/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/neural-networks/softmax_9_unsafe.c-amalgamation.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 03:52:51,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 03:52:51,105 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 03:52:51,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 03:52:51,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 03:52:51,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 03:52:51,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 03:52:51,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 03:52:51,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 03:52:51,141 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 03:52:51,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 03:52:51,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 03:52:51,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 03:52:51,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 03:52:51,143 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 03:52:51,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 03:52:51,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 03:52:51,143 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 03:52:51,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 03:52:51,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 03:52:51,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 03:52:51,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 03:52:51,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 03:52:51,147 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 03:52:51,147 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 03:52:51,147 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 03:52:51,147 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 03:52:51,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 03:52:51,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 03:52:51,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 03:52:51,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 03:52:51,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 03:52:51,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 03:52:51,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 03:52:51,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 03:52:51,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 03:52:51,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 03:52:51,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 03:52:51,150 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 03:52:51,150 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 03:52:51,150 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 03:52:51,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 03:52:51,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 03:52:51,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 03:52:51,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 03:52:51,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 03:52:51,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 03:52:51,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 03:52:51,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 03:52:51,369 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 03:52:51,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/neural-networks/softmax_9_unsafe.c-amalgamation.i [2024-11-03 03:52:52,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 03:52:53,003 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 03:52:53,004 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/neural-networks/softmax_9_unsafe.c-amalgamation.i [2024-11-03 03:52:53,026 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85508de27/aca5180d7c14420db56f7d329f7dd80c/FLAG3bd2f3056 [2024-11-03 03:52:53,339 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85508de27/aca5180d7c14420db56f7d329f7dd80c [2024-11-03 03:52:53,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 03:52:53,343 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 03:52:53,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 03:52:53,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 03:52:53,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 03:52:53,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:53" (1/1) ... [2024-11-03 03:52:53,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c23b060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:53, skipping insertion in model container [2024-11-03 03:52:53,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:53" (1/1) ... [2024-11-03 03:52:53,411 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 03:52:53,864 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/neural-networks/softmax_9_unsafe.c-amalgamation.i[63690,63703] [2024-11-03 03:52:53,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 03:52:53,878 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 03:52:53,948 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/neural-networks/softmax_9_unsafe.c-amalgamation.i[63690,63703] [2024-11-03 03:52:53,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 03:52:54,097 INFO L204 MainTranslator]: Completed translation [2024-11-03 03:52:54,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54 WrapperNode [2024-11-03 03:52:54,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 03:52:54,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 03:52:54,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 03:52:54,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 03:52:54,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,145 INFO L138 Inliner]: procedures = 562, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 130 [2024-11-03 03:52:54,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 03:52:54,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 03:52:54,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 03:52:54,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 03:52:54,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,158 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,177 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 7, 4, 12]. 48 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 6 writes are split as follows [0, 0, 2, 4]. [2024-11-03 03:52:54,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 03:52:54,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 03:52:54,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 03:52:54,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 03:52:54,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (1/1) ... [2024-11-03 03:52:54,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 03:52:54,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 03:52:54,249 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) [2024-11-03 03:52:54,252 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 [2024-11-03 03:52:54,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-03 03:52:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-03 03:52:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-11-03 03:52:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-11-03 03:52:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 03:52:54,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 03:52:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 03:52:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-03 03:52:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-03 03:52:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 03:52:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 03:52:54,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 03:52:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-03 03:52:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-03 03:52:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-11-03 03:52:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-11-03 03:52:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 03:52:54,422 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 03:52:54,424 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 03:52:54,887 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-03 03:52:54,888 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 03:52:54,897 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 03:52:54,897 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-03 03:52:54,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:52:54 BoogieIcfgContainer [2024-11-03 03:52:54,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 03:52:54,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 03:52:54,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 03:52:54,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 03:52:54,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:52:53" (1/3) ... [2024-11-03 03:52:54,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c256e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:52:54, skipping insertion in model container [2024-11-03 03:52:54,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:54" (2/3) ... [2024-11-03 03:52:54,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c256e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:52:54, skipping insertion in model container [2024-11-03 03:52:54,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:52:54" (3/3) ... [2024-11-03 03:52:54,904 INFO L112 eAbstractionObserver]: Analyzing ICFG softmax_9_unsafe.c-amalgamation.i [2024-11-03 03:52:54,916 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 03:52:54,917 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 03:52:54,968 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 03:52:54,973 INFO L333 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, 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;@2d727a24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 03:52:54,973 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 03:52:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-03 03:52:54,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:52:54,981 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:52:54,982 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:52:54,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:52:54,987 INFO L85 PathProgramCache]: Analyzing trace with hash -209458876, now seen corresponding path program 1 times [2024-11-03 03:52:54,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:52:54,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828777287] [2024-11-03 03:52:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:52:54,994 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:52:54,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:52:54,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:52:54,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 03:52:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:52:55,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 03:52:55,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:52:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:52:55,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:52:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:52:55,180 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:52:55,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828777287] [2024-11-03 03:52:55,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [828777287] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 03:52:55,181 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 03:52:55,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 03:52:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777382631] [2024-11-03 03:52:55,184 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 