/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_operatoramount_amount500_file-68.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:21:16,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:21:16,793 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 21:21:16,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:21:16,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:21:16,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:21:16,815 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:21:16,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:21:16,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:21:16,818 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:21:16,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:21:16,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:21:16,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:21:16,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:21:16,820 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:21:16,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:21:16,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:21:16,821 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:21:16,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:21:16,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:21:16,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:21:16,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:21:16,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:21:16,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:21:16,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:21:16,822 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:21:16,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:21:16,822 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:21:16,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:21:16,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:21:16,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:21:16,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:21:16,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:21:16,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:21:16,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:21:16,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:21:16,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:21:16,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:21:16,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:21:16,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:21:16,825 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:21:16,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:21:16,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:21:16,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:21:17,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:21:17,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:21:17,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:21:17,032 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:21:17,034 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:21:17,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-68.i [2023-12-15 21:21:17,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:21:18,206 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:21:18,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-68.i [2023-12-15 21:21:18,217 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525bdadf1/fd8f21a891724d259a9d45b7aa2ebdb7/FLAG2aea126cb [2023-12-15 21:21:18,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525bdadf1/fd8f21a891724d259a9d45b7aa2ebdb7 [2023-12-15 21:21:18,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:21:18,235 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:21:18,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:21:18,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:21:18,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:21:18,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@107f626b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18, skipping insertion in model container [2023-12-15 21:21:18,240 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,299 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:21:18,422 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_operatoramount_amount500_file-68.i[916,929] [2023-12-15 21:21:18,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:21:18,611 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:21:18,629 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_operatoramount_amount500_file-68.i[916,929] [2023-12-15 21:21:18,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:21:18,735 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:21:18,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18 WrapperNode [2023-12-15 21:21:18,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:21:18,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:21:18,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:21:18,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:21:18,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,844 INFO L138 Inliner]: procedures = 26, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 701 [2023-12-15 21:21:18,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:21:18,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:21:18,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:21:18,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:21:18,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,940 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 21:21:18,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:18,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:19,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:19,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:21:19,022 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:21:19,022 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:21:19,023 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:21:19,023 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (1/1) ... [2023-12-15 21:21:19,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:21:19,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:19,049 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 21:21:19,071 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 21:21:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:21:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:21:19,077 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:21:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:21:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:21:19,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:21:19,178 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:21:19,181 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:21:19,977 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:21:20,049 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:21:20,049 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:21:20,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:21:20 BoogieIcfgContainer [2023-12-15 21:21:20,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:21:20,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:21:20,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:21:20,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:21:20,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:21:18" (1/3) ... [2023-12-15 21:21:20,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498a0497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:21:20, skipping insertion in model container [2023-12-15 21:21:20,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:18" (2/3) ... [2023-12-15 21:21:20,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498a0497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:21:20, skipping insertion in model container [2023-12-15 21:21:20,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:21:20" (3/3) ... [2023-12-15 21:21:20,056 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-68.i [2023-12-15 21:21:20,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:21:20,067 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:21:20,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:21:20,123 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;@28f0cdb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:21:20,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:21:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 193 states have (on average 1.549222797927461) internal successors, (299), 194 states have internal predecessors, (299), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 21:21:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-15 21:21:20,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:20,169 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:20,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:20,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:20,175 INFO L85 PathProgramCache]: Analyzing trace with hash -417427043, now seen corresponding path program 1 times [2023-12-15 21:21:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:20,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585523905] [2023-12-15 21:21:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:20,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:20,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:20,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585523905] [2023-12-15 21:21:20,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:21:20,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203155983] [2023-12-15 21:21:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:20,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:20,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:20,499 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 21:21:20,502 