/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 01:39:43,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 01:39:43,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 01:39:43,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 01:39:43,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 01:39:43,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 01:39:43,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 01:39:43,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 01:39:43,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 01:39:43,291 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 01:39:43,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 01:39:43,292 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 01:39:43,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 01:39:43,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 01:39:43,293 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 01:39:43,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 01:39:43,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 01:39:43,293 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 01:39:43,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 01:39:43,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 01:39:43,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 01:39:43,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 01:39:43,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 01:39:43,295 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 01:39:43,295 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 01:39:43,295 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 01:39:43,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 01:39:43,295 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 01:39:43,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 01:39:43,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 01:39:43,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 01:39:43,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 01:39:43,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:39:43,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 01:39:43,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 01:39:43,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 01:39:43,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 01:39:43,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 01:39:43,297 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 01:39:43,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 01:39:43,298 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 01:39:43,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 01:39:43,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 01:39:43,298 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 01:39:43,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 01:39:43,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 01:39:43,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 01:39:43,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 01:39:43,471 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 01:39:43,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i [2023-12-21 01:39:44,551 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 01:39:44,750 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 01:39:44,750 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i [2023-12-21 01:39:44,757 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813f58a45/fc772e97c2584a5a94b7e267f75a9314/FLAGaa93f7b1d [2023-12-21 01:39:44,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813f58a45/fc772e97c2584a5a94b7e267f75a9314 [2023-12-21 01:39:44,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 01:39:44,769 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 01:39:44,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 01:39:44,770 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 01:39:44,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 01:39:44,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:44,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465228ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44, skipping insertion in model container [2023-12-21 01:39:44,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:44,797 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 01:39:44,889 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_variablewrapping_wrapper-a_file-12.i[916,929] [2023-12-21 01:39:44,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:39:44,942 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 01:39:44,950 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_variablewrapping_wrapper-a_file-12.i[916,929] [2023-12-21 01:39:44,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:39:44,986 INFO L206 MainTranslator]: Completed translation [2023-12-21 01:39:44,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44 WrapperNode [2023-12-21 01:39:44,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 01:39:44,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 01:39:44,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 01:39:44,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 01:39:44,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,037 INFO L138 Inliner]: procedures = 26, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 447 [2023-12-21 01:39:45,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 01:39:45,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 01:39:45,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 01:39:45,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 01:39:45,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,074 INFO L175 MemorySlicer]: Split 123 memory accesses to 4 slices as follows [2, 38, 12, 71]. 58 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 2, 4]. The 14 writes are split as follows [0, 8, 2, 4]. [2023-12-21 01:39:45,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,075 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 01:39:45,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 01:39:45,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 01:39:45,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 01:39:45,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (1/1) ... [2023-12-21 01:39:45,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:39:45,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:45,140 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) [2023-12-21 01:39:45,148 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 [2023-12-21 01:39:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 01:39:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 01:39:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 01:39:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-21 01:39:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-21 01:39:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 01:39:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 01:39:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-21 01:39:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-21 01:39:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 01:39:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 01:39:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 01:39:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 01:39:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 01:39:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 01:39:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 01:39:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 01:39:45,305 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 01:39:45,306 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 01:39:45,673 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 01:39:45,693 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 01:39:45,693 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 01:39:45,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:39:45 BoogieIcfgContainer [2023-12-21 01:39:45,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 01:39:45,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 01:39:45,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 01:39:45,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 01:39:45,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:39:44" (1/3) ... [2023-12-21 01:39:45,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9cf86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:39:45, skipping insertion in model container [2023-12-21 01:39:45,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:39:44" (2/3) ... [2023-12-21 01:39:45,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9cf86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:39:45, skipping insertion in model container [2023-12-21 01:39:45,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:39:45" (3/3) ... [2023-12-21 01:39:45,699 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-12.i [2023-12-21 01:39:45,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 01:39:45,712 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 01:39:45,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 01:39:45,749 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;@5b9ebeb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 01:39:45,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 01:39:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:39:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 01:39:45,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:45,763 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:45,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:45,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:45,767 INFO L85 PathProgramCache]: Analyzing trace with hash 403899770, now seen corresponding path program 1 times [2023-12-21 01:39:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:45,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828273086] [2023-12-21 01:39:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:45,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:45,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828273086] [2023-12-21 01:39:45,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 01:39:45,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872144562] [2023-12-21 01:39:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:45,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:45,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:45,960 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) [2023-12-21 01:39:45,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 01:39:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:46,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 01:39:46,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-21 01:39:46,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:39:46,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872144562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:39:46,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:39:46,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 01:39:46,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594441017] [2023-12-21 01:39:46,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:39:46,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 01:39:46,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 01:39:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:39:46,177 INFO L87 Difference]: Start difference. First operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-21 01:39:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:46,204 INFO L93 Difference]: Finished difference Result 173 states and 274 transitions. [2023-12-21 01:39:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 01:39:46,205 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2023-12-21 01:39:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:46,210 INFO L225 Difference]: With dead ends: 173 [2023-12-21 01:39:46,210 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 01:39:46,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:39:46,215 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:46,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:39:46,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 01:39:46,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-21 01:39:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:39:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2023-12-21 01:39:46,244 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 112 [2023-12-21 01:39:46,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:46,244 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2023-12-21 01:39:46,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-21 01:39:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2023-12-21 01:39:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 01:39:46,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:46,250 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:46,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 01:39:46,460 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 [2023-12-21 01:39:46,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:46,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 749419866, now seen corresponding path program 1 times [2023-12-21 01:39:46,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:46,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265002453] [2023-12-21 01:39:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:46,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:46,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:46,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12604828] [2023-12-21 01:39:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:46,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:46,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:46,541 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) [2023-12-21 01:39:46,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 01:39:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:46,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 01:39:46,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:39:46,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:39:46,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:46,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265002453] [2023-12-21 01:39:46,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:46,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12604828] [2023-12-21 01:39:46,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12604828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:39:46,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:39:46,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:39:46,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992162048] [2023-12-21 01:39:46,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:39:46,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:39:46,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:46,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:39:46,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:39:46,733 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:46,785 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2023-12-21 01:39:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:39:46,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 112 [2023-12-21 01:39:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:46,789 INFO L225 Difference]: With dead ends: 165 [2023-12-21 01:39:46,789 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 01:39:46,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:39:46,793 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 45 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:46,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 286 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:39:46,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 01:39:46,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-21 01:39:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:39:46,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2023-12-21 01:39:46,803 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 112 [2023-12-21 01:39:46,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:46,805 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2023-12-21 01:39:46,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2023-12-21 01:39:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 01:39:46,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:46,806 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:46,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 01:39:47,015 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 [2023-12-21 01:39:47,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:47,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1850359588, now seen corresponding path program 1 times [2023-12-21 01:39:47,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:47,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323749540] [2023-12-21 