/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-84.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:26:51,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:26:51,209 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:26:51,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:26:51,213 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:26:51,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:26:51,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:26:51,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:26:51,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:26:51,229 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:26:51,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:26:51,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:26:51,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:26:51,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:26:51,230 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:26:51,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:26:51,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:26:51,231 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:26:51,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:26:51,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:26:51,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:26:51,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:26:51,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:26:51,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:26:51,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:26:51,233 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:26:51,234 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:26:51,234 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:26:51,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:26:51,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:26:51,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:26:51,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:26:51,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:26:51,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:26:51,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:26:51,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:26:51,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:26:51,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:26:51,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:26:51,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:26:51,237 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:26:51,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:26:51,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:26:51,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:26:51,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:26:51,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:26:51,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:26:51,469 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:26:51,469 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:26:51,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-84.i [2023-12-15 20:26:52,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:26:52,524 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:26:52,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-84.i [2023-12-15 20:26:52,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556e1814c/55946f67ed074652aa38af3a91873b4d/FLAG081d524d3 [2023-12-15 20:26:52,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556e1814c/55946f67ed074652aa38af3a91873b4d [2023-12-15 20:26:52,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:26:52,560 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:26:52,562 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:26:52,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:26:52,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:26:52,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b49155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52, skipping insertion in model container [2023-12-15 20:26:52,567 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,600 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:26:52,686 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_fillercode_fillercodestructure_filler-pr-co_file-84.i[919,932] [2023-12-15 20:26:52,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:26:52,756 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:26:52,764 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_fillercode_fillercodestructure_filler-pr-co_file-84.i[919,932] [2023-12-15 20:26:52,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:26:52,806 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:26:52,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52 WrapperNode [2023-12-15 20:26:52,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:26:52,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:26:52,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:26:52,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:26:52,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,867 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 282 [2023-12-15 20:26:52,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:26:52,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:26:52,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:26:52,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:26:52,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,899 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]. [2023-12-15 20:26:52,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,899 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,916 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:26:52,936 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:26:52,936 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:26:52,936 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:26:52,937 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (1/1) ... [2023-12-15 20:26:52,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:26:52,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:26:52,959 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) [2023-12-15 20:26:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:26:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:26:52,983 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:26:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:26:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:26:52,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:26:52,977 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 [2023-12-15 20:26:53,061 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:26:53,063 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:26:53,383 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:26:53,403 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:26:53,403 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:26:53,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:26:53 BoogieIcfgContainer [2023-12-15 20:26:53,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:26:53,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:26:53,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:26:53,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:26:53,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:26:52" (1/3) ... [2023-12-15 20:26:53,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70627891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:26:53, skipping insertion in model container [2023-12-15 20:26:53,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:26:52" (2/3) ... [2023-12-15 20:26:53,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70627891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:26:53, skipping insertion in model container [2023-12-15 20:26:53,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:26:53" (3/3) ... [2023-12-15 20:26:53,409 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-84.i [2023-12-15 20:26:53,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:26:53,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:26:53,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:26:53,482 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;@2cf48de2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:26:53,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:26:53,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 72 states have internal predecessors, (106), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 20:26:53,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-15 20:26:53,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:26:53,504 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:26:53,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:26:53,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:26:53,508 INFO L85 PathProgramCache]: Analyzing trace with hash -226000992, now seen corresponding path program 1 times [2023-12-15 20:26:53,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:26:53,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610827487] [2023-12-15 