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 21:21:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:20,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:21:20,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2023-12-15 21:21:20,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:20,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203155983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:20,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:20,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:21:20,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10843707] [2023-12-15 21:21:20,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:21,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:21:21,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:21:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:21:21,037 INFO L87 Difference]: Start difference. First operand has 272 states, 193 states have (on average 1.549222797927461) internal successors, (299), 194 states have internal predecessors, (299), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-15 21:21:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:21,135 INFO L93 Difference]: Finished difference Result 541 states and 976 transitions. [2023-12-15 21:21:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:21:21,140 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 524 [2023-12-15 21:21:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:21,152 INFO L225 Difference]: With dead ends: 541 [2023-12-15 21:21:21,152 INFO L226 Difference]: Without dead ends: 270 [2023-12-15 21:21:21,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:21:21,161 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:21,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 441 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:21:21,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-15 21:21:21,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-12-15 21:21:21,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 192 states have (on average 1.5208333333333333) internal successors, (292), 192 states have internal predecessors, (292), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 21:21:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 444 transitions. [2023-12-15 21:21:21,235 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 444 transitions. Word has length 524 [2023-12-15 21:21:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:21,236 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 444 transitions. [2023-12-15 21:21:21,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-15 21:21:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 444 transitions. [2023-12-15 21:21:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-15 21:21:21,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:21,243 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:21,256 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 21:21:21,456 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 21:21:21,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:21,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:21,457 INFO L85 PathProgramCache]: Analyzing trace with hash -774079679, now seen corresponding path program 1 times [2023-12-15 21:21:21,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:21,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309719734] [2023-12-15 21:21:21,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:21,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:21,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:21,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81505421] [2023-12-15 21:21:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:21,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:21,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:21,559 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 21:21:21,566 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 21:21:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:21,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:21:21,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-15 21:21:21,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:21,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:21,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309719734] [2023-12-15 21:21:21,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:21,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81505421] [2023-12-15 21:21:21,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81505421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:21,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:21,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:21:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077817138] [2023-12-15 21:21:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:21,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:21:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:21,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:21:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:21:21,973 INFO L87 Difference]: Start difference. First operand 270 states and 444 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:22,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:22,075 INFO L93 Difference]: Finished difference Result 807 states and 1328 transitions. [2023-12-15 21:21:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:21:22,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 525 [2023-12-15 21:21:22,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:22,079 INFO L225 Difference]: With dead ends: 807 [2023-12-15 21:21:22,079 INFO L226 Difference]: Without dead ends: 538 [2023-12-15 21:21:22,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 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 21:21:22,081 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 427 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:22,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1106 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:21:22,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-15 21:21:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2023-12-15 21:21:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 381 states have (on average 1.5091863517060367) internal successors, (575), 381 states have internal predecessors, (575), 152 states have call successors, (152), 2 states have call predecessors, (152), 2 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-15 21:21:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 879 transitions. [2023-12-15 21:21:22,126 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 879 transitions. Word has length 525 [2023-12-15 21:21:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:22,127 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 879 transitions. [2023-12-15 21:21:22,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 879 transitions. [2023-12-15 21:21:22,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-15 21:21:22,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:22,133 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:22,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:22,344 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 21:21:22,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:22,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:22,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1134378111, now seen corresponding path program 1 times [2023-12-15 21:21:22,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:22,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045637642] [2023-12-15 21:21:22,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:22,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:22,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:22,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105417840] [2023-12-15 21:21:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:22,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:22,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:22,411 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 21:21:22,439 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 21:21:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:22,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:21:22,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-15 21:21:22,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:22,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045637642] [2023-12-15 21:21:22,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105417840] [2023-12-15 21:21:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105417840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:22,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:22,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:21:22,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927211281] [2023-12-15 21:21:22,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:22,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:21:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:21:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:21:22,771 INFO L87 Difference]: Start difference. First operand 536 states and 879 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:22,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:22,868 INFO L93 Difference]: Finished difference Result 1602 states and 2627 transitions. [2023-12-15 21:21:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:21:22,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 525 [2023-12-15 21:21:22,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:22,875 INFO L225 Difference]: With dead ends: 1602 [2023-12-15 21:21:22,875 INFO L226 Difference]: Without dead ends: 1067 [2023-12-15 21:21:22,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 