/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/array-patterns/array12_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 07:06:17,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 07:06:18,040 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 07:06:18,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 07:06:18,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 07:06:18,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 07:06:18,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 07:06:18,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 07:06:18,071 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 07:06:18,074 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 07:06:18,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 07:06:18,075 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 07:06:18,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 07:06:18,076 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 07:06:18,076 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 07:06:18,077 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 07:06:18,077 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 07:06:18,077 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 07:06:18,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 07:06:18,078 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 07:06:18,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 07:06:18,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 07:06:18,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 07:06:18,079 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 07:06:18,079 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 07:06:18,079 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 07:06:18,079 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 07:06:18,079 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 07:06:18,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 07:06:18,080 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 07:06:18,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 07:06:18,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 07:06:18,081 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 07:06:18,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 07:06:18,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:06:18,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 07:06:18,082 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 07:06:18,082 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 07:06:18,082 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 07:06:18,082 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 07:06:18,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 07:06:18,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 07:06:18,082 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 07:06:18,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 07:06:18,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 07:06:18,083 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 07:06:18,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 07:06:18,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 07:06:18,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 07:06:18,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 07:06:18,298 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 07:06:18,298 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 07:06:18,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array12_pattern.c [2023-12-16 07:06:19,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 07:06:19,555 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 07:06:19,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array12_pattern.c [2023-12-16 07:06:19,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c242a19/579009c875c048a68a0bf271e38527e4/FLAG083b08f7f [2023-12-16 07:06:19,575 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c242a19/579009c875c048a68a0bf271e38527e4 [2023-12-16 07:06:19,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 07:06:19,578 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 07:06:19,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 07:06:19,581 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 07:06:19,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 07:06:19,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@933a1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19, skipping insertion in model container [2023-12-16 07:06:19,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,601 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 07:06:19,714 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array12_pattern.c[1349,1362] [2023-12-16 07:06:19,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:06:19,740 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 07:06:19,752 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array12_pattern.c[1349,1362] [2023-12-16 07:06:19,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:06:19,770 INFO L206 MainTranslator]: Completed translation [2023-12-16 07:06:19,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19 WrapperNode [2023-12-16 07:06:19,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 07:06:19,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 07:06:19,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 07:06:19,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 07:06:19,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,802 INFO L138 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-12-16 07:06:19,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 07:06:19,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 07:06:19,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 07:06:19,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 07:06:19,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,824 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,832 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-16 07:06:19,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 07:06:19,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 07:06:19,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 07:06:19,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 07:06:19,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (1/1) ... [2023-12-16 07:06:19,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:06:19,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 07:06:19,883 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) [2023-12-16 07:06:19,904 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 [2023-12-16 07:06:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 07:06:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 07:06:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 07:06:19,911 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 07:06:19,911 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 07:06:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 07:06:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 07:06:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 07:06:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 07:06:19,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 07:06:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 07:06:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 07:06:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 07:06:19,970 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 07:06:19,971 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 07:06:20,231 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 07:06:20,271 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 07:06:20,274 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-16 07:06:20,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:06:20 BoogieIcfgContainer [2023-12-16 07:06:20,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 07:06:20,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 07:06:20,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 07:06:20,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 07:06:20,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:06:19" (1/3) ... [2023-12-16 07:06:20,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:06:20, skipping insertion in model container [2023-12-16 07:06:20,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:06:19" (2/3) ... [2023-12-16 07:06:20,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:06:20, skipping insertion in model container [2023-12-16 07:06:20,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:06:20" (3/3) ... [2023-12-16 07:06:20,281 INFO L112 eAbstractionObserver]: Analyzing ICFG array12_pattern.c [2023-12-16 07:06:20,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 07:06:20,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 07:06:20,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 07:06:20,340 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;@39c4e231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 07:06:20,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 07:06:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:06:20,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 07:06:20,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:06:20,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:06:20,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:06:20,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:06:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash -651067928, now seen corresponding path program 1 times [2023-12-16 07:06:20,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:06:20,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158983133] [2023-12-16 