01:39:47,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:47,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:47,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:47,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359863509] [2023-12-21 01:39:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:47,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:47,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:47,074 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) [2023-12-21 01:39:47,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 01:39:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:47,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 01:39:47,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:39:47,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:39:47,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:47,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323749540] [2023-12-21 01:39:47,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:47,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359863509] [2023-12-21 01:39:47,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359863509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:39:47,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:39:47,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:39:47,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979373769] [2023-12-21 01:39:47,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:39:47,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:39:47,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:39:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:39:47,240 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:47,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:47,293 INFO L93 Difference]: Finished difference Result 177 states and 250 transitions. [2023-12-21 01:39:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:39:47,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 114 [2023-12-21 01:39:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:47,298 INFO L225 Difference]: With dead ends: 177 [2023-12-21 01:39:47,298 INFO L226 Difference]: Without dead ends: 95 [2023-12-21 01:39:47,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:39:47,301 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 65 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:47,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 410 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:39:47,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-21 01:39:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2023-12-21 01:39:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:39:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2023-12-21 01:39:47,319 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 114 [2023-12-21 01:39:47,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:47,320 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2023-12-21 01:39:47,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:47,320 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2023-12-21 01:39:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 01:39:47,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:47,323 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:47,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 01:39:47,529 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 [2023-12-21 01:39:47,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:47,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash -993604616, now seen corresponding path program 1 times [2023-12-21 01:39:47,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:47,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895413735] [2023-12-21 01:39:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:47,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:47,562 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:47,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375579163] [2023-12-21 01:39:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:47,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:47,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:47,567 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) [2023-12-21 01:39:47,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 01:39:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:47,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 01:39:47,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:47,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-21 01:39:47,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:47,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2023-12-21 01:39:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:39:47,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:39:47,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895413735] [2023-12-21 01:39:47,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375579163] [2023-12-21 01:39:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375579163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:39:47,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:39:47,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:39:47,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695067028] [2023-12-21 01:39:47,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:39:47,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:39:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:47,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:39:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:39:47,810 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:47,884 INFO L93 Difference]: Finished difference Result 126 states and 170 transitions. [2023-12-21 01:39:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:39:47,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 116 [2023-12-21 01:39:47,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:47,888 INFO L225 Difference]: With dead ends: 126 [2023-12-21 01:39:47,888 INFO L226 Difference]: Without dead ends: 124 [2023-12-21 01:39:47,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:39:47,889 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 58 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:47,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 514 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:39:47,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-21 01:39:47,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 110. [2023-12-21 01:39:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 92 states have internal predecessors, (119), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:39:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 151 transitions. [2023-12-21 01:39:47,904 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 151 transitions. Word has length 116 [2023-12-21 01:39:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:47,905 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 151 transitions. [2023-12-21 01:39:47,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 151 transitions. [2023-12-21 01:39:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 01:39:47,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:47,906 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:47,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 01:39:48,113 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 [2023-12-21 01:39:48,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:48,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash 604343881, now seen corresponding path program 1 times [2023-12-21 01:39:48,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:48,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077644020] [2023-12-21 01:39:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:48,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:48,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:48,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94160413] [2023-12-21 01:39:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:48,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:48,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:48,167 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) [2023-12-21 01:39:48,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 01:39:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:48,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-21 01:39:48,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:48,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-21 01:39:48,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:48,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-12-21 01:39:49,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:49,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2023-12-21 01:39:49,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:49,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 34 [2023-12-21 01:39:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 01:39:49,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:39:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-21 01:39:49,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:49,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077644020] [2023-12-21 01:39:49,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:49,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94160413] [2023-12-21 01:39:49,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94160413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:39:49,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:39:49,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2023-12-21 01:39:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627031029] [2023-12-21 01:39:49,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:39:49,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 01:39:49,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:49,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 01:39:49,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1675, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 01:39:49,967 INFO L87 Difference]: Start difference. First operand 110 states and 151 transitions. Second operand has 46 states, 38 states have (on average 2.710526315789474) internal successors, (103), 40 states have internal predecessors, (103), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-21 01:39:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:51,100 INFO L93 Difference]: Finished difference Result 182 states and 232 transitions. [2023-12-21 01:39:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 01:39:51,100 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 38 states have (on average 2.710526315789474) internal successors, (103), 40 states have internal predecessors, (103), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) Word has length 117 [2023-12-21 01:39:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:51,101 INFO L225 Difference]: With dead ends: 182 [2023-12-21 01:39:51,101 INFO L226 Difference]: Without dead ends: 180 [2023-12-21 01:39:51,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1001, Invalid=3691, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 01:39:51,103 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 798 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:51,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1604 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:39:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-21 01:39:51,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 126. [2023-12-21 01:39:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:39:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 163 transitions. [2023-12-21 01:39:51,111 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 163 transitions. Word has length 117 [2023-12-21 01:39:51,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:51,111 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 163 transitions. [2023-12-21 01:39:51,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 38 states have (on average 2.710526315789474) internal successors, (103), 40 states have internal predecessors, (103), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-21 01:39:51,112 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 163 transitions. [2023-12-21 01:39:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 01:39:51,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:51,113 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:51,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 01:39:51,320 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 [2023-12-21 01:39:51,321 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:51,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:51,321 INFO L85 PathProgramCache]: Analyzing trace with hash -538292957, now seen corresponding path program 1 times [2023-12-21 01:39:51,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:51,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741871738] [2023-12-21 01:39:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:51,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:51,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:51,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958842334] [2023-12-21 01:39:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:51,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:51,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:51,373 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) [2023-12-21 01:39:51,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 01:39:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:51,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-21 01:39:51,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:51,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-21 01:39:51,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:51,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-12-21 01:39:52,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:52,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2023-12-21 01:39:52,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:52,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 34 [2023-12-21 01:39:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 01:39:52,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:39:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-21 01:39:53,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:53,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741871738] [2023-12-21 01:39:53,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:53,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958842334] [2023-12-21 01:39:53,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958842334] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:39:53,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:39:53,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-21 01:39:53,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504935637] [2023-12-21 01:39:53,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:39:53,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 01:39:53,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:53,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 01:39:53,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=1856, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 01:39:53,248 INFO L87 Difference]: Start difference. First operand 126 states and 163 transitions. Second operand has 48 states, 40 states have (on average 2.625) internal successors, (105), 42 states have internal predecessors, (105), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-21 01:39:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:54,858 INFO L93 Difference]: Finished difference Result 202 states and 253 transitions. [2023-12-21 01:39:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-21 01:39:54,859 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 40 states have (on average 2.625) internal successors, (105), 42 states have internal predecessors, (105), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) Word has length 118 [2023-12-21 01:39:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:54,860 INFO L225 Difference]: With dead ends: 202 [2023-12-21 01:39:54,860 INFO L226 Difference]: Without dead ends: 200 [2023-12-21 01:39:54,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1343, Invalid=5797, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 01:39:54,863 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 547 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:54,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1539 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 01:39:54,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-21 01:39:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 128. [2023-12-21 01:39:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 106 states have (on average 1.2641509433962264) internal successors, (134), 106 states have internal predecessors, (134), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:39:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 166 transitions. [2023-12-21 01:39:54,885 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 166 transitions. Word has length 118 [2023-12-21 