20:26:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:26:53,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:26:53,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:26:53,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725916407] [2023-12-15 20:26:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:26:53,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:26:53,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:26:53,710 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) [2023-12-15 20:26:53,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:26:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:26:53,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:26:53,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:26:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:26:53,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:26:53,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:26:53,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610827487] [2023-12-15 20:26:53,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:26:53,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725916407] [2023-12-15 20:26:53,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725916407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:26:53,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:26:53,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:26:53,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804124129] [2023-12-15 20:26:53,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:26:54,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:26:54,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:26:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:26:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:26:54,027 INFO L87 Difference]: Start difference. First operand has 114 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 72 states have internal predecessors, (106), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:26:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:26:54,080 INFO L93 Difference]: Finished difference Result 222 states and 404 transitions. [2023-12-15 20:26:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:26:54,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 251 [2023-12-15 20:26:54,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:26:54,089 INFO L225 Difference]: With dead ends: 222 [2023-12-15 20:26:54,089 INFO L226 Difference]: Without dead ends: 109 [2023-12-15 20:26:54,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:26:54,094 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:26:54,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 163 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:26:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-15 20:26:54,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-15 20:26:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 67 states have internal predecessors, (91), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 20:26:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 171 transitions. [2023-12-15 20:26:54,129 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 171 transitions. Word has length 251 [2023-12-15 20:26:54,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:26:54,130 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 171 transitions. [2023-12-15 20:26:54,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:26:54,131 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 171 transitions. [2023-12-15 20:26:54,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-15 20:26:54,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:26:54,134 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:26:54,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 20:26:54,342 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 [2023-12-15 20:26:54,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:26:54,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:26:54,343 INFO L85 PathProgramCache]: Analyzing trace with hash -928836587, now seen corresponding path program 1 times [2023-12-15 20:26:54,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:26:54,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309105114] [2023-12-15 20:26:54,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:26:54,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:26:54,420 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:26:54,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694818591] [2023-12-15 20:26:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:26:54,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:26:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:26:54,428 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) [2023-12-15 20:26:54,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:26:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:26:54,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:26:54,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:09,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:27:09,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:09,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309105114] [2023-12-15 20:27:09,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:09,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694818591] [2023-12-15 20:27:09,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694818591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:27:09,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:27:09,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:27:09,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339643779] [2023-12-15 20:27:09,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:09,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:27:09,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:09,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:27:09,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:27:09,035 INFO L87 Difference]: Start difference. First operand 109 states and 171 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:13,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:13,459 INFO L93 Difference]: Finished difference Result 256 states and 394 transitions. [2023-12-15 20:27:13,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 20:27:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 252 [2023-12-15 20:27:13,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:13,462 INFO L225 Difference]: With dead ends: 256 [2023-12-15 20:27:13,462 INFO L226 Difference]: Without dead ends: 148 [2023-12-15 20:27:13,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:27:13,464 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 123 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:13,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 610 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 20:27:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-15 20:27:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2023-12-15 20:27:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 98 states have (on average 1.3571428571428572) internal successors, (133), 99 states have internal predecessors, (133), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-15 20:27:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 221 transitions. [2023-12-15 20:27:13,480 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 221 transitions. Word has length 252 [2023-12-15 20:27:13,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:13,481 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 221 transitions. [2023-12-15 20:27:13,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:13,481 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 221 transitions. [2023-12-15 20:27:13,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-15 20:27:13,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:13,484 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:13,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 20:27:13,685 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 [2023-12-15 20:27:13,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:13,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:13,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2072441341, now seen corresponding path program 1 times [2023-12-15 20:27:13,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:13,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834977569] [2023-12-15 20:27:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:13,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:13,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:13,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668429389] [2023-12-15 20:27:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:13,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:13,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:13,749 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) [2023-12-15 20:27:13,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:27:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:13,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:27:13,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:14,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:27:14,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834977569] [2023-12-15 