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 21:21:22,879 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 434 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:22,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1225 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:21:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2023-12-15 21:21:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2023-12-15 21:21:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 756 states have (on average 1.4947089947089947) internal successors, (1130), 756 states have internal predecessors, (1130), 304 states have call successors, (304), 4 states have call predecessors, (304), 4 states have return successors, (304), 304 states have call predecessors, (304), 304 states have call successors, (304) [2023-12-15 21:21:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1738 transitions. [2023-12-15 21:21:22,957 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1738 transitions. Word has length 525 [2023-12-15 21:21:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:22,960 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1738 transitions. [2023-12-15 21:21:22,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1738 transitions. [2023-12-15 21:21:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-15 21:21:22,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:22,965 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:22,973 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 21:21:23,173 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 21:21:23,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:23,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash 988157819, now seen corresponding path program 1 times [2023-12-15 21:21:23,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:23,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684465461] [2023-12-15 21:21:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:23,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:23,261 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:23,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151274178] [2023-12-15 21:21:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:23,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:23,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:23,263 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 21:21:23,294 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 21:21:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:23,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:21:23,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-15 21:21:24,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:24,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:24,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684465461] [2023-12-15 21:21:24,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:24,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151274178] [2023-12-15 21:21:24,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151274178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:24,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:24,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:21:24,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996424184] [2023-12-15 21:21:24,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:24,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:21:24,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:24,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:21:24,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:21:24,007 INFO L87 Difference]: Start difference. First operand 1065 states and 1738 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:24,241 INFO L93 Difference]: Finished difference Result 2643 states and 4316 transitions. [2023-12-15 21:21:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:21:24,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 525 [2023-12-15 21:21:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:24,248 INFO L225 Difference]: With dead ends: 2643 [2023-12-15 21:21:24,248 INFO L226 Difference]: Without dead ends: 1579 [2023-12-15 21:21:24,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:21:24,251 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 450 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:24,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1682 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:21:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-12-15 21:21:24,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1247. [2023-12-15 21:21:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 861 states have (on average 1.4715447154471544) internal successors, (1267), 861 states have internal predecessors, (1267), 380 states have call successors, (380), 5 states have call predecessors, (380), 5 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2023-12-15 21:21:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2027 transitions. [2023-12-15 21:21:24,367 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2027 transitions. Word has length 525 [2023-12-15 21:21:24,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:24,367 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2027 transitions. [2023-12-15 21:21:24,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2027 transitions. [2023-12-15 21:21:24,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:21:24,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:24,370 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:24,377 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 21:21:24,577 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 21:21:24,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:24,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:24,578 INFO L85 PathProgramCache]: Analyzing trace with hash 210487795, now seen corresponding path program 1 times [2023-12-15 21:21:24,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:24,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332348362] [2023-12-15 21:21:24,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:24,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:24,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211146533] [2023-12-15 21:21:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:24,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:24,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:24,623 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 21:21:24,640 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 21:21:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:24,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:21:24,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-15 21:21:24,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:24,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:24,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332348362] [2023-12-15 21:21:24,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:24,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211146533] [2023-12-15 21:21:24,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211146533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:24,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:24,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:21:24,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992601359] [2023-12-15 21:21:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:24,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:21:24,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:24,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:21:24,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:21:24,999 INFO L87 Difference]: Start difference. First operand 1247 states and 2027 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:25,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:25,558 INFO L93 Difference]: Finished difference Result 3446 states and 5574 transitions. [2023-12-15 21:21:25,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:21:25,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 526 [2023-12-15 21:21:25,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:25,568 INFO L225 Difference]: With dead ends: 3446 [2023-12-15 21:21:25,568 INFO L226 Difference]: Without dead ends: 2354 [2023-12-15 21:21:25,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:21:25,571 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1164 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:25,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 1032 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:21:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2023-12-15 21:21:25,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2344. [2023-12-15 21:21:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 1637 states have (on average 1.4544899205864386) internal successors, (2381), 1641 states have internal predecessors, (2381), 692 states have call successors, (692), 14 states have call predecessors, (692), 14 states have return successors, (692), 688 states have call predecessors, (692), 692 states have call successors, (692) [2023-12-15 21:21:25,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 3765 transitions. [2023-12-15 21:21:25,691 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 3765 transitions. Word has length 526 [2023-12-15 21:21:25,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:25,692 INFO L495 AbstractCegarLoop]: Abstraction has 2344 states and 3765 transitions. [2023-12-15 21:21:25,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:25,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 3765 transitions. [2023-12-15 21:21:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:21:25,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:25,695 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:25,706 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 21:21:25,903 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 21:21:25,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:25,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1247677517, now seen corresponding path program 1 times [2023-12-15 21:21:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:25,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962261717] [2023-12-15 21:21:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:25,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:25,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:25,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399364577] [2023-12-15 21:21:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:25,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:25,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:25,988 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 21:21:25,992 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 21:21:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:26,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:21:26,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-15 21:21:26,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:26,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962261717] [2023-12-15 21:21:26,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399364577] [2023-12-15 21:21:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399364577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:26,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:26,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:21:26,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803215812] [2023-12-15 21:21:26,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:26,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:21:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:21:26,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:21:26,387 INFO L87 Difference]: Start difference. First operand 2344 states and 3765 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:26,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:26,992 INFO L93 Difference]: Finished difference Result 9964 states and 15965 transitions. [2023-12-15 21:21:26,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:21:26,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 526 [2023-12-15 21:21:26,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:27,026 INFO L225 Difference]: With dead ends: 9964 [2023-12-15 21:21:27,026 INFO L226 Difference]: Without dead ends: 7830 [2023-12-15 21:21:27,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:21:27,036 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1086 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:27,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 2807 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:21:27,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7830 states. [2023-12-15 21:21:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7830 to 2764. [2023-12-15 21:21:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2057 states have (on average 1.4880894506562956) internal successors, (3061), 2061 states have internal predecessors, (3061), 692 states have call successors, (692), 14 states have call predecessors, (692), 14 states have return successors, (692), 688 states have call predecessors, (692), 692 states have call successors, (692) [2023-12-15 21:21:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4445 transitions. [2023-12-15 21:21:27,306 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4445 transitions. Word has length 526 [2023-12-15 21:21:27,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:27,307 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 4445 transitions. [2023-12-15 21:21:27,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4445 transitions. [2023-12-15 21:21:27,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:21:27,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:27,310 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:27,318 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 21:21:27,518 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 21:21:27,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:27,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:27,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1602221235, now seen corresponding path program 1 times [2023-12-15 21:21:27,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:27,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836963290] [2023-12-15 21:21:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:27,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:27,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:27,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313166283] [2023-12-15 21:21:27,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:27,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:27,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:27,562 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 21:21:27,565 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 21:21:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:27,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:21:27,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-15 21:21:27,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:27,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:27,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836963290] [2023-12-15 21:21:27,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:27,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313166283] [2023-12-15 21:21:27,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313166283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:27,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:27,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:21:27,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947493531] [2023-12-15 21:21:27,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:27,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:21:27,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:21:27,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:21:27,994 INFO L87 Difference]: Start difference. First operand 2764 states and 4445 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:28,610 INFO L93 Difference]: Finished difference Result 7924 states and 12701 transitions. [2023-12-15 21:21:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:21:28,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 526 [2023-12-15 21:21:28,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:28,627 INFO L225 Difference]: With dead ends: 7924 [2023-12-15 21:21:28,627 INFO L226 Difference]: Without dead ends: 5286 [2023-12-15 21:21:28,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:21:28,636 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 899 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:28,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 976 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:21:28,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2023-12-15 21:21:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 3828. [2023-12-15 21:21:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3115 states have (on average 1.524558587479936) internal successors, (4749), 3119 states have internal predecessors, (4749), 692 states have call successors, (692), 20 states have call predecessors, (692), 20 states have return successors, (692), 688 states have call predecessors, (692), 692 states have call successors, (692) [2023-12-15 21:21:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 6133 transitions. [2023-12-15 21:21:28,822 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 6133 transitions. Word has length 526 [2023-12-15 21:21:28,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:28,823 INFO L495 AbstractCegarLoop]: Abstraction has 3828 states and 6133 transitions. [2023-12-15 21:21:28,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:28,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 6133 transitions. [2023-12-15 21:21:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:21:28,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:28,827 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:28,837 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 21:21:29,037 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 21:21:29,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:29,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:29,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1309717131, now seen corresponding path program 1 times [2023-12-15 21:21:29,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:29,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536506636] [2023-12-15 21:21:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:29,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:29,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:29,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557960170] [2023-12-15 21:21:29,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:29,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:29,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:29,091 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 21:21:29,118 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 21:21:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:29,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:21:29,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5755 proven. 105 refuted. 0 times theorem prover too weak. 5540 trivial. 0 not checked. [2023-12-15 21:21:29,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-15 21:21:29,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536506636] [2023-12-15 21:21:29,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557960170] [2023-12-15 21:21:29,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557960170] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:29,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:29,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:21:29,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85812935] [2023-12-15 21:21:29,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:29,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:21:29,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:29,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:21:29,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:21:29,986 INFO L87 Difference]: Start difference. First operand 3828 states and 6133 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-12-15 21:21:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:30,537 INFO L93 Difference]: Finished difference Result 7162 states and 11461 transitions. [2023-12-15 21:21:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:21:30,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 526 [2023-12-15 21:21:30,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:30,554 INFO L225 Difference]: With dead ends: 7162 [2023-12-15 21:21:30,554 INFO L226 Difference]: Without dead ends: 3524 [2023-12-15 21:21:30,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 1044 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:21:30,562 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 536 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:30,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1009 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:21:30,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2023-12-15 21:21:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3496. [2023-12-15 21:21:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3496 states, 2936 states have (on average 1.534741144414169) internal successors, (4506), 2940 states have internal predecessors, (4506), 540 states have call successors, (540), 19 states have call predecessors, (540), 19 states have return successors, (540), 536 states have call predecessors, (540), 540 states have call successors, (540) [2023-12-15 21:21:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 5586 transitions. [2023-12-15 21:21:30,745 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 5586 transitions. Word has length 526 [2023-12-15 21:21:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:30,746 INFO L495 AbstractCegarLoop]: Abstraction has 3496 states and 5586 transitions. [2023-12-15 21:21:30,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-12-15 21:21:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 5586 transitions. [2023-12-15 21:21:30,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-15 21:21:30,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:30,751 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:30,762 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 21:21:30,958 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 21:21:30,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:30,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:30,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1347277055, now seen corresponding path program 1 times [2023-12-15 21:21:30,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:30,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571491920] [2023-12-15 21:21:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:30,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:30,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:30,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056594741] [2023-12-15 21:21:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:30,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:30,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:31,000 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 21:21:31,002 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 21:21:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:31,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:21:31,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-15 21:21:31,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:31,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:31,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571491920] [2023-12-15 21:21:31,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:31,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056594741] [2023-12-15 21:21:31,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056594741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:31,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:31,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:21:31,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081653070] [2023-12-15 21:21:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:31,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:21:31,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:31,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:21:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:21:31,396 INFO L87 Difference]: Start difference. First operand 3496 states and 5586 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:31,666 INFO L93 Difference]: Finished difference Result 8958 states and 14306 transitions. [2023-12-15 21:21:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:21:31,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 527 [2023-12-15 21:21:31,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:31,688 INFO L225 Difference]: With dead ends: 8958 [2023-12-15 21:21:31,689 INFO L226 Difference]: Without dead ends: 5710 [2023-12-15 21:21:31,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:21:31,696 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 456 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:31,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1157 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:21:31,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2023-12-15 21:21:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 5700. [2023-12-15 21:21:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5044 states have (on average 1.5475812846946868) internal successors, (7806), 5056 states have internal predecessors, (7806), 628 states have call successors, (628), 27 states have call predecessors, (628), 27 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) [2023-12-15 21:21:31,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 9062 transitions. [2023-12-15 21:21:31,887 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 9062 transitions. Word has length 527 [2023-12-15 21:21:31,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:31,887 INFO L495 AbstractCegarLoop]: Abstraction has 5700 states and 9062 transitions. [2023-12-15 21:21:31,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:21:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 9062 transitions. [2023-12-15 21:21:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-15 21:21:31,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:31,895 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:31,905 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 21:21:32,103 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 21:21:32,103 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:32,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1962978817, now seen corresponding path program 1 times [2023-12-15 21:21:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:32,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838780036] [2023-12-15 21:21:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:32,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:32,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150379337] [2023-12-15 21:21:32,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:32,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:32,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:32,145 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 21:21:32,162 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 21:21:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:32,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:21:32,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5269 proven. 78 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2023-12-15 21:21:32,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 147 proven. 