01:39:54,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:54,885 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 166 transitions. [2023-12-21 01:39:54,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 40 states have (on average 2.625) internal successors, (105), 42 states have internal predecessors, (105), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-21 01:39:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 166 transitions. [2023-12-21 01:39:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 01:39:54,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:54,887 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:54,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 01:39:55,097 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 [2023-12-21 01:39:55,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:55,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1566305001, now seen corresponding path program 1 times [2023-12-21 01:39:55,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:55,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975090705] [2023-12-21 01:39:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:55,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:55,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:55,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513025180] [2023-12-21 01:39:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:55,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:55,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:55,156 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) [2023-12-21 01:39:55,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 01:39:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:55,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 01:39:55,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:55,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:55,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2023-12-21 01:39:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:39:55,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:39:55,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975090705] [2023-12-21 01:39:55,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513025180] [2023-12-21 01:39:55,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513025180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:39:55,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:39:55,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:39:55,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136727656] [2023-12-21 01:39:55,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:39:55,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:39:55,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:55,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:39:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:39:55,320 INFO L87 Difference]: Start difference. First operand 128 states and 166 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:55,375 INFO L93 Difference]: Finished difference Result 348 states and 443 transitions. [2023-12-21 01:39:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:39:55,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2023-12-21 01:39:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:55,376 INFO L225 Difference]: With dead ends: 348 [2023-12-21 01:39:55,376 INFO L226 Difference]: Without dead ends: 221 [2023-12-21 01:39:55,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:39:55,377 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 83 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:55,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 474 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:39:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-21 01:39:55,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 204. [2023-12-21 01:39:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 171 states have (on average 1.2280701754385965) internal successors, (210), 172 states have internal predecessors, (210), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-21 01:39:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 254 transitions. [2023-12-21 01:39:55,388 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 254 transitions. Word has length 119 [2023-12-21 01:39:55,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:55,388 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 254 transitions. [2023-12-21 01:39:55,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 254 transitions. [2023-12-21 01:39:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 01:39:55,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:55,389 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:55,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 01:39:55,596 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 [2023-12-21 01:39:55,597 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:55,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash -445192402, now seen corresponding path program 1 times [2023-12-21 01:39:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571567170] [2023-12-21 01:39:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:55,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:55,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542078174] [2023-12-21 01:39:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:55,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:55,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:55,627 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) [2023-12-21 01:39:55,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 01:39:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:55,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 01:39:55,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:55,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2023-12-21 01:39:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-21 01:39:55,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:39:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-21 01:39:56,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:56,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571567170] [2023-12-21 01:39:56,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:56,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542078174] [2023-12-21 01:39:56,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542078174] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:39:56,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:39:56,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-21 01:39:56,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407328510] [2023-12-21 01:39:56,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:39:56,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:39:56,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:56,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:39:56,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:39:56,042 INFO L87 Difference]: Start difference. First operand 204 states and 254 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-21 01:39:56,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:56,288 INFO L93 Difference]: Finished difference Result 417 states and 516 transitions. [2023-12-21 01:39:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 01:39:56,289 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) Word has length 119 [2023-12-21 01:39:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:56,291 INFO L225 Difference]: With dead ends: 417 [2023-12-21 01:39:56,292 INFO L226 Difference]: Without dead ends: 214 [2023-12-21 01:39:56,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:39:56,292 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 250 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:56,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 343 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:39:56,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-21 01:39:56,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 153. [2023-12-21 01:39:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 130 states have internal predecessors, (160), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:39:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 192 transitions. [2023-12-21 01:39:56,299 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 192 transitions. Word has length 119 [2023-12-21 01:39:56,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:56,299 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 192 transitions. [2023-12-21 01:39:56,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-21 01:39:56,299 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 192 transitions. [2023-12-21 01:39:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 01:39:56,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:56,300 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:56,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 01:39:56,511 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 [2023-12-21 01:39:56,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:56,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:56,512 INFO L85 PathProgramCache]: Analyzing trace with hash -437810584, now seen corresponding path program 1 times [2023-12-21 01:39:56,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:56,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235199406] [2023-12-21 01:39:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:56,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:56,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:56,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338221326] [2023-12-21 01:39:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:56,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:56,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:56,579 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) [2023-12-21 01:39:56,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 01:39:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:56,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 01:39:56,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:57,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:57,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2023-12-21 01:39:57,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:57,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 26 [2023-12-21 01:39:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-21 01:39:57,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:39:57,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-21 01:39:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-21 01:39:57,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:57,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235199406] [2023-12-21 01:39:57,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:57,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338221326] [2023-12-21 01:39:57,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338221326] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:39:57,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:39:57,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-12-21 01:39:57,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078323562] [2023-12-21 01:39:57,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:39:57,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 01:39:57,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:57,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 01:39:57,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:39:57,250 INFO L87 Difference]: Start difference. First operand 153 states and 192 transitions. Second operand has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) [2023-12-21 01:39:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:57,499 INFO L93 Difference]: Finished difference Result 354 states and 442 transitions. [2023-12-21 01:39:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 01:39:57,500 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) Word has length 120 [2023-12-21 01:39:57,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:57,501 INFO L225 Difference]: With dead ends: 354 [2023-12-21 01:39:57,501 INFO L226 Difference]: Without dead ends: 202 [2023-12-21 01:39:57,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2023-12-21 01:39:57,502 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 178 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:57,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 407 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:39:57,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-21 01:39:57,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 153. [2023-12-21 01:39:57,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 130 states have (on average 1.2230769230769232) internal successors, (159), 130 states have internal predecessors, (159), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:39:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 191 transitions. [2023-12-21 01:39:57,508 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 191 transitions. Word has length 120 [2023-12-21 01:39:57,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:57,508 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 191 transitions. [2023-12-21 01:39:57,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) [2023-12-21 01:39:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 191 transitions. [2023-12-21 01:39:57,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 01:39:57,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:57,509 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:57,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 01:39:57,716 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 [2023-12-21 01:39:57,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:57,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:57,716 INFO L85 PathProgramCache]: Analyzing trace with hash 787874196, now seen corresponding path program 1 times [2023-12-21 01:39:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:57,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170682484] [2023-12-21 01:39:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:57,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:57,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:57,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014705847] [2023-12-21 01:39:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:57,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:57,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:57,734 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) [2023-12-21 01:39:57,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 01:39:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:57,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 01:39:57,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:57,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:57,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 26 [2023-12-21 01:39:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:39:58,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:39:58,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170682484] [2023-12-21 01:39:58,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014705847] [2023-12-21 01:39:58,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014705847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:39:58,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:39:58,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:39:58,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677229786] [2023-12-21 01:39:58,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:39:58,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:39:58,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:58,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:39:58,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:39:58,010 INFO L87 Difference]: Start difference. First operand 153 states and 191 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:58,199 INFO L93 Difference]: Finished difference Result 395 states and 484 transitions. [2023-12-21 01:39:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:39:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-12-21 01:39:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:58,201 INFO L225 Difference]: With dead ends: 395 [2023-12-21 01:39:58,201 INFO L226 Difference]: Without dead ends: 243 [2023-12-21 01:39:58,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:39:58,201 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 75 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:58,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 504 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:39:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-21 01:39:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2023-12-21 01:39:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 200 states have (on average 1.185) internal successors, (237), 201 states have internal predecessors, (237), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 