07:06:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:06:20,362 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 [2023-12-16 07:06:20,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:06:20,364 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) [2023-12-16 07:06:20,381 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 [2023-12-16 07:06:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:06:20,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 07:06:20,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:06:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:06:20,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:06:20,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:06:20,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158983133] [2023-12-16 07:06:20,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158983133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:06:20,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:06:20,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 07:06:20,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126203267] [2023-12-16 07:06:20,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:06:20,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 07:06:20,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:06:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 07:06:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:06:20,519 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 07:06:20,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:06:20,577 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2023-12-16 07:06:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 07:06:20,579 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-16 07:06:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:06:20,583 INFO L225 Difference]: With dead ends: 48 [2023-12-16 07:06:20,583 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 07:06:20,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:06:20,589 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:06:20,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:06:20,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 07:06:20,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-16 07:06:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:06:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-12-16 07:06:20,618 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 14 [2023-12-16 07:06:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:06:20,619 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-12-16 07:06:20,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 07:06:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-12-16 07:06:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 07:06:20,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:06:20,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:06:20,624 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 [2023-12-16 07:06:20,824 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 [2023-12-16 07:06:20,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:06:20,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:06:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash -924519167, now seen corresponding path program 1 times [2023-12-16 07:06:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:06:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669259861] [2023-12-16 07:06:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:06:20,826 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 [2023-12-16 07:06:20,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:06:20,829 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) [2023-12-16 07:06:20,838 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 [2023-12-16 07:06:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:06:20,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 07:06:20,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:06:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 07:06:21,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:06:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 07:06:21,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:06:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669259861] [2023-12-16 07:06:21,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669259861] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:06:21,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:06:21,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 07:06:21,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244684485] [2023-12-16 07:06:21,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:06:21,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 07:06:21,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:06:21,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 07:06:21,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 07:06:21,429 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:06:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:06:21,775 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2023-12-16 07:06:21,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 07:06:21,775 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2023-12-16 07:06:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:06:21,776 INFO L225 Difference]: With dead ends: 34 [2023-12-16 07:06:21,776 INFO L226 Difference]: Without dead ends: 30 [2023-12-16 07:06:21,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-16 07:06:21,777 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 07:06:21,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 67 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 07:06:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-16 07:06:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-16 07:06:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:06:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-12-16 07:06:21,783 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 26 [2023-12-16 07:06:21,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:06:21,784 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-12-16 07:06:21,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:06:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-12-16 07:06:21,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-16 07:06:21,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:06:21,785 INFO L195 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, 1, 1] [2023-12-16 07:06:21,791 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 (3)] Ended with exit code 0 [2023-12-16 07:06:21,991 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 [2023-12-16 07:06:21,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:06:21,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:06:21,992 INFO L85 PathProgramCache]: Analyzing trace with hash -414565512, now seen corresponding path program 1 times [2023-12-16 07:06:21,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:06:21,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990348810] [2023-12-16 07:06:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:06:21,993 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 [2023-12-16 07:06:21,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:06:21,995 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) [2023-12-16 07:06:21,999 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 [2023-12-16 07:06:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:06:22,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 07:06:22,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:06:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 07:06:22,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:06:22,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:06:22,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990348810] [2023-12-16 07:06:22,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990348810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:06:22,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:06:22,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 07:06:22,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021979902] [2023-12-16 07:06:22,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:06:22,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 07:06:22,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:06:22,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 07:06:22,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:06:22,175 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:06:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:06:22,536 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2023-12-16 07:06:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 07:06:22,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-12-16 07:06:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:06:22,537 INFO L225 Difference]: With dead ends: 58 [2023-12-16 07:06:22,537 INFO L226 Difference]: Without dead ends: 38 [2023-12-16 07:06:22,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 07:06:22,538 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 07:06:22,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 07:06:22,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-16 07:06:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2023-12-16 07:06:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:06:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-12-16 07:06:22,545 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 30 [2023-12-16 07:06:22,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:06:22,545 