/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-87.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 22:50:55,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 22:50:55,938 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 22:50:55,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 22:50:55,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 22:50:55,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 22:50:55,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 22:50:55,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 22:50:55,986 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 22:50:55,989 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 22:50:55,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 22:50:55,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 22:50:55,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 22:50:55,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 22:50:55,992 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 22:50:55,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 22:50:55,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 22:50:55,993 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 22:50:55,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 22:50:55,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 22:50:55,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 22:50:55,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 22:50:55,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 22:50:55,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 22:50:55,995 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 22:50:55,995 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 22:50:55,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 22:50:55,996 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 22:50:55,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 22:50:55,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 22:50:55,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 22:50:55,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 22:50:55,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:50:55,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 22:50:55,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 22:50:55,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 22:50:55,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 22:50:55,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 22:50:55,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 22:50:55,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 22:50:55,999 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 22:50:56,000 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 22:50:56,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 22:50:56,000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 22:50:56,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 22:50:56,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 22:50:56,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 22:50:56,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 22:50:56,250 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 22:50:56,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-87.i [2023-12-20 22:50:57,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 22:50:57,663 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 22:50:57,664 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-87.i [2023-12-20 22:50:57,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16e7c0ed7/4d16a72c5e0848269208ed84d3912638/FLAG6ec09df9d [2023-12-20 22:50:57,690 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16e7c0ed7/4d16a72c5e0848269208ed84d3912638 [2023-12-20 22:50:57,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 22:50:57,694 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 22:50:57,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 22:50:57,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 22:50:57,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 22:50:57,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:50:57" (1/1) ... [2023-12-20 22:50:57,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9f9e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:57, skipping insertion in model container [2023-12-20 22:50:57,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:50:57" (1/1) ... [2023-12-20 22:50:57,743 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 22:50:57,883 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-87.i[916,929] [2023-12-20 22:50:57,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:50:58,008 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 22:50:58,021 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-87.i[916,929] [2023-12-20 22:50:58,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:50:58,064 INFO L206 MainTranslator]: Completed translation [2023-12-20 22:50:58,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58 WrapperNode [2023-12-20 22:50:58,064 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 22:50:58,068 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 22:50:58,069 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 22:50:58,069 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 22:50:58,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,131 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 216 [2023-12-20 22:50:58,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 22:50:58,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 22:50:58,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 22:50:58,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 22:50:58,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,164 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 22:50:58,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,177 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 22:50:58,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 22:50:58,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 22:50:58,201 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 22:50:58,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (1/1) ... [2023-12-20 22:50:58,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:50:58,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:50:58,232 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) [2023-12-20 22:50:58,258 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 [2023-12-20 22:50:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 22:50:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 22:50:58,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 22:50:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 22:50:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 22:50:58,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 22:50:58,370 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 22:50:58,374 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 22:50:58,823 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 22:50:58,878 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 22:50:58,878 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 22:50:58,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:50:58 BoogieIcfgContainer [2023-12-20 22:50:58,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 22:50:58,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 22:50:58,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 22:50:58,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 22:50:58,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 10:50:57" (1/3) ... [2023-12-20 22:50:58,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60feda90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:50:58, skipping insertion in model container [2023-12-20 22:50:58,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:50:58" (2/3) ... [2023-12-20 22:50:58,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60feda90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:50:58, skipping insertion in model container [2023-12-20 22:50:58,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:50:58" (3/3) ... [2023-12-20 22:50:58,888 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-87.i [2023-12-20 22:50:58,905 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 22:50:58,905 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 22:50:58,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 22:50:58,955 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;@739e281, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 22:50:58,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 22:50:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 50 states have internal predecessors, (69), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 22:50:58,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-20 22:50:58,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:50:58,976 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:50:58,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:50:58,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:50:58,981 INFO L85 PathProgramCache]: Analyzing trace with hash -59369122, now seen corresponding path program 1 times [2023-12-20 22:50:58,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:50:58,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364716563] [2023-12-20 22:50:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:50:58,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:50:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:50:59,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:50:59,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364716563] [2023-12-20 22:50:59,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 22:50:59,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990055610] [2023-12-20 22:50:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:50:59,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:50:59,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:50:59,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:50:59,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 22:50:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:50:59,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 22:50:59,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:50:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-12-20 22:50:59,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:50:59,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990055610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:50:59,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:50:59,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 22:50:59,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474549169] [2023-12-20 22:50:59,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:50:59,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 22:50:59,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:50:59,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 22:50:59,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:50:59,571 INFO L87 Difference]: Start difference. First operand has 86 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 50 states have internal predecessors, (69), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-20 22:50:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:50:59,634 INFO L93 Difference]: Finished difference Result 169 states and 306 transitions. [2023-12-20 22:50:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 22:50:59,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 209 [2023-12-20 22:50:59,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:50:59,646 INFO L225 Difference]: With dead ends: 169 [2023-12-20 22:50:59,646 INFO L226 Difference]: Without dead ends: 84 [2023-12-20 22:50:59,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:50:59,657 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:50:59,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:50:59,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-20 22:50:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-20 22:50:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 48 states have internal predecessors, (64), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 22:50:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 132 transitions. [2023-12-20 22:50:59,715 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 132 transitions. Word has length 209 [2023-12-20 22:50:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:50:59,716 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 132 transitions. [2023-12-20 22:50:59,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-20 22:50:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 132 transitions. [2023-12-20 22:50:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-20 22:50:59,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:50:59,724 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:50:59,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 22:50:59,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 22:50:59,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:50:59,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:50:59,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1802832602, now seen corresponding path program 1 times [2023-12-20 22:50:59,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:50:59,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606972423] [2023-12-20 22:50:59,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:50:59,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:51:00,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:51:00,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987960813] [2023-12-20 22:51:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:51:00,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:51:00,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:51:00,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:51:00,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 22:51:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:51:00,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 22:51:00,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:51:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1143 proven. 54 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2023-12-20 22:51:00,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:51:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 45 proven. 54 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-20 22:51:00,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:51:00,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606972423] [2023-12-20 22:51:00,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:51:00,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987960813] [2023-12-20 22:51:00,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987960813] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 22:51:00,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 22:51:00,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 22:51:00,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856209593] [2023-12-20 22:51:00,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 22:51:00,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 22:51:00,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:51:00,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 22:51:00,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 22:51:00,613 INFO L87 Difference]: Start difference. First operand 84 states and 132 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-20 22:51:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:51:00,918 INFO L93 Difference]: Finished difference Result 175 states and 270 transitions. [2023-12-20 22:51:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 22:51:00,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 209 [2023-12-20 22:51:00,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:51:00,922 INFO L225 Difference]: With dead ends: 175 [2023-12-20 22:51:00,922 INFO L226 Difference]: Without dead ends: 92 [2023-12-20 22:51:00,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 22:51:00,924 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 148 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:51:00,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 201 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 22:51:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-20 22:51:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2023-12-20 22:51:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 51 states have internal predecessors, (66), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 22:51:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2023-12-20 22:51:00,938 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 209 [2023-12-20 22:51:00,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:51:00,939 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2023-12-20 22:51:00,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-20 22:51:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2023-12-20 22:51:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-20 22:51:00,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:51:00,942 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:51:00,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 22:51:01,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 22:51:01,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:51:01,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:51:01,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1212271016, now seen corresponding path program 1 times [2023-12-20 22:51:01,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:51:01,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373873474] [2023-12-20 22:51:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:51:01,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:51:01,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:51:01,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832772027] [2023-12-20 22:51:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:51:01,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:51:01,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:51:01,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:51:01,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 22:51:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:51:01,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 22:51:01,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:51:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1229 proven. 60 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2023-12-20 22:51:01,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:51:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 132 proven. 