03:52:55,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 03:52:55,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:52:55,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 03:52:55,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 03:52:55,205 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:55,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:52:55,216 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2024-11-03 03:52:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 03:52:55,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-03 03:52:55,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:52:55,225 INFO L225 Difference]: With dead ends: 55 [2024-11-03 03:52:55,225 INFO L226 Difference]: Without dead ends: 25 [2024-11-03 03:52:55,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 03:52:55,233 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 03:52:55,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 03:52:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-03 03:52:55,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-03 03:52:55,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-03 03:52:55,265 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 19 [2024-11-03 03:52:55,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:52:55,265 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-03 03:52:55,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:55,266 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-03 03:52:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-03 03:52:55,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:52:55,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:52:55,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 03:52:55,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:52:55,468 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:52:55,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:52:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1331555404, now seen corresponding path program 1 times [2024-11-03 03:52:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:52:55,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404082948] [2024-11-03 03:52:55,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:52:55,469 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:52:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:52:55,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:52:55,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 03:52:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:52:55,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 03:52:55,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:52:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:52:55,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:52:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:52:55,759 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:52:55,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404082948] [2024-11-03 03:52:55,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [404082948] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 03:52:55,760 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 03:52:55,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 03:52:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244612307] [2024-11-03 03:52:55,760 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 03:52:55,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 03:52:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:52:55,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 03:52:55,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 03:52:55,764 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:52:56,232 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-11-03 03:52:56,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 03:52:56,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-03 03:52:56,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:52:56,233 INFO L225 Difference]: With dead ends: 41 [2024-11-03 03:52:56,233 INFO L226 Difference]: Without dead ends: 29 [2024-11-03 03:52:56,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 03:52:56,235 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 03:52:56,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 03:52:56,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-03 03:52:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-03 03:52:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-03 03:52:56,240 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2024-11-03 03:52:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:52:56,241 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-03 03:52:56,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-03 03:52:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-03 03:52:56,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:52:56,242 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:52:56,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-03 03:52:56,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:52:56,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:52:56,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:52:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1764705076, now seen corresponding path program 1 times [2024-11-03 03:52:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:52:56,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984087187] [2024-11-03 03:52:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:52:56,446 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:52:56,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:52:56,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:52:56,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 03:52:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:52:56,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 03:52:56,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:52:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:52:56,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:52:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:52:57,001 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:52:57,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984087187] [2024-11-03 03:52:57,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1984087187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 03:52:57,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 03:52:57,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 03:52:57,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194846514] [2024-11-03 03:52:57,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 03:52:57,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 03:52:57,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:52:57,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 03:52:57,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-03 03:52:57,004 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:52:58,337 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-11-03 03:52:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 03:52:58,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-03 03:52:58,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:52:58,339 INFO L225 Difference]: With dead ends: 46 [2024-11-03 03:52:58,339 INFO L226 Difference]: Without dead ends: 34 [2024-11-03 03:52:58,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-03 03:52:58,340 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-03 03:52:58,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 75 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-03 03:52:58,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-03 03:52:58,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-03 03:52:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:58,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-03 03:52:58,346 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 25 [2024-11-03 03:52:58,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:52:58,346 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-03 03:52:58,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:58,347 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-03 03:52:58,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-03 03:52:58,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:52:58,348 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:52:58,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-03 03:52:58,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:52:58,548 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:52:58,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:52:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash -95427720, now seen corresponding path program 2 times [2024-11-03 03:52:58,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:52:58,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936196401] [2024-11-03 03:52:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:52:58,550 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:52:58,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:52:58,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:52:58,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 03:52:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:52:58,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 03:52:58,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:52:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 03:52:58,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:52:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 03:52:58,938 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:52:58,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936196401] [2024-11-03 03:52:58,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1936196401] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 03:52:58,939 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 03:52:58,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 03:52:58,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829527707] [2024-11-03 03:52:58,940 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 03:52:58,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 03:52:58,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:52:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 03:52:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 03:52:58,941 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:59,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:52:59,826 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2024-11-03 03:52:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 03:52:59,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-03 03:52:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:52:59,827 INFO L225 Difference]: With dead ends: 47 [2024-11-03 03:52:59,827 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 03:52:59,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-03 03:52:59,829 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-03 03:52:59,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 48 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-03 03:52:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 03:52:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 03:52:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-03 03:52:59,835 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 28 [2024-11-03 03:52:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:52:59,835 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-03 03:52:59,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:52:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-03 03:52:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-03 