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-12-16 07:06:22,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:06:22,546 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-12-16 07:06:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 07:06:22,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:06:22,546 INFO L195 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, 1, 1, 1, 1, 1] [2023-12-16 07:06:22,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 07:06:22,750 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 [2023-12-16 07:06:22,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:06:22,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:06:22,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1779183788, now seen corresponding path program 1 times [2023-12-16 07:06:22,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:06:22,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770252722] [2023-12-16 07:06:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:06:22,752 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 [2023-12-16 07:06:22,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:06:22,769 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) [2023-12-16 07:06:22,778 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 [2023-12-16 07:06:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:06:22,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 07:06:22,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:06:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 07:06:22,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:06:22,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:06:22,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770252722] [2023-12-16 07:06:22,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770252722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:06:22,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:06:22,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 07:06:22,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713295169] [2023-12-16 07:06:22,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:06:22,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 07:06:22,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:06:22,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 07:06:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:06:22,951 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:06:23,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:06:23,277 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2023-12-16 07:06:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 07:06:23,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-12-16 07:06:23,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:06:23,278 INFO L225 Difference]: With dead ends: 55 [2023-12-16 07:06:23,278 INFO L226 Difference]: Without dead ends: 32 [2023-12-16 07:06:23,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 07:06:23,279 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 07:06:23,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 45 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 07:06:23,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-16 07:06:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-12-16 07:06:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:06:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-12-16 07:06:23,289 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 33 [2023-12-16 07:06:23,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:06:23,289 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-12-16 07:06:23,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:06:23,289 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-12-16 07:06:23,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 07:06:23,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:06:23,291 INFO L195 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, 1, 1, 1, 1, 1, 1] [2023-12-16 07:06:23,312 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 [2023-12-16 07:06:23,494 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 [2023-12-16 07:06:23,495 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:06:23,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:06:23,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1065316657, now seen corresponding path program 1 times [2023-12-16 07:06:23,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:06:23,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451280524] [2023-12-16 07:06:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:06:23,496 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 [2023-12-16 07:06:23,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:06:23,499 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) [2023-12-16 07:06:23,526 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 [2023-12-16 07:06:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:06:23,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 07:06:23,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:06:24,446 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-16 07:06:24,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-12-16 07:06:25,606 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:06:25,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:06:25,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2023-12-16 07:06:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 07:06:25,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:06:26,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2023-12-16 07:06:26,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 280 [2023-12-16 07:06:27,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2023-12-16 07:06:27,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 124 [2023-12-16 07:06:37,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:06:37,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451280524] [2023-12-16 07:06:37,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451280524] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 07:06:37,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1344676029] [2023-12-16 07:06:37,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:06:37,171 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 07:06:37,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 07:06:37,217 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) [2023-12-16 07:06:37,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-16 07:06:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:06:37,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 07:06:37,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:06:38,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 07:06:40,906 INFO L349 Elim1Store]: treesize reduction 73, result has 31.8 percent of original size [2023-12-16 07:06:40,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 58 [2023-12-16 07:06:41,168 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-16 07:06:45,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:06:45,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 117 [2023-12-16 07:07:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 07:07:00,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:07:05,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1344676029] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 07:07:05,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:07:05,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2023-12-16 07:07:05,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673901087] [2023-12-16 07:07:05,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:07:05,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 07:07:05,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:07:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 07:07:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1320, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 07:07:05,178 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 32 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-16 07:07:15,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 07:07:23,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 07:07:28,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 07:07:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:07:28,797 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2023-12-16 07:07:28,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-16 07:07:28,813 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 34 [2023-12-16 07:07:28,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:07:28,815 INFO L225 Difference]: With dead ends: 107 [2023-12-16 07:07:28,815 INFO L226 Difference]: Without dead ends: 82 [2023-12-16 07:07:28,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=579, Invalid=3203, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 07:07:28,817 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 137 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:07:28,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 179 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 503 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2023-12-16 07:07:28,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-16 07:07:28,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 50. [2023-12-16 07:07:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 07:07:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2023-12-16 07:07:28,828 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 34 [2023-12-16 07:07:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:07:28,828 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2023-12-16 