01:39:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 289 transitions. [2023-12-21 01:39:58,213 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 289 transitions. Word has length 121 [2023-12-21 01:39:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:58,214 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 289 transitions. [2023-12-21 01:39:58,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 289 transitions. [2023-12-21 01:39:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 01:39:58,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:58,215 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:58,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 01:39:58,421 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 [2023-12-21 01:39:58,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:58,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:58,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1962360430, now seen corresponding path program 1 times [2023-12-21 01:39:58,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:58,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877000792] [2023-12-21 01:39:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:58,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:58,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:58,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296550533] [2023-12-21 01:39:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:58,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:58,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:58,449 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) [2023-12-21 01:39:58,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 01:39:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:58,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 01:39:58,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:58,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:58,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 28 [2023-12-21 01:39:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:39:58,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:39:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877000792] [2023-12-21 01:39:58,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296550533] [2023-12-21 01:39:58,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296550533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:39:58,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:39:58,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:39:58,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182387555] [2023-12-21 01:39:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:39:58,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:39:58,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:39:58,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:39:58,689 INFO L87 Difference]: Start difference. First operand 239 states and 289 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:39:58,839 INFO L93 Difference]: Finished difference Result 476 states and 572 transitions. [2023-12-21 01:39:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:39:58,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-12-21 01:39:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:39:58,841 INFO L225 Difference]: With dead ends: 476 [2023-12-21 01:39:58,841 INFO L226 Difference]: Without dead ends: 238 [2023-12-21 01:39:58,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:39:58,842 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 57 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:39:58,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 331 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:39:58,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-21 01:39:58,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 185. [2023-12-21 01:39:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.204968944099379) internal successors, (194), 161 states have internal predecessors, (194), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:39:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2023-12-21 01:39:58,853 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 122 [2023-12-21 01:39:58,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:39:58,853 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2023-12-21 01:39:58,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:39:58,853 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2023-12-21 01:39:58,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 01:39:58,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:39:58,854 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:39:58,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 01:39:59,061 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 [2023-12-21 01:39:59,062 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:39:59,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:39:59,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2065861567, now seen corresponding path program 1 times [2023-12-21 01:39:59,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:39:59,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598544355] [2023-12-21 01:39:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:39:59,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:39:59,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229809647] [2023-12-21 01:39:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:39:59,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:39:59,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:39:59,102 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) [2023-12-21 01:39:59,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 01:39:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:39:59,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 01:39:59,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:39:59,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:39:59,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 28 [2023-12-21 01:39:59,329 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:39:59,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:39:59,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:39:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598544355] [2023-12-21 01:39:59,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:39:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229809647] [2023-12-21 01:39:59,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229809647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:39:59,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:39:59,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:39:59,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351151205] [2023-12-21 01:39:59,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:39:59,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:39:59,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:39:59,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:39:59,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:39:59,331 INFO L87 Difference]: Start difference. First operand 185 states and 226 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:02,464 INFO L93 Difference]: Finished difference Result 426 states and 513 transitions. [2023-12-21 01:40:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:40:02,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2023-12-21 01:40:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:02,469 INFO L225 Difference]: With dead ends: 426 [2023-12-21 01:40:02,469 INFO L226 Difference]: Without dead ends: 242 [2023-12-21 01:40:02,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:40:02,470 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 80 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:02,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 495 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-21 01:40:02,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-21 01:40:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 185. [2023-12-21 01:40:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.1987577639751552) internal successors, (193), 161 states have internal predecessors, (193), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 225 transitions. [2023-12-21 01:40:02,496 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 225 transitions. Word has length 123 [2023-12-21 01:40:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:02,497 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 225 transitions. [2023-12-21 01:40:02,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 225 transitions. [2023-12-21 01:40:02,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 01:40:02,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:02,499 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:02,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:02,716 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 [2023-12-21 01:40:02,717 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:02,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:02,717 INFO L85 PathProgramCache]: Analyzing trace with hash 594886655, now seen corresponding path program 1 times [2023-12-21 01:40:02,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:02,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630151942] [2023-12-21 01:40:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:02,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:02,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:02,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299275742] [2023-12-21 01:40:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:02,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:02,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:02,733 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) [2023-12-21 01:40:02,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 01:40:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:02,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 01:40:02,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:02,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:02,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 28 [2023-12-21 01:40:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:02,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:02,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630151942] [2023-12-21 01:40:02,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299275742] [2023-12-21 01:40:02,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299275742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:02,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:40:02,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872009170] [2023-12-21 01:40:02,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:02,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:40:02,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:02,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:40:02,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:40:02,977 INFO L87 Difference]: Start difference. First operand 185 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:04,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:04,422 INFO L93 Difference]: Finished difference Result 422 states and 506 transitions. [2023-12-21 01:40:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:40:04,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2023-12-21 01:40:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:04,429 INFO L225 Difference]: With dead ends: 422 [2023-12-21 01:40:04,429 INFO L226 Difference]: Without dead ends: 238 [2023-12-21 01:40:04,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:40:04,430 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 69 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:04,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 451 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 01:40:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-21 01:40:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 185. [2023-12-21 01:40:04,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.1925465838509317) internal successors, (192), 161 states have internal predecessors, (192), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 224 transitions. [2023-12-21 01:40:04,445 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 224 transitions. Word has length 123 [2023-12-21 01:40:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:04,445 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 224 transitions. [2023-12-21 01:40:04,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 224 transitions. [2023-12-21 01:40:04,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:04,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:04,447 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:04,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-21 01:40:04,653 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 [2023-12-21 01:40:04,654 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:04,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:04,654 INFO L85 PathProgramCache]: Analyzing trace with hash -633145617, now seen corresponding path program 1 times [2023-12-21 01:40:04,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:04,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649313309] [2023-12-21 01:40:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:04,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:04,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:04,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320676683] [2023-12-21 01:40:04,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:04,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:04,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:04,693 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) [2023-12-21 01:40:04,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 01:40:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:04,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 01:40:04,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:04,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:04,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-12-21 01:40:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:04,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:04,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:04,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649313309] [2023-12-21 01:40:04,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:04,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320676683] [2023-12-21 01:40:04,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320676683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:04,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:04,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:40:04,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268598470] [2023-12-21 01:40:04,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:04,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:40:04,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:04,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:40:04,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:40:04,875 INFO L87 Difference]: Start difference. First operand 185 states and 224 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:05,094 INFO L93 Difference]: Finished difference Result 510 states and 617 transitions. [2023-12-21 01:40:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:40:05,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-21 01:40:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:05,096 INFO L225 Difference]: With dead ends: 510 [2023-12-21 01:40:05,096 INFO L226 Difference]: Without dead ends: 326 [2023-12-21 01:40:05,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:40:05,100 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 109 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:05,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 403 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:40:05,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-12-21 01:40:05,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 187. [2023-12-21 01:40:05,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 163 states have (on average 1.196319018404908) internal successors, (195), 163 states have internal predecessors, (195), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2023-12-21 01:40:05,116 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 124 [2023-12-21 01:40:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:05,116 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2023-12-21 01:40:05,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2023-12-21 01:40:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:05,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:05,117 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:05,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:05,321 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 [2023-12-21 01:40:05,322 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:05,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:05,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1856383345, now seen corresponding path program 1 times [2023-12-21 01:40:05,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:05,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005337075] [2023-12-21 01:40:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:05,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:05,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:05,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786005753] [2023-12-21 01:40:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:05,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:05,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:05,345 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) [2023-12-21 01:40:05,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 01:40:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:05,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 01:40:05,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:05,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-21 01:40:05,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-21 01:40:05,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:05,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2023-12-21 01:40:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 231 proven. 12 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-12-21 01:40:05,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:40:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-21 01:40:05,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005337075] [2023-12-21 01:40:05,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786005753] [2023-12-21 01:40:05,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786005753] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:40:05,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:40:05,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-12-21 01:40:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992581989] [2023-12-21 01:40:05,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:40:05,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 01:40:05,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:05,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 01:40:05,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-12-21 01:40:05,934 INFO L87 Difference]: Start difference. First operand 187 states and 227 transitions. Second operand has 21 states, 17 states have (on average 4.235294117647059) internal successors, (72), 21 states have internal predecessors, (72), 8 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 4 states have call predecessors, (21), 8 states have call successors, (21) [2023-12-21 01:40:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:06,390 INFO L93 Difference]: Finished difference Result 390 states and 469 transitions. [2023-12-21 01:40:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 01:40:06,391 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 4.235294117647059) internal successors, (72), 21 states have internal predecessors, (72), 8 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 4 states have call predecessors, (21), 8 states have call successors, (21) Word has length 124 [2023-12-21 01:40:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:06,392 INFO L225 Difference]: With dead ends: 390 [2023-12-21 01:40:06,392 INFO L226 Difference]: Without dead ends: 204 [2023-12-21 01:40:06,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 225 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2023-12-21 01:40:06,393 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 208 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:06,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 462 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:40:06,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-21 01:40:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 194. [2023-12-21 01:40:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 168 states have (on average 1.1845238095238095) internal successors, (199), 168 states have internal predecessors, (199), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 231 transitions. [2023-12-21 01:40:06,405 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 231 transitions. Word has length 124 [2023-12-21 01:40:06,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:06,405 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 231 transitions. [2023-12-21 01:40:06,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 4.235294117647059) internal successors, (72), 21 states have internal predecessors, (72), 8 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 4 states have call predecessors, (21), 8 states have call successors, (21) [2023-12-21 01:40:06,405 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 231 transitions. [2023-12-21 01:40:06,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:06,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:06,406 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:06,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:06,606 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 [2023-12-21 01:40:06,607 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:06,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash 214101926, now seen corresponding path program 1 times [2023-12-21 01:40:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:06,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874136933] [2023-12-21 01:40:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:06,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:06,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:06,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610945219] [2023-12-21 01:40:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:06,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:06,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:06,628 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:06,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 01:40:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:06,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 01:40:06,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:06,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:06,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-12-21 01:40:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:06,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:06,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:06,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874136933] [2023-12-21 01:40:06,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:06,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610945219] [2023-12-21 01:40:06,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610945219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:06,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:06,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:40:06,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319147784] [2023-12-21 01:40:06,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:06,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:40:06,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:06,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:40:06,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:40:06,802 INFO L87 Difference]: Start difference. First operand 194 states and 231 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:06,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:06,958 INFO L93 Difference]: Finished difference Result 524 states and 625 transitions. [2023-12-21 01:40:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:40:06,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-21 01:40:06,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:06,959 INFO L225 Difference]: With dead ends: 524 [2023-12-21 01:40:06,959 INFO L226 Difference]: Without dead ends: 331 [2023-12-21 01:40:06,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:40:06,960 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 101 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:06,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 403 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:40:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-21 01:40:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 195. [2023-12-21 01:40:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 169 states have (on average 1.183431952662722) internal successors, (200), 169 states have internal predecessors, (200), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 232 transitions. [2023-12-21 01:40:06,973 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 232 transitions. Word has length 124 [2023-12-21 01:40:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:06,973 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 232 transitions. [2023-12-21 01:40:06,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:06,974 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 232 transitions. [2023-12-21 01:40:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:06,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:06,974 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:06,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:07,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 01:40:07,181 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:07,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:07,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1591336408, now seen corresponding path program 1 times [2023-12-21 01:40:07,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:07,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610215815] [2023-12-21 01:40:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:07,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:07,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:07,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604017955] [2023-12-21 01:40:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:07,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:07,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:07,198 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:07,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 01:40:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:07,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 01:40:07,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:07,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 01:40:07,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:07,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2023-12-21 01:40:07,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:07,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-12-21 01:40:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:07,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:07,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:07,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610215815] [2023-12-21 01:40:07,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:07,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604017955] [2023-12-21 01:40:07,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604017955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:07,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:07,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:40:07,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918181892] [2023-12-21 01:40:07,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:07,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:40:07,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:07,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:40:07,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:40:07,507 INFO L87 Difference]: Start difference. First operand 195 states and 232 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:07,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:07,762 INFO L93 Difference]: Finished difference Result 580 states and 694 transitions. [2023-12-21 01:40:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:40:07,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-21 01:40:07,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:07,764 INFO L225 Difference]: With dead ends: 580 [2023-12-21 01:40:07,764 INFO L226 Difference]: Without dead ends: 386 [2023-12-21 01:40:07,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:40:07,765 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 195 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:07,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 375 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:40:07,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-21 01:40:07,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 228. [2023-12-21 01:40:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 202 states have (on average 1.183168316831683) internal successors, (239), 202 states have internal predecessors, (239), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 271 transitions. [2023-12-21 01:40:07,777 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 271 transitions. Word has length 124 [2023-12-21 01:40:07,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:07,778 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 271 transitions. [2023-12-21 01:40:07,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 271 transitions. [2023-12-21 01:40:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:07,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:07,778 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:07,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:07,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 01:40:07,985 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:07,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:07,986 INFO L85 PathProgramCache]: Analyzing trace with hash -890271830, now seen corresponding path program 1 times [2023-12-21 01:40:07,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:07,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679687301] [2023-12-21 01:40:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:07,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:08,002 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:08,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015094593] [2023-12-21 01:40:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:08,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:08,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:08,003 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:08,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 01:40:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:08,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 01:40:08,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:08,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:08,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-12-21 01:40:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:08,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:08,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:08,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679687301] [2023-12-21 01:40:08,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:08,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015094593] [2023-12-21 01:40:08,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015094593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:08,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:08,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:40:08,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547479104] [2023-12-21 01:40:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:08,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:40:08,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:40:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:40:08,197 INFO L87 Difference]: Start difference. First operand 228 states and 271 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:08,349 INFO L93 Difference]: Finished difference Result 619 states and 731 transitions. [2023-12-21 01:40:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:40:08,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-21 01:40:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:08,352 INFO L225 Difference]: With dead ends: 619 [2023-12-21 01:40:08,352 INFO L226 Difference]: Without dead ends: 392 [2023-12-21 01:40:08,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:40:08,354 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 178 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:08,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 396 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:40:08,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-12-21 01:40:08,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 234. [2023-12-21 01:40:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 208 states have internal predecessors, (248), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2023-12-21 01:40:08,367 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 124 [2023-12-21 