03:52:59,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:52:59,837 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:52:59,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-03 03:53:00,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:53:00,053 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:53:00,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:53:00,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1832680560, now seen corresponding path program 1 times [2024-11-03 03:53:00,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:53:00,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908137255] [2024-11-03 03:53:00,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:53:00,054 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:53:00,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:53:00,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:53:00,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 03:53:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:53:00,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 03:53:00,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:53:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 03:53:00,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:53:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 03:53:01,019 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:53:01,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908137255] [2024-11-03 03:53:01,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [908137255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 03:53:01,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 03:53:01,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 03:53:01,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927651490] [2024-11-03 03:53:01,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 03:53:01,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 03:53:01,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:53:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 03:53:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-03 03:53:01,023 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:53:03,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:53:03,099 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2024-11-03 03:53:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 03:53:03,099 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-03 03:53:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:53:03,100 INFO L225 Difference]: With dead ends: 58 [2024-11-03 03:53:03,100 INFO L226 Difference]: Without dead ends: 46 [2024-11-03 03:53:03,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-03 03:53:03,101 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-03 03:53:03,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 108 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-03 03:53:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-03 03:53:03,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-03 03:53:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:53:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2024-11-03 03:53:03,112 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 36 [2024-11-03 03:53:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:53:03,112 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2024-11-03 03:53:03,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:53:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2024-11-03 03:53:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-03 03:53:03,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:53:03,113 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:53:03,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-03 03:53:03,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:53:03,314 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:53:03,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:53:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash -175088280, now seen corresponding path program 2 times [2024-11-03 03:53:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:53:03,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323577621] [2024-11-03 03:53:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:53:03,315 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:53:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:53:03,316 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) [2024-11-03 03:53:03,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 03:53:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:53:04,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 03:53:04,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:53:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-03 03:53:04,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:53:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-03 03:53:04,482 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:53:04,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323577621] [2024-11-03 03:53:04,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1323577621] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 03:53:04,482 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 03:53:04,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 03:53:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139532309] [2024-11-03 03:53:04,482 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 03:53:04,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 03:53:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:53:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 03:53:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 03:53:04,485 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:53:04,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:53:04,575 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2024-11-03 03:53:04,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 03:53:04,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-03 03:53:04,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:53:04,576 INFO L225 Difference]: With dead ends: 52 [2024-11-03 03:53:04,576 INFO L226 Difference]: Without dead ends: 49 [2024-11-03 03:53:04,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 03:53:04,578 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 03:53:04,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 03:53:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-03 03:53:04,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-03 03:53:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:53:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2024-11-03 03:53:04,584 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 44 [2024-11-03 03:53:04,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:53:04,585 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2024-11-03 03:53:04,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:53:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2024-11-03 03:53:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 03:53:04,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:53:04,586 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:53:04,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-11-03 03:53:04,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:53:04,787 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:53:04,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:53:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash 822921252, now seen corresponding path program 1 times [2024-11-03 03:53:04,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:53:04,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72606266] [2024-11-03 03:53:04,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:53:04,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:53:04,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:53:04,789 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:53:04,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 03:53:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:53:06,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 03:53:06,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:53:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-03 03:53:06,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:53:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-03 03:53:06,153 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:53:06,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72606266] [2024-11-03 03:53:06,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [72606266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 03:53:06,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 03:53:06,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 03:53:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921417294] [2024-11-03 03:53:06,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 03:53:06,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 03:53:06,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:53:06,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 03:53:06,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 03:53:06,156 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:53:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:53:06,446 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2024-11-03 03:53:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 03:53:06,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-03 03:53:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:53:06,449 INFO L225 Difference]: With dead ends: 56 [2024-11-03 03:53:06,449 INFO L226 Difference]: Without dead ends: 53 [2024-11-03 03:53:06,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 03:53:06,450 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 03:53:06,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 03:53:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-03 03:53:06,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-03 03:53:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:53:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2024-11-03 03:53:06,458 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 48 [2024-11-03 03:53:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:53:06,459 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2024-11-03 03:53:06,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 03:53:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2024-11-03 03:53:06,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 03:53:06,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:53:06,460 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:53:06,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-03 03:53:06,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:53:06,660 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:53:06,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:53:06,661 INFO L85 PathProgramCache]: Analyzing trace with hash 782071008, now seen corresponding path program 2 times [2024-11-03 03:53:06,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:53:06,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68318690] [2024-11-03 03:53:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:53:06,661 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:53:06,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:53:06,664 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) [2024-11-03 03:53:06,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-03 03:53:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 03:53:11,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 03:53:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat