/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/array-examples/standard_copy3_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 05:51:56,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 05:51:56,356 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 05:51:56,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 05:51:56,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 05:51:56,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 05:51:56,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 05:51:56,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 05:51:56,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 05:51:56,375 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 05:51:56,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 05:51:56,376 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 05:51:56,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 05:51:56,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 05:51:56,376 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 05:51:56,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 05:51:56,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 05:51:56,377 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 05:51:56,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 05:51:56,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 05:51:56,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 05:51:56,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 05:51:56,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 05:51:56,388 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 05:51:56,388 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 05:51:56,388 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 05:51:56,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 05:51:56,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 05:51:56,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 05:51:56,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 05:51:56,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 05:51:56,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 05:51:56,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 05:51:56,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 05:51:56,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 05:51:56,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 05:51:56,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 05:51:56,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 05:51:56,390 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 05:51:56,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 05:51:56,390 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 05:51:56,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 05:51:56,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 05:51:56,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 05:51:56,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 05:51:56,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 05:51:56,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 05:51:56,597 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 05:51:56,597 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 05:51:56,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy3_ground-2.i [2023-12-20 05:51:57,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 05:51:57,879 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 05:51:57,880 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy3_ground-2.i [2023-12-20 05:51:57,885 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d73135386/9619e68df1bf44b88a42b57cd6be8197/FLAG0c22c15a2 [2023-12-20 05:51:57,895 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d73135386/9619e68df1bf44b88a42b57cd6be8197 [2023-12-20 05:51:57,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 05:51:57,898 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 05:51:57,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 05:51:57,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 05:51:57,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 05:51:57,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@826d361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57, skipping insertion in model container [2023-12-20 05:51:57,903 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,920 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 05:51:58,032 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-examples/standard_copy3_ground-2.i[816,829] [2023-12-20 05:51:58,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 05:51:58,051 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 05:51:58,059 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-examples/standard_copy3_ground-2.i[816,829] [2023-12-20 05:51:58,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 05:51:58,074 INFO L206 MainTranslator]: Completed translation [2023-12-20 05:51:58,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58 WrapperNode [2023-12-20 05:51:58,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 05:51:58,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 05:51:58,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 05:51:58,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 05:51:58,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,100 INFO L138 Inliner]: procedures = 16, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2023-12-20 05:51:58,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 05:51:58,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 05:51:58,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 05:51:58,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 05:51:58,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,118 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 3, 2, 3, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 2, 1]. [2023-12-20 05:51:58,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,127 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 05:51:58,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 05:51:58,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 05:51:58,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 05:51:58,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (1/1) ... [2023-12-20 05:51:58,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 05:51:58,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:58,155 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 05:51:58,157 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 05:51:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 05:51:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 05:51:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 05:51:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 05:51:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-20 05:51:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-20 05:51:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 05:51:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 05:51:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 05:51:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 05:51:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-20 05:51:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-20 05:51:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 05:51:58,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 05:51:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 05:51:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 05:51:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 05:51:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-20 05:51:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-20 05:51:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 05:51:58,238 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 05:51:58,239 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 05:51:58,369 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 05:51:58,396 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 05:51:58,396 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-20 05:51:58,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:51:58 BoogieIcfgContainer [2023-12-20 05:51:58,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 05:51:58,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 05:51:58,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 05:51:58,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 05:51:58,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:51:57" (1/3) ... [2023-12-20 05:51:58,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3596a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:51:58, skipping insertion in model container [2023-12-20 05:51:58,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:58" (2/3) ... [2023-12-20 05:51:58,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3596a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:51:58, skipping insertion in model container [2023-12-20 05:51:58,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:51:58" (3/3) ... [2023-12-20 05:51:58,403 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy3_ground-2.i [2023-12-20 05:51:58,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 05:51:58,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 