20:27:14,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:14,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668429389] [2023-12-15 20:27:14,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668429389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:27:14,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:27:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:27:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378336617] [2023-12-15 20:27:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:14,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:27:14,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:14,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:27:14,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:27:14,162 INFO L87 Difference]: Start difference. First operand 145 states and 221 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:14,288 INFO L93 Difference]: Finished difference Result 333 states and 498 transitions. [2023-12-15 20:27:14,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 20:27:14,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 253 [2023-12-15 20:27:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:14,291 INFO L225 Difference]: With dead ends: 333 [2023-12-15 20:27:14,291 INFO L226 Difference]: Without dead ends: 189 [2023-12-15 20:27:14,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:27:14,293 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 93 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:14,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 646 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:27:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-15 20:27:14,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2023-12-15 20:27:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 132 states have (on average 1.3484848484848484) internal successors, (178), 135 states have internal predecessors, (178), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-15 20:27:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 274 transitions. [2023-12-15 20:27:14,310 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 274 transitions. Word has length 253 [2023-12-15 20:27:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:14,310 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 274 transitions. [2023-12-15 20:27:14,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 274 transitions. [2023-12-15 20:27:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-15 20:27:14,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:14,313 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:14,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:27:14,523 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 [2023-12-15 20:27:14,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:14,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:14,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1799824129, now seen corresponding path program 1 times [2023-12-15 20:27:14,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:14,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239852611] [2023-12-15 20:27:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:14,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:14,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:14,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18885726] [2023-12-15 20:27:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:14,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:14,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:14,571 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) [2023-12-15 20:27:14,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:27:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:14,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:27:14,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 339 proven. 111 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2023-12-15 20:27:14,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:27:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2023-12-15 20:27:15,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:15,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239852611] [2023-12-15 20:27:15,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18885726] [2023-12-15 20:27:15,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18885726] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:27:15,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:27:15,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 20:27:15,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857315847] [2023-12-15 20:27:15,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:27:15,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:27:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:27:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:27:15,088 INFO L87 Difference]: Start difference. First operand 185 states and 274 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-15 20:27:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:15,407 INFO L93 Difference]: Finished difference Result 343 states and 504 transitions. [2023-12-15 20:27:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:27:15,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) Word has length 253 [2023-12-15 20:27:15,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:15,417 INFO L225 Difference]: With dead ends: 343 [2023-12-15 20:27:15,417 INFO L226 Difference]: Without dead ends: 166 [2023-12-15 20:27:15,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:27:15,424 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 117 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:15,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 292 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:27:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-15 20:27:15,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2023-12-15 20:27:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 113 states have internal predecessors, (144), 46 states have call successors, (46), 6 states have call predecessors, (46), 6 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-15 20:27:15,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 236 transitions. [2023-12-15 20:27:15,451 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 236 transitions. Word has length 253 [2023-12-15 20:27:15,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:15,452 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 236 transitions. [2023-12-15 20:27:15,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-15 20:27:15,452 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 236 transitions. [2023-12-15 20:27:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-15 20:27:15,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:15,454 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:15,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:27:15,661 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 [2023-12-15 20:27:15,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:15,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:15,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1556364102, now seen corresponding path program 1 times [2023-12-15 20:27:15,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:15,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346732768] [2023-12-15 20:27:15,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:15,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:15,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:15,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524639848] [2023-12-15 20:27:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:15,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:15,682 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) [2023-12-15 20:27:15,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:27:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:15,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:27:15,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:16,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:27:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346732768] [2023-12-15 20:27:16,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524639848] [2023-12-15 20:27:16,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524639848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:27:16,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:27:16,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 20:27:16,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391459381] [2023-12-15 20:27:16,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:16,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:27:16,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:16,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:27:16,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:27:16,618 INFO L87 Difference]: Start difference. First operand 164 states and 236 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:17,035 