07:07:28,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-16 07:07:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2023-12-16 07:07:28,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 07:07:28,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:07:28,829 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:07:28,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-16 07:07:29,037 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 (6)] Ended with exit code 0 [2023-12-16 07:07:29,235 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 [2023-12-16 07:07:29,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:07:29,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:07:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash 478134995, now seen corresponding path program 2 times [2023-12-16 07:07:29,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:07:29,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585444728] [2023-12-16 07:07:29,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:07:29,237 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 [2023-12-16 07:07:29,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:07:29,238 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) [2023-12-16 07:07:29,238 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 [2023-12-16 07:07:29,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 07:07:29,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:07:29,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 07:07:29,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:07:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 07:07:30,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:07:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 07:07:30,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:07:30,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585444728] [2023-12-16 07:07:30,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585444728] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:07:30,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:07:30,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2023-12-16 07:07:30,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478032566] [2023-12-16 07:07:30,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:07:30,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 07:07:30,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:07:30,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 07:07:30,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-16 07:07:30,461 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:07:32,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:07:32,624 INFO L93 Difference]: Finished difference Result 102 states and 128 transitions. [2023-12-16 07:07:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 07:07:32,626 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 35 [2023-12-16 07:07:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:07:32,626 INFO L225 Difference]: With dead ends: 102 [2023-12-16 07:07:32,626 INFO L226 Difference]: Without dead ends: 83 [2023-12-16 07:07:32,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2023-12-16 07:07:32,627 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 07:07:32,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 86 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 07:07:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-16 07:07:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 58. [2023-12-16 07:07:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 07:07:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2023-12-16 07:07:32,664 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 35 [2023-12-16 07:07:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:07:32,665 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2023-12-16 07:07:32,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:07:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2023-12-16 07:07:32,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 07:07:32,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:07:32,665 INFO L195 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, 1, 1] [2023-12-16 07:07:32,671 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 (8)] Ended with exit code 0 [2023-12-16 07:07:32,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 07:07:32,871 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:07:32,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:07:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1458249640, now seen corresponding path program 3 times [2023-12-16 07:07:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:07:32,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568151134] [2023-12-16 07:07:32,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 07:07:32,872 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 [2023-12-16 07:07:32,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:07:32,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:07:32,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 07:07:33,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 07:07:33,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:07:33,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 07:07:33,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:07:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 07:07:33,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 07:07:34,155 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 [2023-12-16 07:07:34,158 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 07:07:34,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 07:07:34,184 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:07:34,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:07:34,359 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 39 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. [2023-12-16 07:07:34,362 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-12-16 07:07:34,367 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 07:07:34,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:07:34 BoogieIcfgContainer [2023-12-16 07:07:34,370 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 07:07:34,372 INFO L158 Benchmark]: Toolchain (without parser) took 74793.57ms. Allocated memory is still 266.3MB. Free memory was 222.6MB in the beginning and 167.0MB in the end (delta: 55.6MB). Peak memory consumption was 56.5MB. Max. memory is 8.0GB. [2023-12-16 07:07:34,372 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 130.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:07:34,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.50ms. Allocated memory is still 266.3MB. Free memory was 222.5MB in the beginning and 210.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 07:07:34,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.17ms. Allocated memory is still 266.3MB. Free memory was 210.5MB in the beginning and 208.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 07:07:34,374 INFO L158 Benchmark]: Boogie Preprocessor took 42.28ms. Allocated memory is still 266.3MB. Free memory was 208.9MB in the beginning and 206.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 07:07:34,375 INFO L158 Benchmark]: RCFGBuilder took 420.73ms. Allocated memory is still 266.3MB. Free memory was 206.3MB in the beginning and 191.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 07:07:34,376 INFO L158 Benchmark]: TraceAbstraction took 74094.04ms. Allocated memory is still 266.3MB. Free memory was 190.6MB in the beginning and 167.0MB in the end (delta: 23.6MB). Peak memory consumption was 24.0MB. Max. memory is 8.0GB. [2023-12-16 07:07:34,379 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 130.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.50ms. Allocated memory is still 266.3MB. Free memory was 222.5MB in the beginning and 210.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.17ms. Allocated memory is still 266.3MB. Free memory was 210.5MB in the beginning and 208.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.28ms. Allocated memory is still 266.3MB. Free memory was 208.9MB in the beginning and 206.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 420.73ms. Allocated memory is still 266.3MB. Free memory was 206.3MB in the beginning and 191.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 74094.04ms. Allocated memory is still 266.3MB. Free memory was 190.6MB in the beginning and 167.0MB in the end (delta: 23.6MB). Peak memory consumption was 24.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 34). Cancelled while NwaCegarLoop was analyzing trace of length 39 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.0s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 27.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 305 SdHoareTripleChecker+Valid, 17.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 299 mSDsluCounter, 440 SdHoareTripleChecker+Invalid, 17.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 338 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1096 IncrementalHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 102 mSDtfsCounter, 1096 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 211 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 34.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=6, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 43.0s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 258 ConstructedInterpolants, 108 QuantifiedInterpolants, 3584 SizeOfPredicates, 42 NumberOfNonLiveVariables, 469 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 87/121 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