05:51:58,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 05:51:58,450 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;@42b7e95f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 05:51:58,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 05:51:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-20 05:51:58,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:58,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:58,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:58,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:58,462 INFO L85 PathProgramCache]: Analyzing trace with hash 669440237, now seen corresponding path program 1 times [2023-12-20 05:51:58,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:58,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172438674] [2023-12-20 05:51:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:58,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 05:51:58,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:58,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172438674] [2023-12-20 05:51:58,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172438674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 05:51:58,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 05:51:58,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 05:51:58,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693366186] [2023-12-20 05:51:58,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 05:51:58,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 05:51:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:58,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 05:51:58,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 05:51:58,768 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:58,821 INFO L93 Difference]: Finished difference Result 31 states and 51 transitions. [2023-12-20 05:51:58,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 05:51:58,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-20 05:51:58,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:58,829 INFO L225 Difference]: With dead ends: 31 [2023-12-20 05:51:58,829 INFO L226 Difference]: Without dead ends: 15 [2023-12-20 05:51:58,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 05:51:58,836 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:58,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:58,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-20 05:51:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-20 05:51:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2023-12-20 05:51:58,859 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 12 [2023-12-20 05:51:58,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:58,859 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2023-12-20 05:51:58,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,859 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2023-12-20 05:51:58,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-20 05:51:58,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:58,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:58,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 05:51:58,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:58,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash 923954655, now seen corresponding path program 1 times [2023-12-20 05:51:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343418691] [2023-12-20 05:51:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 05:51:58,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:58,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343418691] [2023-12-20 05:51:58,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343418691] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:58,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597441276] [2023-12-20 05:51:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:58,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:58,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:58,936 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 05:51:58,953 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 05:51:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:59,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 05:51:59,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 05:51:59,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 05:51:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597441276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 05:51:59,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 05:51:59,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-20 05:51:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084938718] [2023-12-20 05:51:59,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 05:51:59,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 05:51:59,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 05:51:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 05:51:59,040 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:59,066 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2023-12-20 05:51:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 05:51:59,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-20 05:51:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:59,067 INFO L225 Difference]: With dead ends: 28 [2023-12-20 05:51:59,068 INFO L226 Difference]: Without dead ends: 18 [2023-12-20 05:51:59,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 05:51:59,069 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:59,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-20 05:51:59,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-20 05:51:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-20 05:51:59,079 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 13 [2023-12-20 05:51:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:59,080 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-20 05:51:59,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,080 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-20 05:51:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 05:51:59,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:59,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:59,104 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 05:51:59,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:59,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:59,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1457385742, now seen corresponding path program 1 times [2023-12-20 05:51:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:59,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482772763] [2023-12-20 05:51:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 05:51:59,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:59,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482772763] [2023-12-20 05:51:59,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482772763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:59,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174955852] [2023-12-20 05:51:59,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:59,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:59,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:59,396 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 05:51:59,423 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 05:51:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:59,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 05:51:59,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 05:51:59,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:51:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 05:51:59,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174955852] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:51:59,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:51:59,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-20 05:51:59,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344173748] [2023-12-20 05:51:59,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:51:59,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 05:51:59,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:59,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 05:51:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 05:51:59,492 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:59,516 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2023-12-20 05:51:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 05:51:59,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-20 05:51:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:59,518 INFO L225 Difference]: With dead ends: 36 [2023-12-20 05:51:59,518 INFO L226 Difference]: Without dead ends: 21 [2023-12-20 05:51:59,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 05:51:59,521 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:59,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:59,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-20 05:51:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-20 05:51:59,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-20 05:51:59,526 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 16 [2023-12-20 05:51:59,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:59,526 