INFO L93 Difference]: Finished difference Result 470 states and 672 transitions. [2023-12-15 20:27:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 20:27:17,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 254 [2023-12-15 20:27:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:17,037 INFO L225 Difference]: With dead ends: 470 [2023-12-15 20:27:17,037 INFO L226 Difference]: Without dead ends: 314 [2023-12-15 20:27:17,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-15 20:27:17,038 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 132 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:17,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 818 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:27:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-15 20:27:17,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 214. [2023-12-15 20:27:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 161 states have (on average 1.329192546583851) internal successors, (214), 163 states have internal predecessors, (214), 46 states have call successors, (46), 6 states have call predecessors, (46), 6 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-15 20:27:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 306 transitions. [2023-12-15 20:27:17,052 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 306 transitions. Word has length 254 [2023-12-15 20:27:17,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:17,053 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 306 transitions. [2023-12-15 20:27:17,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:17,053 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 306 transitions. [2023-12-15 20:27:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-15 20:27:17,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:17,055 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:17,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:27:17,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:17,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:17,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash -855299524, now seen corresponding path program 1 times [2023-12-15 20:27:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353840788] [2023-12-15 20:27:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:17,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116742950] [2023-12-15 20:27:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:17,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:17,280 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) [2023-12-15 20:27:17,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:27:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:17,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 20:27:17,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:18,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:27:18,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:18,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353840788] [2023-12-15 20:27:18,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:18,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116742950] [2023-12-15 20:27:18,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116742950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:27:18,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:27:18,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:27:18,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831053811] [2023-12-15 20:27:18,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:18,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:27:18,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:18,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:27:18,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:27:18,213 INFO L87 Difference]: Start difference. First operand 214 states and 306 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:18,616 INFO L93 Difference]: Finished difference Result 526 states and 748 transitions. [2023-12-15 20:27:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 20:27:18,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 254 [2023-12-15 20:27:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:18,618 INFO L225 Difference]: With dead ends: 526 [2023-12-15 20:27:18,618 INFO L226 Difference]: Without dead ends: 320 [2023-12-15 20:27:18,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-12-15 20:27:18,619 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 135 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:18,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 884 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:27:18,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-15 20:27:18,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 214. [2023-12-15 20:27:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 161 states have (on average 1.329192546583851) internal successors, (214), 163 states have internal predecessors, (214), 46 states have call successors, (46), 6 states have call predecessors, (46), 6 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-15 20:27:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 306 transitions. [2023-12-15 20:27:18,631 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 306 transitions. Word has length 254 [2023-12-15 20:27:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:18,632 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 306 transitions. [2023-12-15 20:27:18,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:18,632 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 306 transitions. [2023-12-15 20:27:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-15 20:27:18,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:18,634 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:18,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:27:18,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:18,840 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:18,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:18,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2143170116, now seen corresponding path program 1 times [2023-12-15 20:27:18,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:18,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735059697] [2023-12-15 20:27:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:18,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:18,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:18,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431563124] [2023-12-15 20:27:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:18,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:18,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:18,872 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:27:18,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:27:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:18,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 20:27:18,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1147 proven. 36 refuted. 0 times theorem prover too weak. 1937 trivial. 0 not checked. [2023-12-15 20:27:19,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:27:22,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:22,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735059697] [2023-12-15 20:27:22,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:22,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431563124] [2023-12-15 20:27:22,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431563124] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:27:22,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:27:22,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-15 20:27:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535132234] [2023-12-15 20:27:22,360 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 20:27:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:27:22,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:27:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:27:22,362 INFO L87 Difference]: Start difference. First operand 214 states and 306 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-15 20:27:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:22,890 INFO L93 Difference]: Finished difference Result 638 states and 910 transitions. [2023-12-15 20:27:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 20:27:22,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 254 [2023-12-15 20:27:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:22,893 INFO L225 Difference]: With dead ends: 638 [2023-12-15 20:27:22,893 INFO L226 Difference]: Without dead ends: 432 [2023-12-15 20:27:22,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:27:22,894 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 102 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:22,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 867 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:27:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-15 20:27:22,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2023-12-15 20:27:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 322 states have (on average 1.3167701863354038) internal successors, (424), 325 states have internal predecessors, (424), 90 states have call successors, (90), 13 states have call predecessors, (90), 13 states have return successors, (90), 87 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-15 20:27:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 604 transitions. [2023-12-15 20:27:22,915 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 604 transitions. Word has length 254 [2023-12-15 20:27:22,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:22,916 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 604 transitions. [2023-12-15 20:27:22,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-15 20:27:22,916 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 604 transitions. [2023-12-15 20:27:22,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-15 20:27:22,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:22,917 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:22,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:27:23,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:23,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:23,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash 157652474, now seen corresponding path program 1 times [2023-12-15 20:27:23,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:23,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233021742] [2023-12-15 20:27:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:23,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:23,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:23,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078734648] [2023-12-15 20:27:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:23,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:23,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:23,147 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:27:23,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:27:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:23,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:27:23,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:24,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:27:24,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:24,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233021742] [2023-12-15 20:27:24,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:24,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078734648] [2023-12-15 20:27:24,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078734648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:27:24,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:27:24,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 20:27:24,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27527068] [2023-12-15 20:27:24,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:24,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:27:24,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:24,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:27:24,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:27:24,463 INFO L87 Difference]: Start difference. First operand 426 states and 604 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:25,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:25,096 INFO L93 Difference]: Finished difference Result 794 states and 1126 transitions. [2023-12-15 20:27:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 20:27:25,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 254 [2023-12-15 20:27:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:25,099 INFO L225 Difference]: With dead ends: 794 [2023-12-15 20:27:25,099 INFO L226 Difference]: Without dead ends: 588 [2023-12-15 20:27:25,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-15 20:27:25,100 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 107 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:25,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 940 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:27:25,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-12-15 20:27:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 434. [2023-12-15 20:27:25,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 330 states have (on average 1.3212121212121213) internal successors, (436), 333 states have internal predecessors, (436), 90 states have call successors, (90), 13 states have call predecessors, (90), 13 states have return successors, (90), 87 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-15 20:27:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 616 transitions. [2023-12-15 20:27:25,121 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 616 transitions. Word has length 254 [2023-12-15 20:27:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:25,121 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 616 transitions. [2023-12-15 20:27:25,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 616 transitions. [2023-12-15 20:27:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-15 20:27:25,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:25,123 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:25,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:27:25,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 20:27:25,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:25,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:25,329 INFO L85 PathProgramCache]: Analyzing trace with hash 858717052, now seen corresponding path program 1 times [2023-12-15 20:27:25,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:25,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263345060] [2023-12-15 20:27:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:25,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:25,346 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:25,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756064615] [2023-12-15 20:27:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:25,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:25,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:25,349 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:27:25,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:27:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:25,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-15 20:27:25,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1290 proven. 192 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2023-12-15 20:27:26,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:27:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:34,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:34,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263345060] [2023-12-15 20:27:34,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:34,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756064615] [2023-12-15 20:27:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756064615] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 20:27:34,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:27:34,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-12-15 20:27:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566912673] [2023-12-15 20:27:34,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:34,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:27:34,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:34,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:27:34,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-12-15 20:27:34,568 INFO L87 Difference]: Start difference. First operand 434 states and 616 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:40,137 INFO L93 Difference]: Finished difference Result 992 states and 1401 transitions. [2023-12-15 20:27:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 20:27:40,139 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 254 [2023-12-15 20:27:40,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:40,141 INFO L225 Difference]: With dead ends: 992 [2023-12-15 20:27:40,141 INFO L226 Difference]: Without dead ends: 566 [2023-12-15 20:27:40,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2023-12-15 20:27:40,142 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 118 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:40,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1193 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-15 20:27:40,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-12-15 20:27:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 426. [2023-12-15 20:27:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 322 states have (on average 1.3167701863354038) internal successors, (424), 325 states have internal predecessors, (424), 90 states have call successors, (90), 13 states have call predecessors, (90), 13 states have return successors, (90), 87 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-15 20:27:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 604 transitions. [2023-12-15 20:27:40,164 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 604 transitions. Word has length 254 [2023-12-15 20:27:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:40,164 