:38:34,881 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 07:38:34,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 07:38:34,881 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 07:38:34,881 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 07:38:34,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 07:38:34,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 07:38:34,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 07:38:34,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 07:38:34,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 07:38:34,883 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 07:38:34,883 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 07:38:34,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 07:38:34,884 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 07:38:34,884 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 07:38:34,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 07:38:34,884 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 07:38:34,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 07:38:34,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 07:38:34,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 07:38:34,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 07:38:34,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 07:38:34,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 07:38:34,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 07:38:34,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 07:38:34,886 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 07:38:34,886 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 07:38:34,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 07:38:34,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 07:38:34,886 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 07:38:34,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 07:38:34,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 07:38:34,887 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 07:38:34,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 07:38:35,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 07:38:35,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 07:38:35,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 07:38:35,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 07:38:35,129 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 07:38:35,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-89.i [2023-12-24 07:38:36,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 07:38:36,545 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 07:38:36,545 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-89.i [2023-12-24 07:38:36,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a416f4fc8/eeb6dc1b2648441a8957b09a584889c4/FLAG20eb59fb1 [2023-12-24 07:38:36,571 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a416f4fc8/eeb6dc1b2648441a8957b09a584889c4 [2023-12-24 07:38:36,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 07:38:36,575 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 07:38:36,576 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 07:38:36,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 07:38:36,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 07:38:36,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:38:36" (1/1) ... [2023-12-24 07:38:36,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718cffdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:36, skipping insertion in model container [2023-12-24 07:38:36,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:38:36" (1/1) ... [2023-12-24 07:38:36,628 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 07:38:36,811 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-89.i[916,929] [2023-12-24 07:38:36,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 07:38:36,962 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 07:38:36,972 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-89.i[916,929] [2023-12-24 07:38:37,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 07:38:37,065 INFO L206 MainTranslator]: Completed translation [2023-12-24 07:38:37,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37 WrapperNode [2023-12-24 07:38:37,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 07:38:37,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 07:38:37,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 07:38:37,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 07:38:37,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,140 INFO L138 Inliner]: procedures = 27, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 339 [2023-12-24 07:38:37,140 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 07:38:37,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 07:38:37,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 07:38:37,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 07:38:37,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,201 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 07:38:37,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 07:38:37,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 07:38:37,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 07:38:37,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 07:38:37,246 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (1/1) ... [2023-12-24 07:38:37,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 07:38:37,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 07:38:37,290 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 07:38:37,307 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 07:38:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 07:38:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 07:38:37,325 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 07:38:37,327 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 07:38:37,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 07:38:37,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 07:38:37,475 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 07:38:37,477 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 07:38:44,122 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 07:38:44,174 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 07:38:44,174 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 07:38:44,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:38:44 BoogieIcfgContainer [2023-12-24 07:38:44,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 07:38:44,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 07:38:44,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 07:38:44,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 07:38:44,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 07:38:36" (1/3) ... [2023-12-24 07:38:44,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b91f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:38:44, skipping insertion in model container [2023-12-24 07:38:44,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:38:37" (2/3) ... [2023-12-24 07:38:44,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b91f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:38:44, skipping insertion in model container [2023-12-24 07:38:44,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:38:44" (3/3) ... [2023-12-24 07:38:44,180 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-89.i [2023-12-24 07:38:44,192 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 07:38:44,192 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 07:38:44,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 07:38:44,237 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;@5af0a3f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 07:38:44,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 07:38:44,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 95 states have (on average 1.568421052631579) internal successors, (149), 96 states have internal predecessors, (149), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-24 07:38:44,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-24 07:38:44,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:38:44,258 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:44,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:38:44,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:38:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1948651482, now seen corresponding path program 1 times [2023-12-24 07:38:44,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:38:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469451145] [2023-12-24 07:38:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:38:44,280 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 07:38:44,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:38:44,294 