01:40:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:08,368 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2023-12-21 01:40:08,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2023-12-21 01:40:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:08,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:08,369 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:08,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:08,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 01:40:08,575 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:08,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:08,576 INFO L85 PathProgramCache]: Analyzing trace with hash -210213460, now seen corresponding path program 1 times [2023-12-21 01:40:08,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:08,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340795863] [2023-12-21 01:40:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:08,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:08,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:08,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487784933] [2023-12-21 01:40:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:08,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:08,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:08,597 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:08,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 01:40:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:08,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 01:40:08,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:08,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:08,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-12-21 01:40:08,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:08,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 21 [2023-12-21 01:40:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:09,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:09,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:09,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340795863] [2023-12-21 01:40:09,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:09,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487784933] [2023-12-21 01:40:09,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487784933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:09,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:09,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 01:40:09,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699129866] [2023-12-21 01:40:09,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:09,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 01:40:09,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:09,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 01:40:09,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:40:09,047 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:09,935 INFO L93 Difference]: Finished difference Result 695 states and 826 transitions. [2023-12-21 01:40:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 01:40:09,936 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-21 01:40:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:09,937 INFO L225 Difference]: With dead ends: 695 [2023-12-21 01:40:09,937 INFO L226 Difference]: Without dead ends: 462 [2023-12-21 01:40:09,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=869, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 01:40:09,938 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 376 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:09,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1333 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:40:09,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-21 01:40:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 285. [2023-12-21 01:40:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 259 states have (on average 1.223938223938224) internal successors, (317), 259 states have internal predecessors, (317), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 349 transitions. [2023-12-21 01:40:09,952 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 349 transitions. Word has length 124 [2023-12-21 01:40:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:09,952 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 349 transitions. [2023-12-21 01:40:09,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:09,952 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 349 transitions. [2023-12-21 01:40:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:09,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:09,953 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:09,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-21 01:40:10,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:10,159 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:10,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:10,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1460146867, now seen corresponding path program 1 times [2023-12-21 01:40:10,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:10,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149727047] [2023-12-21 01:40:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:10,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:10,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:10,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234802387] [2023-12-21 01:40:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:10,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:10,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:10,190 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:10,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 01:40:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:10,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 01:40:10,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:10,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:10,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-12-21 01:40:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:10,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149727047] [2023-12-21 01:40:10,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234802387] [2023-12-21 01:40:10,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234802387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:10,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:10,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:40:10,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051533669] [2023-12-21 01:40:10,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:10,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:40:10,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:10,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:40:10,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:40:10,363 INFO L87 Difference]: Start difference. First operand 285 states and 349 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:10,496 INFO L93 Difference]: Finished difference Result 751 states and 899 transitions. [2023-12-21 01:40:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:40:10,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-21 01:40:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:10,501 INFO L225 Difference]: With dead ends: 751 [2023-12-21 01:40:10,502 INFO L226 Difference]: Without dead ends: 467 [2023-12-21 01:40:10,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:40:10,503 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 145 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:10,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 410 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:40:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-21 01:40:10,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 288. [2023-12-21 01:40:10,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 262 states have (on average 1.2213740458015268) internal successors, (320), 262 states have internal predecessors, (320), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 352 transitions. [2023-12-21 01:40:10,548 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 352 transitions. Word has length 124 [2023-12-21 01:40:10,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:10,549 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 352 transitions. [2023-12-21 01:40:10,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:10,549 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 352 transitions. [2023-12-21 01:40:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:10,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:10,550 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:10,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:10,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:10,750 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:10,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:10,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2140205237, now seen corresponding path program 1 times [2023-12-21 01:40:10,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:10,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36500411] [2023-12-21 01:40:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:10,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:10,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:10,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002328008] [2023-12-21 01:40:10,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:10,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:10,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:10,794 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:10,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 01:40:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:10,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 01:40:10,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:11,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:11,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2023-12-21 01:40:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:11,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:11,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:11,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36500411] [2023-12-21 01:40:11,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:11,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002328008] [2023-12-21 01:40:11,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002328008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:11,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:11,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:40:11,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780477794] [2023-12-21 01:40:11,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:11,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:40:11,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:40:11,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:40:11,140 INFO L87 Difference]: Start difference. First operand 288 states and 352 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:11,376 INFO L93 Difference]: Finished difference Result 685 states and 822 transitions. [2023-12-21 01:40:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:40:11,376 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-21 01:40:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:11,378 INFO L225 Difference]: With dead ends: 685 [2023-12-21 01:40:11,379 INFO L226 Difference]: Without dead ends: 398 [2023-12-21 01:40:11,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:40:11,380 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 176 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:11,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 300 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:40:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-12-21 01:40:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 291. [2023-12-21 01:40:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 265 states have (on average 1.2188679245283018) internal successors, (323), 265 states have internal predecessors, (323), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 355 transitions. [2023-12-21 01:40:11,399 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 355 transitions. Word has length 124 [2023-12-21 01:40:11,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:11,400 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 355 transitions. [2023-12-21 01:40:11,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 355 transitions. [2023-12-21 01:40:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:11,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:11,401 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:11,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:11,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:11,607 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:11,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:11,608 INFO L85 PathProgramCache]: Analyzing trace with hash -773694227, now seen corresponding path program 1 times [2023-12-21 01:40:11,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:11,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264577289] [2023-12-21 01:40:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:11,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:11,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:11,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327387703] [2023-12-21 01:40:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:11,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:11,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:11,624 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:11,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 01:40:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:11,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 01:40:11,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:11,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-21 01:40:12,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:12,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2023-12-21 01:40:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 149 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-21 01:40:12,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:40:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-21 01:40:12,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264577289] [2023-12-21 01:40:12,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327387703] [2023-12-21 01:40:12,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327387703] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:40:12,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:40:12,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 01:40:12,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610414076] [2023-12-21 01:40:12,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:40:12,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 01:40:12,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:12,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 01:40:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-12-21 01:40:12,300 INFO L87 Difference]: Start difference. First operand 291 states and 355 transitions. Second operand has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 21 states have internal predecessors, (86), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-21 01:40:12,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:12,698 INFO L93 Difference]: Finished difference Result 589 states and 715 transitions. [2023-12-21 01:40:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 01:40:12,698 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 21 states have internal predecessors, (86), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) Word has length 124 [2023-12-21 01:40:12,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:12,699 INFO L225 Difference]: With dead ends: 589 [2023-12-21 01:40:12,699 INFO L226 Difference]: Without dead ends: 299 [2023-12-21 01:40:12,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2023-12-21 01:40:12,701 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 306 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:12,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 404 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:40:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-21 01:40:12,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 293. [2023-12-21 01:40:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 266 states have (on average 1.2105263157894737) internal successors, (322), 266 states have internal predecessors, (322), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 354 transitions. [2023-12-21 01:40:12,715 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 354 transitions. Word has length 124 [2023-12-21 01:40:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:12,715 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 354 transitions. [2023-12-21 01:40:12,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 21 