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 604 transitions. [2023-12-15 20:27:40,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 604 transitions. [2023-12-15 20:27:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-15 20:27:40,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:40,166 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:40,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 20:27:40,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:40,371 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:40,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:40,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1735852522, now seen corresponding path program 1 times [2023-12-15 20:27:40,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:40,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067428700] [2023-12-15 20:27:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:40,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:40,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:40,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263933487] [2023-12-15 20:27:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:40,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:40,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:40,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:27:40,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 20:27:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:40,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:27:40,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:40,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:27:40,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:40,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067428700] [2023-12-15 20:27:40,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:40,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263933487] [2023-12-15 20:27:40,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263933487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:27:40,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:27:40,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:27:40,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635989769] [2023-12-15 20:27:40,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:40,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:27:40,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:40,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:27:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:27:40,574 INFO L87 Difference]: Start difference. First operand 426 states and 604 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:40,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:40,657 INFO L93 Difference]: Finished difference Result 1002 states and 1414 transitions. [2023-12-15 20:27:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:27:40,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 255 [2023-12-15 20:27:40,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:40,661 INFO L225 Difference]: With dead ends: 1002 [2023-12-15 20:27:40,661 INFO L226 Difference]: Without dead ends: 584 [2023-12-15 20:27:40,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:27:40,663 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 43 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:40,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 323 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:27:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-15 20:27:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 539. [2023-12-15 20:27:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 432 states have (on average 1.3333333333333333) internal successors, (576), 436 states have internal predecessors, (576), 92 states have call successors, (92), 14 states have call predecessors, (92), 14 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-15 20:27:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 760 transitions. [2023-12-15 20:27:40,690 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 760 transitions. Word has length 255 [2023-12-15 20:27:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:40,691 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 760 transitions. [2023-12-15 20:27:40,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 760 transitions. [2023-12-15 20:27:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-15 20:27:40,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:40,692 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:40,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 20:27:40,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 20:27:40,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:40,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1405530653, now seen corresponding path program 1 times [2023-12-15 20:27:40,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232350021] [2023-12-15 20:27:40,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:40,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:40,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:40,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125453195] [2023-12-15 20:27:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:40,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:40,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:40,915 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:27:40,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 20:27:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:41,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:27:41,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:41,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:27:41,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:41,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232350021] [2023-12-15 20:27:41,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:41,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125453195] [2023-12-15 20:27:41,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125453195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:27:41,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:27:41,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:27:41,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321672840] [2023-12-15 20:27:41,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:41,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:27:41,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:41,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:27:41,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:27:41,091 INFO L87 Difference]: Start difference. First operand 539 states and 760 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:41,167 INFO L93 Difference]: Finished difference Result 1123 states and 1572 transitions. [2023-12-15 20:27:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:27:41,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 255 [2023-12-15 20:27:41,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:41,169 INFO L225 Difference]: With dead ends: 1123 [2023-12-15 20:27:41,169 INFO L226 Difference]: Without dead ends: 585 [2023-12-15 20:27:41,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:27:41,171 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 41 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:41,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 284 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:27:41,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-12-15 20:27:41,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 515. [2023-12-15 20:27:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 412 states have (on average 1.3106796116504855) internal successors, (540), 414 states have internal predecessors, (540), 88 states have call successors, (88), 14 states have call predecessors, (88), 14 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-15 20:27:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 716 transitions. [2023-12-15 20:27:41,192 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 716 transitions. Word has length 255 [2023-12-15 20:27:41,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:41,193 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 716 transitions. [2023-12-15 20:27:41,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:41,193 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 716 transitions. [2023-12-15 20:27:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-15 20:27:41,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:41,194 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:41,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:27:41,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 20:27:41,399 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:41,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1701780489, now seen corresponding path program 1 times [2023-12-15 20:27:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:41,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383498741] [2023-12-15 