63 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2023-12-20 22:51:02,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:51:02,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373873474] [2023-12-20 22:51:02,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:51:02,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832772027] [2023-12-20 22:51:02,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832772027] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 22:51:02,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 22:51:02,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2023-12-20 22:51:02,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266134174] [2023-12-20 22:51:02,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 22:51:02,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 22:51:02,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:51:02,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 22:51:02,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-12-20 22:51:02,333 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand has 20 states, 20 states have (on average 4.3) internal successors, (86), 20 states have internal predecessors, (86), 6 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) [2023-12-20 22:51:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:51:02,907 INFO L93 Difference]: Finished difference Result 191 states and 278 transitions. [2023-12-20 22:51:02,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 22:51:02,914 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 20 states have internal predecessors, (86), 6 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) Word has length 209 [2023-12-20 22:51:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:51:02,919 INFO L225 Difference]: With dead ends: 191 [2023-12-20 22:51:02,919 INFO L226 Difference]: Without dead ends: 104 [2023-12-20 22:51:02,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=858, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 22:51:02,921 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 329 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 22:51:02,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 205 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 22:51:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-20 22:51:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-12-20 22:51:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 58 states have internal predecessors, (68), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 22:51:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2023-12-20 22:51:02,946 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 209 [2023-12-20 22:51:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:51:02,948 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2023-12-20 22:51:02,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 20 states have internal predecessors, (86), 6 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) [2023-12-20 22:51:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2023-12-20 22:51:02,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-20 22:51:02,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:51:02,951 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:51:02,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 22:51:03,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:51:03,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:51:03,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:51:03,158 INFO L85 PathProgramCache]: Analyzing trace with hash -376076886, now seen corresponding path program 1 times [2023-12-20 22:51:03,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:51:03,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7949589] [2023-12-20 22:51:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:51:03,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:51:03,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:51:03,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031244764] [2023-12-20 22:51:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:51:03,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:51:03,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:51:03,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:51:03,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 22:51:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:51:03,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-20 22:51:03,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:51:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1656 proven. 336 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-20 22:51:14,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:51:33,590 WARN L293 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 95 DAG size of output: 75 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:52:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-20 22:52:22,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:52:22,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7949589] [2023-12-20 22:52:22,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:52:22,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031244764] [2023-12-20 22:52:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031244764] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 22:52:22,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 22:52:22,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [32] total 38 [2023-12-20 22:52:22,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762723428] [2023-12-20 22:52:22,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:52:22,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 22:52:22,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:52:22,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 22:52:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1158, Unknown=1, NotChecked=0, Total=1406 [2023-12-20 22:52:22,731 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-20 22:52:51,624 WARN L293 SmtUtils]: Spent 24.42s on a formula simplification. DAG size of input: 194 DAG size of output: 192 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:52:55,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:00,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:04,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:09,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:13,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:17,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:21,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:24,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:28,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:32,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:36,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:40,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:44,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:48,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:52,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:53:56,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:54:00,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:54:11,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:54:15,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:54:38,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:54:42,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:54:59,589 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 186 DAG size of output: 183 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:55:19,896 WARN L293 SmtUtils]: Spent 11.15s on a formula simplification. DAG size of input: 217 DAG size of output: 212 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:55:24,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:55:28,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:55:32,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:55:36,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:55:40,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:55:45,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:55:49,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:55:53,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 22:55:53,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 124.9s TimeCoverageRelationStatistics Valid=271, Invalid=1441, Unknown=10, NotChecked=0, Total=1722 [2023-12-20 22:55:53,452 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 62 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.7s IncrementalHoareTripleChecker+Time [2023-12-20 22:55:53,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 573 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 27 Unknown, 0 Unchecked, 125.7s Time] [2023-12-20 22:55:53,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 139 [2023-12-20 22:55:53,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 22:55:53,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:55:53,654 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:349) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-12-20 22:55:53,657 INFO L158 Benchmark]: Toolchain (without parser) took 295963.73ms. Allocated memory was 262.1MB in the beginning and 544.2MB in the end (delta: 282.1MB). Free memory was 208.6MB in the beginning and 478.7MB in the end (delta: -270.1MB). Peak memory consumption was 315.5MB. Max. memory is 8.0GB. [2023-12-20 22:55:53,657 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 198.2MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 22:55:53,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.81ms. Allocated memory is still 262.1MB. Free memory was 208.6MB in the beginning and 191.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-20 22:55:53,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.75ms. Allocated memory is still 262.1MB. Free memory was 191.8MB in the beginning and 186.1MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-20 22:55:53,658 INFO L158 Benchmark]: Boogie Preprocessor took 65.00ms. Allocated memory is still 262.1MB. Free memory was 186.1MB in the beginning and 176.1MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-20 22:55:53,659 INFO L158 Benchmark]: RCFGBuilder took 678.23ms. Allocated memory is still 262.1MB. Free memory was 176.1MB in the beginning and 140.5MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-20 22:55:53,659 INFO L158 Benchmark]: TraceAbstraction took 294776.23ms. Allocated memory was 262.1MB in the beginning and 544.2MB in the end (delta: 282.1MB). Free memory was 139.9MB in the beginning and 478.7MB in the end (delta: -338.8MB). Peak memory consumption was 246.3MB. Max. memory is 8.0GB. [2023-12-20 22:55:53,660 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 198.2MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 371.81ms. Allocated memory is still 262.1MB. Free memory was 208.6MB in the beginning and 191.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.75ms. Allocated memory is still 262.1MB. Free memory was 191.8MB in the beginning and 186.1MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 65.00ms. Allocated memory is still 262.1MB. Free memory was 186.1MB in the beginning and 176.1MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 678.23ms. Allocated memory is still 262.1MB. Free memory was 176.1MB in the beginning and 140.5MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 294776.23ms. Allocated memory was 262.1MB in the beginning and 544.2MB in the end (delta: 282.1MB). Free memory was 139.9MB in the beginning and 478.7MB in the end (delta: -338.8MB). Peak memory consumption was 246.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...