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 07:38:44,295 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 07:38:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:38:44,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 07:38:44,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:38:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1812 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2023-12-24 07:38:44,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:38:44,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:38:44,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469451145] [2023-12-24 07:38:44,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469451145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:38:44,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 07:38:44,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 07:38:44,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30278104] [2023-12-24 07:38:44,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:38:45,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 07:38:45,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:38:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 07:38:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 07:38:45,030 INFO L87 Difference]: Start difference. First operand has 141 states, 95 states have (on average 1.568421052631579) internal successors, (149), 96 states have internal predecessors, (149), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-24 07:38:49,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:38:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:38:49,259 INFO L93 Difference]: Finished difference Result 279 states and 511 transitions. [2023-12-24 07:38:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 07:38:49,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 279 [2023-12-24 07:38:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:38:49,341 INFO L225 Difference]: With dead ends: 279 [2023-12-24 07:38:49,341 INFO L226 Difference]: Without dead ends: 139 [2023-12-24 07:38:49,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 278 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 07:38:49,348 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 07:38:49,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 07:38:49,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-24 07:38:49,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-12-24 07:38:49,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 94 states have (on average 1.5319148936170213) internal successors, (144), 94 states have internal predecessors, (144), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-24 07:38:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 230 transitions. [2023-12-24 07:38:49,388 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 230 transitions. Word has length 279 [2023-12-24 07:38:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:38:49,388 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 230 transitions. [2023-12-24 07:38:49,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-24 07:38:49,389 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 230 transitions. [2023-12-24 07:38:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-24 07:38:49,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:38:49,393 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:49,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 07:38:49,607 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 07:38:49,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:38:49,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:38:49,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1692738252, now seen corresponding path program 1 times [2023-12-24 07:38:49,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:38:49,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062196522] [2023-12-24 07:38:49,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:38:49,610 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 07:38:49,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:38:49,614 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 07:38:49,615 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 07:38:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:38:50,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 07:38:50,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:38:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 658 proven. 114 refuted. 0 times theorem prover too weak. 2840 trivial. 0 not checked. [2023-12-24 07:38:52,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:38:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 12 proven. 114 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-12-24 07:38:53,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:38:53,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062196522] [2023-12-24 07:38:53,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062196522] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 07:38:53,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:38:53,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-24 07:38:53,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321080799] [2023-12-24 07:38:53,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:38:53,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 07:38:53,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:38:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 07:38:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 07:38:53,011 INFO L87 Difference]: Start difference. First operand 139 states and 230 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-24 07:38:58,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:02,545 WARN L539 Checker$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 07:39:05,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:05,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:39:05,665 INFO L93 Difference]: Finished difference Result 286 states and 467 transitions. [2023-12-24 07:39:05,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 07:39:05,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 279 [2023-12-24 07:39:05,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:39:05,668 INFO L225 Difference]: With dead ends: 286 [2023-12-24 07:39:05,668 INFO L226 Difference]: Without dead ends: 148 [2023-12-24 07:39:05,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 550 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-24 07:39:05,670 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 209 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-24 07:39:05,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 405 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 280 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2023-12-24 07:39:05,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-24 07:39:05,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2023-12-24 07:39:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 95 states have (on average 1.4526315789473685) internal successors, (138), 96 states have internal predecessors, (138), 47 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-24 07:39:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 232 transitions. [2023-12-24 07:39:05,684 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 232 transitions. Word has length 279 [2023-12-24 07:39:05,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:39:05,685 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 232 transitions. [2023-12-24 07:39:05,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-24 07:39:05,685 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 232 transitions. [2023-12-24 07:39:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-24 07:39:05,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:39:05,688 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:05,724 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 07:39:05,901 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 07:39:05,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:39:05,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:39:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash -933293928, now seen corresponding path program 1 times [2023-12-24 07:39:05,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:39:05,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041863800] [2023-12-24 07:39:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:39:05,903 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 07:39:05,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:39:05,904 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 07:39:05,908 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 