20:27:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:41,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:41,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:41,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615032273] [2023-12-15 20:27:41,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:41,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:41,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:41,419 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:27:41,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 20:27:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:41,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:27:41,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:42,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:27:42,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:42,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383498741] [2023-12-15 20:27:42,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:42,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615032273] [2023-12-15 20:27:42,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615032273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:27:42,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:27:42,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:27:42,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282796212] [2023-12-15 20:27:42,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:42,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:27:42,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:27:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:27:42,276 INFO L87 Difference]: Start difference. First operand 515 states and 716 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:42,675 INFO L93 Difference]: Finished difference Result 1035 states and 1428 transitions. [2023-12-15 20:27:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 20:27:42,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 255 [2023-12-15 20:27:42,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:42,678 INFO L225 Difference]: With dead ends: 1035 [2023-12-15 20:27:42,678 INFO L226 Difference]: Without dead ends: 781 [2023-12-15 20:27:42,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:27:42,679 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 203 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:42,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 966 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:27:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-15 20:27:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 585. [2023-12-15 20:27:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 482 states have (on average 1.3319502074688796) internal successors, (642), 484 states have internal predecessors, (642), 88 states have call successors, (88), 14 states have call predecessors, (88), 14 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-15 20:27:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 818 transitions. [2023-12-15 20:27:42,704 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 818 transitions. Word has length 255 [2023-12-15 20:27:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:42,705 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 818 transitions. [2023-12-15 20:27:42,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 818 transitions. [2023-12-15 20:27:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-15 20:27:42,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:42,706 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:42,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 20:27:42,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 20:27:42,911 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:42,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:42,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1892122229, now seen corresponding path program 1 times [2023-12-15 20:27:42,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:42,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072804564] [2023-12-15 20:27:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:42,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:42,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:42,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235022047] [2023-12-15 20:27:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:42,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:42,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:42,933 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:27:42,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 20:27:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:43,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 20:27:43,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:43,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:27:43,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:43,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072804564] [2023-12-15 20:27:43,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:43,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235022047] [2023-12-15 20:27:43,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235022047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:27:43,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:27:43,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 20:27:43,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383080450] [2023-12-15 20:27:43,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:43,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:27:43,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:43,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:27:43,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:27:43,566 INFO L87 Difference]: Start difference. First operand 585 states and 818 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:44,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:27:44,062 INFO L93 Difference]: Finished difference Result 1365 states and 1885 transitions. [2023-12-15 20:27:44,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 20:27:44,062 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 255 [2023-12-15 20:27:44,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:27:44,065 INFO L225 Difference]: With dead ends: 1365 [2023-12-15 20:27:44,065 INFO L226 Difference]: Without dead ends: 781 [2023-12-15 20:27:44,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-12-15 20:27:44,067 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 198 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:27:44,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1291 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:27:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-15 20:27:44,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 577. [2023-12-15 20:27:44,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 474 states have (on average 1.3291139240506329) internal successors, (630), 476 states have internal predecessors, (630), 88 states have call successors, (88), 14 states have call predecessors, (88), 14 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-15 20:27:44,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 806 transitions. [2023-12-15 20:27:44,090 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 806 transitions. Word has length 255 [2023-12-15 20:27:44,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:27:44,090 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 806 transitions. [2023-12-15 20:27:44,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:27:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 806 transitions. [2023-12-15 20:27:44,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-15 20:27:44,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:27:44,092 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:27:44,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-15 20:27:44,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 20:27:44,297 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:27:44,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:27:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1114974475, now seen corresponding path program 1 times [2023-12-15 20:27:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:27:44,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962266093] [2023-12-15 20:27:44,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:44,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:27:44,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:27:44,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15613222] [2023-12-15 20:27:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:27:44,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:27:44,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:27:44,322 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:27:44,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 20:27:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:27:44,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-15 20:27:44,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:27:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1554 proven. 