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-20 05:51:59,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,526 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-20 05:51:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 05:51:59,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:59,526 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:59,534 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 05:51:59,732 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,SelfDestructingSolverStorable2 [2023-12-20 05:51:59,735 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:59,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:59,735 INFO L85 PathProgramCache]: Analyzing trace with hash -936900928, now seen corresponding path program 2 times [2023-12-20 05:51:59,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:59,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302401860] [2023-12-20 05:51:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:59,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 05:51:59,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302401860] [2023-12-20 05:51:59,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302401860] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062686101] [2023-12-20 05:51:59,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 05:51:59,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:59,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:59,853 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 05:51:59,855 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 05:51:59,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 05:51:59,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:51:59,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 05:51:59,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 05:51:59,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:52:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 05:52:00,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062686101] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:52:00,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:52:00,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-12-20 05:52:00,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262733191] [2023-12-20 05:52:00,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:52:00,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 05:52:00,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:52:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 05:52:00,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-20 05:52:00,041 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:52:00,112 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2023-12-20 05:52:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 05:52:00,112 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-20 05:52:00,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:52:00,113 INFO L225 Difference]: With dead ends: 45 [2023-12-20 05:52:00,113 INFO L226 Difference]: Without dead ends: 30 [2023-12-20 05:52:00,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-20 05:52:00,116 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:52:00,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:52:00,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-20 05:52:00,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-20 05:52:00,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-12-20 05:52:00,126 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2023-12-20 05:52:00,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:52:00,126 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-12-20 05:52:00,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-12-20 05:52:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-20 05:52:00,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:52:00,128 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:52:00,138 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 05:52:00,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:00,333 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:52:00,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:52:00,333 INFO L85 PathProgramCache]: Analyzing trace with hash -934958259, now seen corresponding path program 3 times [2023-12-20 05:52:00,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:52:00,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016344409] [2023-12-20 05:52:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:52:00,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:52:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:52:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 05:52:00,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:52:00,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016344409] [2023-12-20 05:52:00,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016344409] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:52:00,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246657108] [2023-12-20 05:52:00,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 05:52:00,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:00,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:52:00,551 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 05:52:00,605 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 05:52:00,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-20 05:52:00,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:52:00,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 05:52:00,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:52:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 05:52:00,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:52:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 05:52:00,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246657108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:52:00,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:52:00,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2023-12-20 05:52:00,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757625334] [2023-12-20 05:52:00,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:52:00,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 05:52:00,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:52:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 05:52:00,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-12-20 05:52:00,739 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:52:00,818 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions. [2023-12-20 05:52:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 05:52:00,818 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-20 05:52:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:52:00,819 INFO L225 Difference]: With dead ends: 61 [2023-12-20 05:52:00,819 INFO L226 Difference]: Without dead ends: 43 [2023-12-20 05:52:00,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-12-20 05:52:00,820 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:52:00,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:52:00,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-20 05:52:00,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-20 05:52:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:00,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2023-12-20 05:52:00,824 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 28 [2023-12-20 05:52:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:52:00,824 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2023-12-20 05:52:00,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:00,825 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2023-12-20 05:52:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 05:52:00,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:52:00,825 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:52:00,836 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 05:52:01,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:01,031 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:52:01,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:52:01,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1347039103, now seen corresponding path program 4 times [2023-12-20 05:52:01,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:52:01,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033116559] [2023-12-20 05:52:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:52:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:52:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:52:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 05:52:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:52:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033116559] [2023-12-20 05:52:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033116559] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:52:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012688782] [2023-12-20 05:52:01,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 05:52:01,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:01,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:52:01,338 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:52:01,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 