07:39:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:39:06,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 07:39:06,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:39:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-24 07:39:06,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:39:06,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:39:06,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041863800] [2023-12-24 07:39:06,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041863800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:39:06,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 07:39:06,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 07:39:06,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300872676] [2023-12-24 07:39:06,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:39:06,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 07:39:06,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:39:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 07:39:06,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 07:39:06,564 INFO L87 Difference]: Start difference. First operand 145 states and 232 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-24 07:39:10,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:14,784 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 07:39:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:39:14,788 INFO L93 Difference]: Finished difference Result 283 states and 453 transitions. [2023-12-24 07:39:14,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 07:39:14,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 280 [2023-12-24 07:39:14,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:39:14,868 INFO L225 Difference]: With dead ends: 283 [2023-12-24 07:39:14,869 INFO L226 Difference]: Without dead ends: 145 [2023-12-24 07:39:14,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 07:39:14,870 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 96 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-24 07:39:14,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 331 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2023-12-24 07:39:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-24 07:39:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-24 07:39:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 95 states have (on average 1.4421052631578948) internal successors, (137), 96 states have internal predecessors, (137), 47 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-24 07:39:14,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 231 transitions. [2023-12-24 07:39:14,888 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 231 transitions. Word has length 280 [2023-12-24 07:39:14,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:39:14,889 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 231 transitions. [2023-12-24 07:39:14,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-24 07:39:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 231 transitions. [2023-12-24 07:39:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-24 07:39:14,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:39:14,894 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:14,917 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 07:39:15,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 07:39:15,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:39:15,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:39:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash -273762406, now seen corresponding path program 1 times [2023-12-24 07:39:15,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:39:15,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926004763] [2023-12-24 07:39:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:39:15,114 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 07:39:15,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:39:15,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 07:39:15,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 07:39:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:39:15,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 07:39:15,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:39:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 918 proven. 108 refuted. 0 times theorem prover too weak. 2586 trivial. 0 not checked. [2023-12-24 07:39:17,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:39:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 18 proven. 108 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-12-24 07:39:18,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:39:18,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926004763] [2023-12-24 07:39:18,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926004763] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 07:39:18,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:39:18,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-24 07:39:18,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521939456] [2023-12-24 07:39:18,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:39:18,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 07:39:18,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:39:18,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 07:39:18,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 07:39:18,413 INFO L87 Difference]: Start difference. First operand 145 states and 231 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-24 07:39:24,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:28,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:32,829 WARN L539 Checker$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 07:39:33,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:39:33,073 INFO L93 Difference]: Finished difference Result 297 states and 465 transitions. [2023-12-24 07:39:33,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 07:39:33,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 280 [2023-12-24 07:39:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:39:33,076 INFO L225 Difference]: With dead ends: 297 [2023-12-24 07:39:33,076 INFO L226 Difference]: Without dead ends: 159 [2023-12-24 07:39:33,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 552 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-24 07:39:33,077 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 189 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-24 07:39:33,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 405 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 301 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2023-12-24 07:39:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-24 07:39:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2023-12-24 07:39:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 102 states have (on average 1.3823529411764706) internal successors, (141), 103 states have internal predecessors, (141), 49 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-24 07:39:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 239 transitions. [2023-12-24 07:39:33,088 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 239 transitions. Word has length 280 [2023-12-24 07:39:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:39:33,089 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 239 transitions. [2023-12-24 07:39:33,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-24 07:39:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 239 transitions. [2023-12-24 07:39:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-24 07:39:33,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:39:33,091 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:33,113 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 (5)] Forceful destruction successful, exit code 0 [2023-12-24 07:39:33,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 07:39:33,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:39:33,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:39:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash -211722792, now seen corresponding path program 1 times [2023-12-24 07:39:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:39:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807827039] [2023-12-24 07:39:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:39:33,293 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 07:39:33,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:39:33,295 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 07:39:33,309 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 07:39:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:39:33,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 07:39:33,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:39:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 86 proven. 