330 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2023-12-15 20:27:46,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:27:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-15 20:27:54,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:27:54,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962266093] [2023-12-15 20:27:54,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:27:54,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15613222] [2023-12-15 20:27:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15613222] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 20:27:54,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:27:54,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22] total 29 [2023-12-15 20:27:54,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941650733] [2023-12-15 20:27:54,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:27:54,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:27:54,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:27:54,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:27:54,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2023-12-15 20:27:54,927 INFO L87 Difference]: Start difference. First operand 577 states and 806 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:28:01,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:28:01,022 INFO L93 Difference]: Finished difference Result 984 states and 1358 transitions. [2023-12-15 20:28:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 20:28:01,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 255 [2023-12-15 20:28:01,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:28:01,025 INFO L225 Difference]: With dead ends: 984 [2023-12-15 20:28:01,025 INFO L226 Difference]: Without dead ends: 699 [2023-12-15 20:28:01,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2023-12-15 20:28:01,027 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 153 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 20:28:01,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1276 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 20:28:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-12-15 20:28:01,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 577. [2023-12-15 20:28:01,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 474 states have (on average 1.3291139240506329) internal successors, (630), 476 states have internal predecessors, (630), 88 states have call successors, (88), 14 states have call predecessors, (88), 14 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-15 20:28:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 806 transitions. [2023-12-15 20:28:01,062 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 806 transitions. Word has length 255 [2023-12-15 20:28:01,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:28:01,063 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 806 transitions. [2023-12-15 20:28:01,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-15 20:28:01,063 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 806 transitions. [2023-12-15 20:28:01,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-15 20:28:01,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:28:01,064 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:28:01,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 20:28:01,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:28:01,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:28:01,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:28:01,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1816039053, now seen corresponding path program 1 times [2023-12-15 20:28:01,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:28:01,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231174197] [2023-12-15 20:28:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:28:01,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:28:01,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:28:01,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300816903] [2023-12-15 20:28:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:28:01,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:28:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:28:01,312 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:28:01,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Received shutdown request... [2023-12-15 20:28:01,510 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 [2023-12-15 20:28:01,515 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:28:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:28:01,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-15 20:28:01,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:28:01,527 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:28:01,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 20:28:01,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 20:28:01,728 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 256 with TraceHistMax 40,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-15 20:28:01,732 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:28:01,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:28:01,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:28:01 BoogieIcfgContainer [2023-12-15 20:28:01,735 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:28:01,735 INFO L158 Benchmark]: Toolchain (without parser) took 69175.70ms. Allocated memory was 198.2MB in the beginning and 486.5MB in the end (delta: 288.4MB). Free memory was 163.9MB in the beginning and 412.6MB in the end (delta: -248.7MB). Peak memory consumption was 41.8MB. Max. memory is 8.0GB. [2023-12-15 20:28:01,736 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 198.2MB. Free memory is still 155.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:28:01,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.84ms. Allocated memory is still 198.2MB. Free memory was 163.5MB in the beginning and 147.1MB in the end (delta: 16.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 20:28:01,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.81ms. Allocated memory is still 198.2MB. Free memory was 147.1MB in the beginning and 142.2MB in the end (delta: 5.0MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:28:01,736 INFO L158 Benchmark]: Boogie Preprocessor took 67.06ms. Allocated memory is still 198.2MB. Free memory was 142.2MB in the beginning and 135.6MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 20:28:01,736 INFO L158 Benchmark]: RCFGBuilder took 467.37ms. Allocated memory is still 198.2MB. Free memory was 135.6MB in the beginning and 102.7MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-15 20:28:01,737 INFO L158 Benchmark]: TraceAbstraction took 68330.27ms. Allocated memory was 198.2MB in the beginning and 486.5MB in the end (delta: 288.4MB). Free memory was 102.0MB in the beginning and 412.6MB in the end (delta: -310.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:28:01,737 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 198.2MB. Free memory is still 155.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 244.84ms. Allocated memory is still 198.2MB. Free memory was 163.5MB in the beginning and 147.1MB in the end (delta: 16.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.81ms. Allocated memory is still 198.2MB. Free memory was 147.1MB in the beginning and 142.2MB in the end (delta: 5.0MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.06ms. Allocated memory is still 198.2MB. Free memory was 142.2MB in the beginning and 135.6MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 467.37ms. Allocated memory is still 198.2MB. Free memory was 135.6MB in the beginning and 102.7MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 68330.27ms. Allocated memory was 198.2MB in the beginning and 486.5MB in the end (delta: 288.4MB). Free memory was 102.0MB in the beginning and 412.6MB in the end (delta: -310.6MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 256 with TraceHistMax 40,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.3s, OverallIterations: 15, TraceHistogramMax: 40, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1763 SdHoareTripleChecker+Valid, 9.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1731 mSDsluCounter, 10553 SdHoareTripleChecker+Invalid, 9.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8296 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3884 IncrementalHoareTripleChecker+Invalid, 3962 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 2257 mSDtfsCounter, 3884 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4424 GetRequests, 4246 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=585occurred in iteration=12, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 1152 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 42.4s InterpolantComputationTime, 3554 NumberOfCodeBlocks, 3554 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4299 ConstructedInterpolants, 0 QuantifiedInterpolants, 20878 SizeOfPredicates, 128 NumberOfNonLiveVariables, 7941 ConjunctsInSsa, 165 ConjunctsInUnsatCore, 17 InterpolantComputations, 12 PerfectInterpolantSequences, 52260/53040 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