states have internal predecessors, (86), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-21 01:40:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 354 transitions. [2023-12-21 01:40:12,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:12,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:12,716 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:12,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:12,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:12,924 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:12,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:12,924 INFO L85 PathProgramCache]: Analyzing trace with hash 73553316, now seen corresponding path program 1 times [2023-12-21 01:40:12,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:12,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319731381] [2023-12-21 01:40:12,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:12,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:12,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:12,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233268078] [2023-12-21 01:40:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:12,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:12,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:12,940 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:12,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 01:40:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:13,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-21 01:40:13,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:13,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 01:40:13,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-21 01:40:13,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:13,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 43 [2023-12-21 01:40:13,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:13,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 45 [2023-12-21 01:40:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-21 01:40:13,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:13,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:13,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319731381] [2023-12-21 01:40:13,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:13,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233268078] [2023-12-21 01:40:13,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233268078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:13,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:13,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-12-21 01:40:13,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173127501] [2023-12-21 01:40:13,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:13,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 01:40:13,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:13,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 01:40:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2023-12-21 01:40:13,962 INFO L87 Difference]: Start difference. First operand 293 states and 354 transitions. Second operand has 29 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-21 01:40:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:15,725 INFO L93 Difference]: Finished difference Result 830 states and 978 transitions. [2023-12-21 01:40:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 01:40:15,725 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 124 [2023-12-21 01:40:15,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:15,727 INFO L225 Difference]: With dead ends: 830 [2023-12-21 01:40:15,727 INFO L226 Difference]: Without dead ends: 538 [2023-12-21 01:40:15,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=579, Invalid=3203, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 01:40:15,729 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 660 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:15,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1772 Invalid, 2267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 01:40:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-21 01:40:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 293. [2023-12-21 01:40:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 266 states have (on average 1.2105263157894737) internal successors, (322), 266 states have internal predecessors, (322), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 354 transitions. [2023-12-21 01:40:15,751 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 354 transitions. Word has length 124 [2023-12-21 01:40:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:15,751 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 354 transitions. [2023-12-21 01:40:15,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-21 01:40:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 354 transitions. [2023-12-21 01:40:15,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:15,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:15,752 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:15,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:15,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:15,959 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:15,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash 753611686, now seen corresponding path program 1 times [2023-12-21 01:40:15,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:15,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47861769] [2023-12-21 01:40:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:15,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:15,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:15,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845265352] [2023-12-21 01:40:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:15,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:15,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:16,002 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:16,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 01:40:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:16,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 01:40:16,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:16,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:16,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2023-12-21 01:40:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:16,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:16,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:16,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47861769] [2023-12-21 01:40:16,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:16,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845265352] [2023-12-21 01:40:16,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845265352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:16,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:16,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:40:16,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803420547] [2023-12-21 01:40:16,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:16,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:40:16,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:16,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:40:16,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:40:16,192 INFO L87 Difference]: Start difference. First operand 293 states and 354 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:16,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:16,322 INFO L93 Difference]: Finished difference Result 734 states and 869 transitions. [2023-12-21 01:40:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:40:16,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-21 01:40:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:16,325 INFO L225 Difference]: With dead ends: 734 [2023-12-21 01:40:16,325 INFO L226 Difference]: Without dead ends: 442 [2023-12-21 01:40:16,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:40:16,326 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 124 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:16,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 497 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:40:16,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-21 01:40:16,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 293. [2023-12-21 01:40:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 266 states have (on average 1.1879699248120301) internal successors, (316), 266 states have internal predecessors, (316), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 348 transitions. [2023-12-21 01:40:16,346 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 348 transitions. Word has length 124 [2023-12-21 01:40:16,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:16,346 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 348 transitions. [2023-12-21 01:40:16,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 348 transitions. [2023-12-21 01:40:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:16,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:16,347 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:16,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:16,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:16,554 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:16,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:16,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1870995283, now seen corresponding path program 1 times [2023-12-21 01:40:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:16,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829015372] [2023-12-21 01:40:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:16,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:16,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:16,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85055962] [2023-12-21 01:40:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:16,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:16,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:16,584 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:16,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 01:40:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:16,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 01:40:16,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:16,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-21 01:40:16,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:16,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-12-21 01:40:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 149 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-21 01:40:17,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:40:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-21 01:40:17,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829015372] [2023-12-21 01:40:17,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85055962] [2023-12-21 01:40:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85055962] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:40:17,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:40:17,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 01:40:17,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280638623] [2023-12-21 01:40:17,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:40:17,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 01:40:17,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 01:40:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2023-12-21 01:40:17,231 INFO L87 Difference]: Start difference. First operand 293 states and 348 transitions. Second operand has 23 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-21 01:40:17,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:17,634 INFO L93 Difference]: Finished difference Result 684 states and 800 transitions. [2023-12-21 01:40:17,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 01:40:17,634 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) Word has length 124 [2023-12-21 01:40:17,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:17,635 INFO L225 Difference]: With dead ends: 684 [2023-12-21 01:40:17,635 INFO L226 Difference]: Without dead ends: 392 [2023-12-21 01:40:17,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2023-12-21 01:40:17,637 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 153 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:17,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 631 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:40:17,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-12-21 01:40:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 290. [2023-12-21 01:40:17,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 263 states have (on average 1.155893536121673) internal successors, (304), 263 states have internal predecessors, (304), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 336 transitions. [2023-12-21 01:40:17,672 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 336 transitions. Word has length 124 [2023-12-21 01:40:17,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:17,672 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 336 transitions. [2023-12-21 01:40:17,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-21 01:40:17,672 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 336 transitions. [2023-12-21 01:40:17,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:17,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:17,673 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:17,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:17,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-21 01:40:17,879 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:17,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:17,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1454676264, now seen corresponding path program 1 times [2023-12-21 01:40:17,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:17,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59402920] [2023-12-21 01:40:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:17,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:17,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:17,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063741888] [2023-12-21 01:40:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:17,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:17,900 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:17,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 01:40:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:18,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 01:40:18,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:18,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:18,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-21 01:40:18,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:18,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2023-12-21 01:40:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:18,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:18,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:18,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59402920] [2023-12-21 01:40:18,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:18,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063741888] [2023-12-21 01:40:18,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063741888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:18,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:18,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:40:18,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767427824] [2023-12-21 01:40:18,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:18,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:40:18,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:40:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:40:18,262 INFO L87 Difference]: Start difference. First operand 290 states and 336 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:18,493 INFO L93 Difference]: Finished difference Result 704 states and 803 transitions. [2023-12-21 01:40:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:40:18,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-21 01:40:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:18,495 INFO L225 Difference]: With dead ends: 704 [2023-12-21 01:40:18,495 INFO L226 Difference]: Without dead ends: 415 [2023-12-21 01:40:18,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:40:18,496 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 164 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 458 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:40:18,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-21 01:40:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 284. [2023-12-21 01:40:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 257 states have (on average 1.1361867704280155) internal successors, (292), 257 states have internal predecessors, (292), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 324 transitions. [2023-12-21 01:40:18,515 