246 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-12-24 07:39:38,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:39:38,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:39:38,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807827039] [2023-12-24 07:39:38,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807827039] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:39:38,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1011995959] [2023-12-24 07:39:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:39:38,606 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:39:38,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:39:38,645 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 07:39:38,648 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 07:39:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:39:39,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 07:39:39,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:39:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-24 07:39:39,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:39:39,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1011995959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:39:39,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 07:39:39,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-24 07:39:39,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344745643] [2023-12-24 07:39:39,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:39:39,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 07:39:39,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:39:39,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 07:39:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 07:39:39,663 INFO L87 Difference]: Start difference. First operand 156 states and 239 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-24 07:39:46,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:50,783 WARN L539 Checker$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 07:39:55,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:59,071 WARN L539 Checker$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 07:40:03,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:40:07,080 WARN L539 Checker$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 07:40:11,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:40:15,345 WARN L539 Checker$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 07:40:19,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:40:23,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:40:27,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:40:31,617 WARN L539 Checker$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 07:40:35,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:40:39,935 WARN L539 Checker$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 07:40:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:40:40,059 INFO L93 Difference]: Finished difference Result 510 states and 783 transitions. [2023-12-24 07:40:40,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 07:40:40,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 280 [2023-12-24 07:40:40,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:40:40,062 INFO L225 Difference]: With dead ends: 510 [2023-12-24 07:40:40,062 INFO L226 Difference]: Without dead ends: 368 [2023-12-24 07:40:40,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-24 07:40:40,063 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 408 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 30 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.2s IncrementalHoareTripleChecker+Time [2023-12-24 07:40:40,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 816 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 168 Invalid, 14 Unknown, 0 Unchecked, 60.2s Time] [2023-12-24 07:40:40,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-24 07:40:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 329. [2023-12-24 07:40:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 221 states have (on average 1.3710407239819005) internal successors, (303), 224 states have internal predecessors, (303), 98 states have call successors, (98), 9 states have call predecessors, (98), 9 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 07:40:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 499 transitions. [2023-12-24 07:40:40,091 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 499 transitions. Word has length 280 [2023-12-24 07:40:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:40:40,091 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 499 transitions. [2023-12-24 07:40:40,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-24 07:40:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 499 transitions. [2023-12-24 07:40:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-24 07:40:40,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:40:40,093 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:40,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-24 07:40:40,316 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 07:40:40,507 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 07:40:40,507 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:40:40,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:40:40,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2089099798, now seen corresponding path program 1 times [2023-12-24 07:40:40,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:40:40,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108083428] [2023-12-24 07:40:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:40:40,508 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 07:40:40,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:40:40,510 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 07:40:40,511 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 07:40:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:40:41,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 07:40:41,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:40:45,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 86 proven. 246 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-12-24 07:40:45,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:40:45,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:40:45,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108083428] [2023-12-24 07:40:45,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108083428] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:40:45,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [173568654] [2023-12-24 07:40:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:40:45,792 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:40:45,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:40:45,793 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 07:40:45,794 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 07:40:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:40:47,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 07:40:47,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:40:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-24 07:40:54,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:40:54,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [173568654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:40:54,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 07:40:54,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2023-12-24 07:40:54,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489767428] [2023-12-24 07:40:54,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:40:54,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 07:40:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:40:54,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 07:40:54,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-24 07:40:54,930 INFO L87 Difference]: Start difference. First operand 329 states and 499 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-24 07:41:04,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:08,321 WARN L539 Checker$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 07:41:12,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:16,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:20,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:24,703 WARN L539 Checker$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 07:41:28,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:32,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:36,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:40,997 WARN L539 Checker$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 07:41:47,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:51,107 WARN L539 Checker$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 07:41:55,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:59,125 WARN L539 Checker$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 07:42:03,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:42:07,457 WARN L539 Checker$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 07:42:11,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:42:15,476 WARN L539 Checker$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 07:42:19,483 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 07:42:21,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:42:21,457 INFO L93 Difference]: Finished difference Result 1688 states and 2529 transitions. [2023-12-24 07:42:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 07:42:21,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 280 [2023-12-24 07:42:21,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:42:21,469 INFO L225 Difference]: With dead ends: 1688 [2023-12-24 07:42:21,469 INFO L226 Difference]: Without dead ends: 1373 [2023-12-24 07:42:21,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-12-24 07:42:21,473 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 711 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 168 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.6s IncrementalHoareTripleChecker+Time [2023-12-24 07:42:21,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1352 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1039 Invalid, 19 Unknown, 0 Unchecked, 85.6s Time] [2023-12-24 07:42:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2023-12-24 07:42:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1023. [2023-12-24 07:42:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 763 states have (on average 1.416775884665793) internal successors, (1081), 774 states have internal predecessors, (1081), 227 states have call successors, (227), 32 states have call predecessors, (227), 32 states have return successors, (227), 216 states have call predecessors, (227), 227 states have call successors, (227) [2023-12-24 07:42:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1535 transitions. [2023-12-24 07:42:21,574 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1535 transitions. Word has length 280 [2023-12-24 07:42:21,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:42:21,574 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1535 transitions. [2023-12-24 07:42:21,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-24 07:42:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1535 transitions. [2023-12-24 07:42:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-24 07:42:21,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:42:21,578 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:21,593 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 07:42:21,812 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 07:42:22,003 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 07:42:22,003 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:42:22,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:42:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1077982548, now seen corresponding path program 1 times [2023-12-24 07:42:22,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:42:22,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236148609] [2023-12-24 07:42:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:42:22,005 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 07:42:22,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:42:22,011 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 07:42:22,012 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 07:42:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:42:22,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 07:42:22,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:42:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 86 proven. 246 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-12-24 07:42:27,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:42:27,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:42:27,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236148609] [2023-12-24 07:42:27,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236148609] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:42:27,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [113104190] [2023-12-24 07:42:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:42:27,403 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:42:27,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:42:27,404 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 07:42:27,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-24 07:42:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:42:29,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 07:42:29,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:42:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1428 proven. 93 refuted. 0 times theorem prover too weak. 2091 trivial. 0 not checked. [2023-12-24 07:42:31,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:42:31,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [113104190] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:42:31,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:42:31,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2023-12-24 07:42:31,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811906785] [2023-12-24 07:42:31,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:42:31,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 07:42:31,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:42:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 07:42:31,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-24 07:42:31,716 INFO L87 Difference]: Start difference. First operand 1023 states and 1535 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 9 states have internal predecessors, (129), 4 states have call successors, (85), 4 states have call predecessors, (85), 5 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2023-12-24 07:42:39,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:42:43,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:42:47,218 WARN L539 Checker$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 07:42:51,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:42:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:42:51,534 INFO L93 Difference]: Finished difference Result 1890 states and 2774 transitions. [2023-12-24 07:42:51,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 07:42:51,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 9 states have internal predecessors, (129), 4 states have call successors, (85), 4 states have call predecessors, (85), 5 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) Word has length 280 [2023-12-24 07:42:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:42:51,631 INFO L225 Difference]: With dead ends: 1890 [2023-12-24 07:42:51,632 INFO L226 Difference]: Without dead ends: 881 [2023-12-24 07:42:51,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2023-12-24 07:42:51,634 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 290 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 29 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-12-24 07:42:51,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 604 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 434 Invalid, 4 Unknown, 0 Unchecked, 19.0s Time] [2023-12-24 07:42:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-12-24 07:42:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 871. [2023-12-24 07:42:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 638 states have (on average 1.341692789968652) internal successors, (856), 645 states have internal predecessors, (856), 187 states have call successors, (187), 45 states have call predecessors, (187), 45 states have return successors, (187), 180 states have call predecessors, (187), 187 states have call successors, (187) [2023-12-24 07:42:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1230 transitions. [2023-12-24 07:42:51,678 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1230 transitions. Word has length 280 [2023-12-24 07:42:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:42:51,678 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1230 transitions. [2023-12-24 07:42:51,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 9 states have internal predecessors, (129), 4 states have call successors, (85), 4 states have call predecessors, (85), 5 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2023-12-24 07:42:51,679 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1230 transitions. [2023-12-24 07:42:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-24 07:42:51,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:42:51,680 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:51,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-24 07:42:51,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 07:42:52,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 07:42:52,093 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:42:52,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:42:52,094 INFO L85 PathProgramCache]: Analyzing trace with hash 852133878, now seen corresponding path program 1 times [2023-12-24 07:42:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:42:52,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598193748] [2023-12-24 07:42:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:42:52,095 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 07:42:52,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:42:52,096 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 07:42:52,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 07:42:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:42:52,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 07:42:52,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:42:54,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-24 07:42:54,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:42:54,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:42:54,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598193748] [2023-12-24 07:42:54,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598193748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:42:54,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 07:42:54,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 07:42:54,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088620260] [2023-12-24 07:42:54,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:42:54,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 07:42:54,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:42:54,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 07:42:54,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 07:42:54,842 INFO L87 Difference]: Start difference. First operand 871 states and 1230 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-24 07:42:59,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:43:03,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:43:07,216 WARN L539 Checker$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 07:43:11,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:43:15,226 WARN L539 Checker$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 07:43:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:43:15,375 INFO L93 Difference]: Finished difference Result 2569 states and 3640 transitions. [2023-12-24 07:43:15,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 07:43:15,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 281 [2023-12-24 07:43:15,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:43:15,382 INFO L225 Difference]: With dead ends: 2569 [2023-12-24 07:43:15,382 INFO L226 Difference]: Without dead ends: 1720 [2023-12-24 07:43:15,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 278 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 07:43:15,384 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 110 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2023-12-24 07:43:15,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 618 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2023-12-24 07:43:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2023-12-24 07:43:15,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1569. [2023-12-24 07:43:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1185 states have (on average 1.358649789029536) internal successors, (1610), 1196 states have internal predecessors, (1610), 308 states have call successors, (308), 75 states have call predecessors, (308), 75 states have return successors, (308), 297 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-24 07:43:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2226 transitions. [2023-12-24 07:43:15,527 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2226 transitions. Word has length 281 [2023-12-24 07:43:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:43:15,527 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2226 transitions. [2023-12-24 07:43:15,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-24 07:43:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2226 transitions. [2023-12-24 07:43:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-24 07:43:15,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:43:15,530 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:15,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 07:43:15,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 07:43:15,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:43:15,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:43:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash -427729800, now seen corresponding path program 1 times [2023-12-24 07:43:15,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:43:15,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116943477] [2023-12-24 07:43:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:43:15,732 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 07:43:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:43:15,749 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 07:43:15,774 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 07:43:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:43:17,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 07:43:17,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:43:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2379 proven. 129 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 07:43:22,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:43:23,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:43:23,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116943477] [2023-12-24 07:43:23,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116943477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:43:23,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1136793118] [2023-12-24 07:43:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:43:23,417 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:43:23,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:43:23,418 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 07:43:23,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 07:43:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:43:29,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 07:43:29,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:43:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2361 proven. 126 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2023-12-24 07:43:37,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:43:38,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1136793118] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:43:38,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:43:38,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2023-12-24 07:43:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360803985] [2023-12-24 07:43:38,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:43:38,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 07:43:38,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:43:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 07:43:38,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-12-24 07:43:38,820 INFO L87 Difference]: Start difference. First operand 1569 states and 2226 transitions. Second operand has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 17 states have internal predecessors, (159), 6 states have call successors, (86), 6 states have call predecessors, (86), 10 states have return successors, (86), 6 states have call predecessors, (86), 6 states have call successors, (86) [2023-12-24 07:43:48,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:43:52,055 WARN L539 Checker$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 07:43:56,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:00,064 WARN L539 Checker$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 07:44:04,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:08,373 WARN L539 Checker$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 07:44:12,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:16,381 WARN L539 Checker$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 07:44:20,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:24,391 WARN L539 Checker$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 07:44:28,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:32,415 WARN L539 Checker$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 07:44:36,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:39,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:47,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:51,213 WARN L539 Checker$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 07:44:55,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:59,222 WARN L539 Checker$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 07:45:03,227 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 07:45:03,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:45:03,413 INFO L93 Difference]: Finished difference Result 5297 states and 7528 transitions. [2023-12-24 07:45:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 07:45:03,414 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 17 states have internal predecessors, (159), 6 states have call successors, (86), 6 states have call predecessors, (86), 10 states have return successors, (86), 6 states have call predecessors, (86), 6 states have call successors, (86) Word has length 281 [2023-12-24 07:45:03,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:45:03,427 INFO L225 Difference]: With dead ends: 5297 [2023-12-24 07:45:03,427 INFO L226 Difference]: Without dead ends: 3750 [2023-12-24 07:45:03,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=461, Invalid=1345, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 07:45:03,434 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 622 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 269 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.6s IncrementalHoareTripleChecker+Time [2023-12-24 07:45:03,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1473 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1071 Invalid, 18 Unknown, 0 Unchecked, 82.6s Time] [2023-12-24 07:45:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2023-12-24 07:45:03,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 2931. [2023-12-24 07:45:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2931 states, 2265 states have (on average 1.366887417218543) internal successors, (3096), 2281 states have internal predecessors, (3096), 527 states have call successors, (527), 138 states have call predecessors, (527), 138 states have return successors, (527), 511 states have call predecessors, (527), 527 states have call successors, (527) [2023-12-24 07:45:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 4150 transitions. [2023-12-24 07:45:03,631 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 4150 transitions. Word has length 281 [2023-12-24 07:45:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:45:03,631 INFO L495 AbstractCegarLoop]: Abstraction has 2931 states and 4150 transitions. [2023-12-24 07:45:03,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 17 states have internal predecessors, (159), 6 states have call successors, (86), 6 states have call predecessors, (86), 10 states have return successors, (86), 6 states have call predecessors, (86), 6 states have call successors, (86) [2023-12-24 07:45:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 4150 transitions. [2023-12-24 07:45:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-24 07:45:03,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:45:03,634 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:03,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-24 07:45:03,866 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 07:45:04,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 07:45:04,065 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:45:04,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:45:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash -616191096, now seen corresponding path program 1 times [2023-12-24 07:45:04,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:45:04,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200364613] [2023-12-24 07:45:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:45:04,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 07:45:04,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:45:04,069 INFO L229 MonitoredProcess]: Starting monitored process 15 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 07:45:04,072 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 (15)] Waiting until timeout for monitored process [2023-12-24 07:45:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:45:05,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 07:45:05,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:45:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2417 proven. 183 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-24 07:45:11,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:45:13,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:45:13,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200364613] [2023-12-24 07:45:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200364613] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:45:13,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [740434765] [2023-12-24 07:45:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:45:13,049 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:45:13,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:45:13,050 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 07:45:13,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-24 07:45:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:45:28,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 07:45:28,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:45:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2378 proven. 153 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-24 07:45:36,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:45:38,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [740434765] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:45:38,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:45:38,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2023-12-24 07:45:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532411468] [2023-12-24 07:45:38,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:45:38,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 07:45:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:45:38,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 07:45:38,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2023-12-24 07:45:38,605 INFO L87 Difference]: Start difference. First operand 2931 states and 4150 transitions. Second operand has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 9 states have call successors, (86), 9 states have call predecessors, (86), 13 states have return successors, (86), 9 states have call predecessors, (86), 9 states have call successors, (86) [2023-12-24 07:45:51,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:45:55,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:45:59,300 WARN L539 Checker$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 07:46:03,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:46:07,311 WARN L539 Checker$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 07:46:11,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:46:15,328 WARN L539 Checker$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 07:46:19,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:46:23,337 WARN L539 Checker$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 07:46:26,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:46:30,332 WARN L539 Checker$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 07:46:34,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:46:38,342 WARN L539 Checker$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 07:46:41,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:46:51,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:46:55,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:46:59,407 WARN L539 Checker$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 07:47:03,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:47:07,418 WARN L539 Checker$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 07:47:11,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:47:15,799 WARN L539 Checker$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 [0] [2023-12-24 07:47:19,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:47:23,809 WARN L539 Checker$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 07:47:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:47:23,987 INFO L93 Difference]: Finished difference Result 5460 states and 7616 transitions. [2023-12-24 07:47:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-24 07:47:23,988 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 9 states