78 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-15 21:21:32,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:32,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838780036] [2023-12-15 21:21:32,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:32,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150379337] [2023-12-15 21:21:32,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150379337] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:32,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:32,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:21:32,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383072785] [2023-12-15 21:21:32,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:32,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:21:32,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:21:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:21:32,913 INFO L87 Difference]: Start difference. First operand 5700 states and 9062 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-15 21:21:33,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:33,339 INFO L93 Difference]: Finished difference Result 11270 states and 17884 transitions. [2023-12-15 21:21:33,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:21:33,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 527 [2023-12-15 21:21:33,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:33,356 INFO L225 Difference]: With dead ends: 11270 [2023-12-15 21:21:33,356 INFO L226 Difference]: Without dead ends: 5758 [2023-12-15 21:21:33,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1046 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:21:33,365 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 544 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:33,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 903 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:21:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2023-12-15 21:21:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 5720. [2023-12-15 21:21:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5059 states have (on average 1.541609013639059) internal successors, (7799), 5071 states have internal predecessors, (7799), 628 states have call successors, (628), 32 states have call predecessors, (628), 32 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) [2023-12-15 21:21:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 9055 transitions. [2023-12-15 21:21:33,621 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 9055 transitions. Word has length 527 [2023-12-15 21:21:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:33,621 INFO L495 AbstractCegarLoop]: Abstraction has 5720 states and 9055 transitions. [2023-12-15 21:21:33,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-15 21:21:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 9055 transitions. [2023-12-15 21:21:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-15 21:21:33,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:33,627 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:33,635 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 21:21:33,835 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 21:21:33,835 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:33,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:33,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1935913215, now seen corresponding path program 1 times [2023-12-15 21:21:33,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:33,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549314884] [2023-12-15 21:21:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:33,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:33,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:33,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449580101] [2023-12-15 21:21:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:33,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:33,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:33,901 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 21:21:33,927 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 21:21:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:34,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:21:34,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5685 proven. 126 refuted. 0 times theorem prover too weak. 5589 trivial. 0 not checked. [2023-12-15 21:21:34,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 99 proven. 126 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-15 21:21:34,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:34,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549314884] [2023-12-15 21:21:34,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:34,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449580101] [2023-12-15 21:21:34,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449580101] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:34,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:34,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-15 21:21:34,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340442016] [2023-12-15 21:21:34,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:34,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:21:34,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:34,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:21:34,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:21:34,799 INFO L87 Difference]: Start difference. First operand 5720 states and 9055 transitions. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-15 21:21:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:35,352 INFO L93 Difference]: Finished difference Result 11388 states and 17972 transitions. [2023-12-15 21:21:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:21:35,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) Word has length 527 [2023-12-15 21:21:35,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:35,366 INFO L225 Difference]: With dead ends: 11388 [2023-12-15 21:21:35,367 INFO L226 Difference]: Without dead ends: 5812 [2023-12-15 21:21:35,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1045 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:21:35,375 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 751 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:35,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 886 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:21:35,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2023-12-15 21:21:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 5756. [2023-12-15 21:21:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5756 states, 5086 states have (on average 1.5314589068029887) internal successors, (7789), 5098 states have internal predecessors, (7789), 628 states have call successors, (628), 41 states have call predecessors, (628), 41 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) [2023-12-15 21:21:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 9045 transitions. [2023-12-15 21:21:35,566 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 9045 transitions. Word has length 527 [2023-12-15 21:21:35,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:35,566 INFO L495 AbstractCegarLoop]: Abstraction has 5756 states and 9045 transitions. [2023-12-15 21:21:35,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-15 21:21:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 9045 transitions. [2023-12-15 21:21:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-15 21:21:35,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:35,573 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:35,586 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 21:21:35,780 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 21:21:35,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:35,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:35,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1941657475, now seen corresponding path program 1 times [2023-12-15 21:21:35,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:35,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138231973] [2023-12-15 21:21:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:35,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:35,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:35,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992231466] [2023-12-15 21:21:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:35,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:35,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:35,839 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 21:21:35,865 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 21:21:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:36,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-15 21:21:36,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 6815 proven. 747 refuted. 0 times theorem prover too weak. 3838 trivial. 0 not checked. [2023-12-15 21:21:38,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 240 proven. 642 refuted. 0 times theorem prover too weak. 10518 trivial. 0 not checked. [2023-12-15 21:21:40,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:40,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138231973] [2023-12-15 21:21:40,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:40,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992231466] [2023-12-15 21:21:40,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992231466] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:40,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:40,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 35 [2023-12-15 21:21:40,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898309355] [2023-12-15 21:21:40,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:40,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-15 21:21:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-15 21:21:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 21:21:40,544 INFO L87 Difference]: Start difference. First operand 5756 states and 9045 transitions. Second operand has 35 states, 35 states have (on average 8.628571428571428) internal successors, (302), 34 states have internal predecessors, (302), 10 states have call successors, (138), 6 states have call predecessors, (138), 14 states have return successors, (139), 10 states have call predecessors, (139), 10 states have call successors, (139) [2023-12-15 21:21:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:44,582 INFO L93 Difference]: Finished difference Result 23168 states and 35969 transitions. [2023-12-15 21:21:44,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-15 21:21:44,583 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.628571428571428) internal successors, (302), 34 states have internal predecessors, (302), 10 states have call successors, (138), 6 states have call predecessors, (138), 14 states have return successors, (139), 10 states have call predecessors, (139), 10 states have