05:52:01,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 05:52:01,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:52:01,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 05:52:01,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:52:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 05:52:01,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:52:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 05:52:01,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012688782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:52:01,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:52:01,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-12-20 05:52:01,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430982680] [2023-12-20 05:52:01,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:52:01,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 05:52:01,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:52:01,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 05:52:01,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-12-20 05:52:01,680 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:52:01,708 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2023-12-20 05:52:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 05:52:01,709 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-20 05:52:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:52:01,709 INFO L225 Difference]: With dead ends: 86 [2023-12-20 05:52:01,709 INFO L226 Difference]: Without dead ends: 56 [2023-12-20 05:52:01,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-12-20 05:52:01,710 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:52:01,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:52:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-20 05:52:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-20 05:52:01,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2023-12-20 05:52:01,715 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 41 [2023-12-20 05:52:01,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:52:01,716 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2023-12-20 05:52:01,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2023-12-20 05:52:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 05:52:01,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:52:01,717 INFO L195 NwaCegarLoop]: trace histogram [24, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:52:01,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 05:52:01,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:01,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:52:01,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:52:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash 466877773, now seen corresponding path program 5 times [2023-12-20 05:52:01,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:52:01,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644632989] [2023-12-20 05:52:01,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:52:01,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:52:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:52:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 05:52:02,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:52:02,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644632989] [2023-12-20 05:52:02,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644632989] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:52:02,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354655296] [2023-12-20 05:52:02,594 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 05:52:02,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:02,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:52:02,611 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:52:02,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 06:06:47,770 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 [2023-12-20 06:06:47,774 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 06:06:48,794 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 0 [2023-12-20 06:06:48,976 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-12-20 06:06:49,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 06:06:49,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 06:06:49,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2023-12-20 06:06:49,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438401029] [2023-12-20 06:06:49,024 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 06:06:49,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 06:06:49,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:06:49,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 06:06:49,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-12-20 06:06:49,028 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:06:49,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 06:06:49,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-12-20 06:06:49,030 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:06:49,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:06:49,031 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 06:06:49,041 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-12-20 06:06:49,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:06:49,043 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (56states) and FLOYD_HOARE automaton (currently 2 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-20 06:06:49,046 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-12-20 06:06:49,048 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 06:06:49,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 06:06:49 BoogieIcfgContainer [2023-12-20 06:06:49,049 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 06:06:49,050 INFO L158 Benchmark]: Toolchain (without parser) took 891152.23ms. Allocated memory was 210.8MB in the beginning and 262.1MB in the end (delta: 51.4MB). Free memory was 170.2MB in the beginning and 140.5MB in the end (delta: 29.7MB). Peak memory consumption was 82.5MB. Max. memory is 8.0GB. [2023-12-20 06:06:49,050 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 175.1MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 06:06:49,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.01ms. Allocated memory is still 210.8MB. Free memory was 170.2MB in the beginning and 159.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 06:06:49,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.35ms. Allocated memory is still 210.8MB. Free memory was 159.0MB in the beginning and 157.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 06:06:49,050 INFO L158 Benchmark]: Boogie Preprocessor took 28.90ms. Allocated memory is still 210.8MB. Free memory was 157.2MB in the beginning and 155.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 06:06:49,050 INFO L158 Benchmark]: RCFGBuilder took 266.78ms. Allocated memory is still 210.8MB. Free memory was 155.1MB in the beginning and 140.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-20 06:06:49,051 INFO L158 Benchmark]: TraceAbstraction took 890651.15ms. Allocated memory was 210.8MB in the beginning and 262.1MB in the end (delta: 51.4MB). Free memory was 139.8MB in the beginning and 140.5MB in the end (delta: -713.8kB). Peak memory consumption was 52.1MB. Max. memory is 8.0GB. [2023-12-20 06:06:49,052 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-20 06:06:49,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 175.1MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 177.01ms. Allocated memory is still 210.8MB. Free memory was 170.2MB in the beginning and 159.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.35ms. Allocated memory is still 210.8MB. Free memory was 159.0MB in the beginning and 157.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.90ms. Allocated memory is still 210.8MB. Free memory was 157.2MB in the beginning and 155.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 266.78ms. Allocated memory is still 210.8MB. Free memory was 155.1MB in the beginning and 140.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 890651.15ms. Allocated memory was 210.8MB in the beginning and 262.1MB in the end (delta: 51.4MB). Free memory was 139.8MB in the beginning and 140.5MB in the end (delta: -713.8kB). Peak memory consumption was 52.1MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (56states) and FLOYD_HOARE automaton (currently 2 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 890.6s, OverallIterations: 7, TraceHistogramMax: 24, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 236 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 163 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 207 IncrementalHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 73 mSDtfsCounter, 207 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 275 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=6, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 300 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 388 ConstructedInterpolants, 0 QuantifiedInterpolants, 588 SizeOfPredicates, 0 NumberOfNonLiveVariables, 920 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 411/995 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