have call successors, (86), 9 states have call predecessors, (86), 13 states have return successors, (86), 9 states have call predecessors, (86), 9 states have call successors, (86) Word has length 282 [2023-12-24 07:47:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:47:24,001 INFO L225 Difference]: With dead ends: 5460 [2023-12-24 07:47:24,001 INFO L226 Difference]: Without dead ends: 4062 [2023-12-24 07:47:24,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=755, Invalid=2905, Unknown=0, NotChecked=0, Total=3660 [2023-12-24 07:47:24,005 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 469 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 221 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.5s IncrementalHoareTripleChecker+Time [2023-12-24 07:47:24,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 1613 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1737 Invalid, 21 Unknown, 0 Unchecked, 101.5s Time] [2023-12-24 07:47:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2023-12-24 07:47:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 3319. [2023-12-24 07:47:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 2529 states have (on average 1.3364966389877422) internal successors, (3380), 2553 states have internal predecessors, (3380), 595 states have call successors, (595), 194 states have call predecessors, (595), 194 states have return successors, (595), 571 states have call predecessors, (595), 595 states have call successors, (595) [2023-12-24 07:47:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 4570 transitions. [2023-12-24 07:47:24,238 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 4570 transitions. Word has length 282 [2023-12-24 07:47:24,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:47:24,239 INFO L495 AbstractCegarLoop]: Abstraction has 3319 states and 4570 transitions. [2023-12-24 07:47:24,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 9 states have call successors, (86), 9 states have call predecessors, (86), 13 states have return successors, (86), 9 states have call predecessors, (86), 9 states have call successors, (86) [2023-12-24 07:47:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 4570 transitions. [2023-12-24 07:47:24,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-24 07:47:24,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:47:24,241 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:24,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-24 07:47:24,475 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 (15)] Forceful destruction successful, exit code 0 [2023-12-24 07:47:24,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /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 07:47:24,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:47:24,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:47:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash -376254382, now seen corresponding path program 1 times [2023-12-24 07:47:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:47:24,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071307383] [2023-12-24 07:47:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:47:24,657 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 07:47:24,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:47:24,658 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 07:47:24,682 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 07:47:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:47:26,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-24 07:47:26,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:51:27,281 WARN L293 SmtUtils]: Spent 34.30s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 07:53:12,347 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 07:53:12,369 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 (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 07:53:13,073 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 07:53:13,097 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 07:53:13,274 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 [2023-12-24 07:53:13,275 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 283 with TraceHistMax 43,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-29-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-24 07:53:13,278 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:53:13,280 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 07:53:13,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 07:53:13 BoogieIcfgContainer [2023-12-24 07:53:13,282 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 07:53:13,282 INFO L158 Benchmark]: Toolchain (without parser) took 876708.03ms. Allocated memory is still 302.0MB. Free memory was 250.6MB in the beginning and 202.3MB in the end (delta: 48.4MB). Peak memory consumption was 47.9MB. Max. memory is 8.0GB. [2023-12-24 07:53:13,282 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 167.8MB. Free memory is still 120.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 07:53:13,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.63ms. Allocated memory is still 302.0MB. Free memory was 250.3MB in the beginning and 226.2MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-24 07:53:13,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.60ms. Allocated memory is still 302.0MB. Free memory was 226.2MB in the beginning and 221.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 07:53:13,283 INFO L158 Benchmark]: Boogie Preprocessor took 103.78ms. Allocated memory is still 302.0MB. Free memory was 221.7MB in the beginning and 212.9MB in the end (delta: 8.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-24 07:53:13,283 INFO L158 Benchmark]: RCFGBuilder took 6929.48ms. Allocated memory is still 302.0MB. Free memory was 212.9MB in the beginning and 225.8MB in the end (delta: -12.9MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2023-12-24 07:53:13,283 INFO L158 Benchmark]: TraceAbstraction took 869106.01ms. Allocated memory is still 302.0MB. Free memory was 225.2MB in the beginning and 202.3MB in the end (delta: 23.0MB). Peak memory consumption was 22.7MB. Max. memory is 8.0GB. [2023-12-24 07:53:13,284 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 167.8MB. Free memory is still 120.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 490.63ms. Allocated memory is still 302.0MB. Free memory was 250.3MB in the beginning and 226.2MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 73.60ms. Allocated memory is still 302.0MB. Free memory was 226.2MB in the beginning and 221.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 103.78ms. Allocated memory is still 302.0MB. Free memory was 221.7MB in the beginning and 212.9MB in the end (delta: 8.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 6929.48ms. Allocated memory is still 302.0MB. Free memory was 212.9MB in the beginning and 225.8MB in the end (delta: -12.9MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. * TraceAbstraction took 869106.01ms. Allocated memory is still 302.0MB. Free memory was 225.2MB in the beginning and 202.3MB in the end (delta: 23.0MB). Peak memory consumption was 22.7MB. 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 283 with TraceHistMax 43,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-29-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 141 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 869.1s, OverallIterations: 11, TraceHistogramMax: 43, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 417.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 mSolverCounterUnknown, 3149 SdHoareTripleChecker+Valid, 408.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3104 mSDsluCounter, 7844 SdHoareTripleChecker+Invalid, 404.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5869 mSDsCounter, 753 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5056 IncrementalHoareTripleChecker+Invalid, 5898 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 753 mSolverCounterUnsat, 1975 mSDtfsCounter, 5056 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5233 GetRequests, 5053 SyntacticMatches, 2 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1631 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3319occurred in iteration=10, InterpolantAutomatonStates: 134, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 2118 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 32.2s SatisfiabilityAnalysisTime, 65.6s InterpolantComputationTime, 4205 NumberOfCodeBlocks, 4205 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4747 ConstructedInterpolants, 4 QuantifiedInterpolants, 23387 SizeOfPredicates, 67 NumberOfNonLiveVariables, 7095 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 59538/61404 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