call successors, (139) Word has length 527 [2023-12-15 21:21:44,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:44,611 INFO L225 Difference]: With dead ends: 23168 [2023-12-15 21:21:44,611 INFO L226 Difference]: Without dead ends: 17668 [2023-12-15 21:21:44,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1030 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3921 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2872, Invalid=9784, Unknown=0, NotChecked=0, Total=12656 [2023-12-15 21:21:44,622 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 4289 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4302 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:44,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4302 Valid, 2696 Invalid, 3490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 2869 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 21:21:44,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17668 states. [2023-12-15 21:21:45,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17668 to 16622. [2023-12-15 21:21:45,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16622 states, 15111 states have (on average 1.534775990999934) internal successors, (23192), 15163 states have internal predecessors, (23192), 1328 states have call successors, (1328), 182 states have call predecessors, (1328), 182 states have return successors, (1328), 1276 states have call predecessors, (1328), 1328 states have call successors, (1328) [2023-12-15 21:21:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16622 states to 16622 states and 25848 transitions. [2023-12-15 21:21:45,209 INFO L78 Accepts]: Start accepts. Automaton has 16622 states and 25848 transitions. Word has length 527 [2023-12-15 21:21:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:45,209 INFO L495 AbstractCegarLoop]: Abstraction has 16622 states and 25848 transitions. [2023-12-15 21:21:45,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.628571428571428) internal successors, (302), 34 states have internal predecessors, (302), 10 states have call successors, (138), 6 states have call predecessors, (138), 14 states have return successors, (139), 10 states have call predecessors, (139), 10 states have call successors, (139) [2023-12-15 21:21:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 16622 states and 25848 transitions. [2023-12-15 21:21:45,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-15 21:21:45,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:45,224 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:45,234 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 21:21:45,431 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 21:21:45,432 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:45,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:45,433 INFO L85 PathProgramCache]: Analyzing trace with hash 136219141, now seen corresponding path program 1 times [2023-12-15 21:21:45,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:45,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795951972] [2023-12-15 21:21:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:45,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:45,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:45,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313056793] [2023-12-15 21:21:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:45,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:45,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:45,476 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 21:21:45,504 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 21:21:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:45,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-15 21:21:45,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 8753 proven. 696 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2023-12-15 21:21:48,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 456 proven. 426 refuted. 0 times theorem prover too weak. 10518 trivial. 0 not checked. [2023-12-15 21:21:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:53,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795951972] [2023-12-15 21:21:53,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:53,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313056793] [2023-12-15 21:21:53,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313056793] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:53,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:53,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25] total 53 [2023-12-15 21:21:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229599279] [2023-12-15 21:21:53,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:53,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-15 21:21:53,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-15 21:21:53,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=2168, Unknown=0, NotChecked=0, Total=2756 [2023-12-15 21:21:53,424 INFO L87 Difference]: Start difference. First operand 16622 states and 25848 transitions. Second operand has 53 states, 51 states have (on average 6.254901960784314) internal successors, (319), 51 states have internal predecessors, (319), 14 states have call successors, (140), 8 states have call predecessors, (140), 16 states have return successors, (141), 12 states have call predecessors, (141), 14 states have call successors, (141) [2023-12-15 21:22:12,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:22:12,776 INFO L93 Difference]: Finished difference Result 90664 states and 139118 transitions. [2023-12-15 21:22:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-12-15 21:22:12,777 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 51 states have (on average 6.254901960784314) internal successors, (319), 51 states have internal predecessors, (319), 14 states have call successors, (140), 8 states have call predecessors, (140), 16 states have return successors, (141), 12 states have call predecessors, (141), 14 states have call successors, (141) Word has length 527 [2023-12-15 21:22:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:22:12,908 INFO L225 Difference]: With dead ends: 90664 [2023-12-15 21:22:12,909 INFO L226 Difference]: Without dead ends: 74424 [2023-12-15 21:22:12,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1024 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14716 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=7922, Invalid=34308, Unknown=0, NotChecked=0, Total=42230 [2023-12-15 21:22:12,939 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 11769 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 5836 mSolverCounterSat, 1737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11780 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 7573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1737 IncrementalHoareTripleChecker+Valid, 5836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:22:12,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11780 Valid, 4334 Invalid, 7573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1737 Valid, 5836 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-15 21:22:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74424 states. [2023-12-15 21:22:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74424 to 11844. [2023-12-15 21:22:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11844 states, 10665 states have (on average 1.5049226441631505) internal successors, (16050), 10681 states have internal predecessors, (16050), 916 states have call successors, (916), 262 states have call predecessors, (916), 262 states have return successors, (916), 900 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-15 21:22:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11844 states to 11844 states and 17882 transitions. [2023-12-15 21:22:14,269 INFO L78 Accepts]: Start accepts. Automaton has 11844 states and 17882 transitions. Word has length 527 [2023-12-15 21:22:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:22:14,270 INFO L495 AbstractCegarLoop]: Abstraction has 11844 states and 17882 transitions. [2023-12-15 21:22:14,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 51 states have (on average 6.254901960784314) internal successors, (319), 51 states have internal predecessors, (319), 14 states have call successors, (140), 8 states have call predecessors, (140), 16 states have return successors, (141), 12 states have call predecessors, (141), 14 states have call successors, (141) [2023-12-15 21:22:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 11844 states and 17882 transitions. [2023-12-15 21:22:14,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-15 21:22:14,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:22:14,279 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:14,286 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 21:22:14,486 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 21:22:14,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:22:14,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:22:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash 723025155, now seen corresponding path program 1 times [2023-12-15 21:22:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:22:14,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161986241] [2023-12-15 21:22:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:22:14,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:22:14,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:22:14,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095269463] [2023-12-15 21:22:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:22:14,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:22:14,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:22:14,530 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 21:22:14,532 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 21:22:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:22:15,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 21:22:15,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:22:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-15 21:22:16,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:22:16,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:22:16,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161986241] [2023-12-15 21:22:16,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:22:16,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095269463] [2023-12-15 21:22:16,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095269463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:22:16,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:22:16,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:22:16,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200871472] [2023-12-15 21:22:16,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:22:16,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:22:16,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:22:16,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:22:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:22:16,004 INFO L87 Difference]: Start difference. First operand 11844 states and 17882 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:22:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:22:17,056 INFO L93 Difference]: Finished difference Result 28507 states and 43462 transitions. [2023-12-15 21:22:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:22:17,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 527 [2023-12-15 21:22:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:22:17,082 INFO L225 Difference]: With dead ends: 28507 [2023-12-15 21:22:17,082 INFO L226 Difference]: Without dead ends: 16874 [2023-12-15 21:22:17,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:22:17,092 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 324 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:22:17,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 1560 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:22:17,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16874 states. [2023-12-15 21:22:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16874 to 11844. [2023-12-15 21:22:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11844 states, 10665 states have (on average 1.5048288795124238) internal successors, (16049), 10681 states have internal predecessors, (16049), 916 states have call successors, (916), 262 states have call predecessors, (916), 262 states have return successors, (916), 900 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-15 21:22:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11844 states to 11844 states and 17881 transitions. [2023-12-15 21:22:17,915 INFO L78 Accepts]: Start accepts. Automaton has 11844 states and 17881 transitions. Word has length 527 [2023-12-15 21:22:17,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:22:17,916 INFO L495 AbstractCegarLoop]: Abstraction has 11844 states and 17881 transitions. [2023-12-15 21:22:17,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-15 21:22:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 11844 states and 17881 transitions. [2023-12-15 21:22:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-15 21:22:17,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:22:17,925 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:17,935 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 21:22:18,134 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 21:22:18,134 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:22:18,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:22:18,135 INFO L85 PathProgramCache]: Analyzing trace with hash -400187116, now seen corresponding path program 1 times [2023-12-15 21:22:18,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:22:18,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652167204] [2023-12-15 21:22:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:22:18,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:22:18,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:22:18,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031102169] [2023-12-15 21:22:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:22:18,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:22:18,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:22:18,176 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 21:22:18,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:22:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:22:18,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:22:18,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 21:22:18,894 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:22:18,904 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 21:22:18,909 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 21:22:18,929 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 21:22:19,103 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 21:22:19,104 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 529 with TraceHistMax 76,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 21:22:19,107 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:22:19,110 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:22:19,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:22:19 BoogieIcfgContainer [2023-12-15 21:22:19,113 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:22:19,114 INFO L158 Benchmark]: Toolchain (without parser) took 60879.11ms. Allocated memory was 191.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 153.7MB in the beginning and 651.5MB in the end (delta: -497.8MB). Peak memory consumption was 701.3MB. Max. memory is 8.0GB. [2023-12-15 21:22:19,114 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory is still 150.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:22:19,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.18ms. Allocated memory is still 191.9MB. Free memory was 153.3MB in the beginning and 114.0MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-12-15 21:22:19,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.53ms. Allocated memory is still 191.9MB. Free memory was 114.0MB in the beginning and 93.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-15 21:22:19,114 INFO L158 Benchmark]: Boogie Preprocessor took 175.96ms. Allocated memory is still 191.9MB. Free memory was 93.0MB in the beginning and 110.6MB in the end (delta: -17.6MB). Peak memory consumption was 31.1MB. Max. memory is 8.0GB. [2023-12-15 21:22:19,115 INFO L158 Benchmark]: RCFGBuilder took 1027.03ms. Allocated memory was 191.9MB in the beginning and 254.8MB in the end (delta: 62.9MB). Free memory was 110.6MB in the beginning and 152.4MB in the end (delta: -41.8MB). Peak memory consumption was 66.2MB. Max. memory is 8.0GB. [2023-12-15 21:22:19,115 INFO L158 Benchmark]: TraceAbstraction took 59061.73ms. Allocated memory was 254.8MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 151.8MB in the beginning and 651.5MB in the end (delta: -499.6MB). Peak memory consumption was 635.4MB. Max. memory is 8.0GB. [2023-12-15 21:22:19,116 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory is still 150.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 501.18ms. Allocated memory is still 191.9MB. Free memory was 153.3MB in the beginning and 114.0MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 107.53ms. Allocated memory is still 191.9MB. Free memory was 114.0MB in the beginning and 93.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 175.96ms. Allocated memory is still 191.9MB. Free memory was 93.0MB in the beginning and 110.6MB in the end (delta: -17.6MB). Peak memory consumption was 31.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1027.03ms. Allocated memory was 191.9MB in the beginning and 254.8MB in the end (delta: 62.9MB). Free memory was 110.6MB in the beginning and 152.4MB in the end (delta: -41.8MB). Peak memory consumption was 66.2MB. Max. memory is 8.0GB. * TraceAbstraction took 59061.73ms. Allocated memory was 254.8MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 151.8MB in the beginning and 651.5MB in the end (delta: -499.6MB). Peak memory consumption was 635.4MB. 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 529 with TraceHistMax 76,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, 272 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.0s, OverallIterations: 15, TraceHistogramMax: 76, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23243 SdHoareTripleChecker+Valid, 10.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23129 mSDsluCounter, 21814 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14948 mSDsCounter, 3745 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11309 IncrementalHoareTripleChecker+Invalid, 15054 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3745 mSolverCounterUnsat, 6866 mSDtfsCounter, 11309 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10274 GetRequests, 9897 SyntacticMatches, 5 SemanticMatches, 372 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18666 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16622occurred in iteration=12, InterpolantAutomatonStates: 330, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 75658 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 7889 NumberOfCodeBlocks, 7889 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 9980 ConstructedInterpolants, 0 QuantifiedInterpolants, 49252 SizeOfPredicates, 59 NumberOfNonLiveVariables, 18447 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 213471/216600 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