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 324 transitions. Word has length 124 [2023-12-21 01:40:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:18,515 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 324 transitions. [2023-12-21 01:40:18,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:18,516 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 324 transitions. [2023-12-21 01:40:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:40:18,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:18,516 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:18,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:18,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 01:40:18,723 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:18,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1731885018, now seen corresponding path program 1 times [2023-12-21 01:40:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:18,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205535260] [2023-12-21 01:40:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:18,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:18,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:18,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709505106] [2023-12-21 01:40:18,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:18,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:18,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:18,766 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:18,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 01:40:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:18,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 01:40:18,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:18,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:18,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2023-12-21 01:40:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:18,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:18,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:18,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205535260] [2023-12-21 01:40:18,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:18,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709505106] [2023-12-21 01:40:18,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709505106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:18,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:18,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:40:18,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243846154] [2023-12-21 01:40:18,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:18,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:40:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:40:18,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:40:18,953 INFO L87 Difference]: Start difference. First operand 284 states and 324 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:19,096 INFO L93 Difference]: Finished difference Result 584 states and 654 transitions. [2023-12-21 01:40:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:40:19,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-21 01:40:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:19,097 INFO L225 Difference]: With dead ends: 584 [2023-12-21 01:40:19,097 INFO L226 Difference]: Without dead ends: 301 [2023-12-21 01:40:19,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:40:19,099 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 86 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:19,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 510 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:40:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-21 01:40:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 221. [2023-12-21 01:40:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 194 states have (on average 1.097938144329897) internal successors, (213), 194 states have internal predecessors, (213), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 245 transitions. [2023-12-21 01:40:19,114 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 245 transitions. Word has length 124 [2023-12-21 01:40:19,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:19,115 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 245 transitions. [2023-12-21 01:40:19,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 245 transitions. [2023-12-21 01:40:19,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 01:40:19,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:19,115 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:19,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:19,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 01:40:19,322 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:19,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:19,323 INFO L85 PathProgramCache]: Analyzing trace with hash 645320458, now seen corresponding path program 1 times [2023-12-21 01:40:19,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:19,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841676107] [2023-12-21 01:40:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:19,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:19,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:19,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793963242] [2023-12-21 01:40:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:19,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:19,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:19,353 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:19,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 01:40:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:19,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 01:40:19,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:19,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2023-12-21 01:40:19,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:40:19,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 41 [2023-12-21 01:40:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:19,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:19,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:19,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841676107] [2023-12-21 01:40:19,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:19,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793963242] [2023-12-21 01:40:19,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793963242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:19,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:19,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 01:40:19,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301374144] [2023-12-21 01:40:19,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:19,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 01:40:19,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 01:40:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 01:40:19,796 INFO L87 Difference]: Start difference. First operand 221 states and 245 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:20,350 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2023-12-21 01:40:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 01:40:20,350 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-21 01:40:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:20,351 INFO L225 Difference]: With dead ends: 282 [2023-12-21 01:40:20,351 INFO L226 Difference]: Without dead ends: 280 [2023-12-21 01:40:20,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:40:20,352 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 85 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:20,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1235 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:40:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-21 01:40:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 265. [2023-12-21 01:40:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 238 states have (on average 1.0924369747899159) internal successors, (260), 238 states have internal predecessors, (260), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 292 transitions. [2023-12-21 01:40:20,369 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 292 transitions. Word has length 127 [2023-12-21 01:40:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:20,369 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 292 transitions. [2023-12-21 01:40:20,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 292 transitions. [2023-12-21 01:40:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 01:40:20,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:20,370 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:20,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:20,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-21 01:40:20,577 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:20,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:20,577 INFO L85 PathProgramCache]: Analyzing trace with hash -164026168, now seen corresponding path program 1 times [2023-12-21 01:40:20,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:20,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23900745] [2023-12-21 01:40:20,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:20,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:20,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:20,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102231487] [2023-12-21 01:40:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:20,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:20,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:20,592 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:20,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 01:40:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:20,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 01:40:20,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:20,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-21 01:40:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:20,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:20,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23900745] [2023-12-21 01:40:20,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102231487] [2023-12-21 01:40:20,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102231487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:20,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:40:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950972308] [2023-12-21 01:40:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:40:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:40:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:40:20,922 INFO L87 Difference]: Start difference. First operand 265 states and 292 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:21,100 INFO L93 Difference]: Finished difference Result 547 states and 601 transitions. [2023-12-21 01:40:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:40:21,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-21 01:40:21,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:21,102 INFO L225 Difference]: With dead ends: 547 [2023-12-21 01:40:21,102 INFO L226 Difference]: Without dead ends: 283 [2023-12-21 01:40:21,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:40:21,109 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 76 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:21,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 337 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:40:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-21 01:40:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 265. [2023-12-21 01:40:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 238 states have (on average 1.088235294117647) internal successors, (259), 238 states have internal predecessors, (259), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 291 transitions. [2023-12-21 01:40:21,127 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 291 transitions. Word has length 127 [2023-12-21 01:40:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:21,127 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 291 transitions. [2023-12-21 01:40:21,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 291 transitions. [2023-12-21 01:40:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 01:40:21,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:21,128 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:21,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:21,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 01:40:21,337 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:21,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash 511306952, now seen corresponding path program 1 times [2023-12-21 01:40:21,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:21,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617354716] [2023-12-21 01:40:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:21,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:21,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:21,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503472774] [2023-12-21 01:40:21,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:21,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:21,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:21,377 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:21,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-21 01:40:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:21,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 01:40:21,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:21,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-21 01:40:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:21,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:21,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:21,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617354716] [2023-12-21 01:40:21,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:21,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503472774] [2023-12-21 01:40:21,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503472774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:21,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:21,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:40:21,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252680249] [2023-12-21 01:40:21,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:21,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:40:21,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:40:21,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:40:21,703 INFO L87 Difference]: Start difference. First operand 265 states and 291 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:21,870 INFO L93 Difference]: Finished difference Result 543 states and 595 transitions. [2023-12-21 01:40:21,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:40:21,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-21 01:40:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:21,876 INFO L225 Difference]: With dead ends: 543 [2023-12-21 01:40:21,876 INFO L226 Difference]: Without dead ends: 279 [2023-12-21 01:40:21,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:40:21,878 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 81 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:21,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 350 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:40:21,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-21 01:40:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 265. [2023-12-21 01:40:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 238 states have (on average 1.084033613445378) internal successors, (258), 238 states have internal predecessors, (258), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 01:40:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 290 transitions. [2023-12-21 01:40:21,898 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 290 transitions. Word has length 127 [2023-12-21 01:40:21,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:21,899 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 290 transitions. [2023-12-21 01:40:21,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 290 transitions. [2023-12-21 01:40:21,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 01:40:21,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:40:21,900 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:40:21,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:22,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:22,107 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:40:22,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:40:22,107 INFO L85 PathProgramCache]: Analyzing trace with hash -298039674, now seen corresponding path program 1 times [2023-12-21 01:40:22,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:40:22,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084607989] [2023-12-21 01:40:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:22,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:40:22,127 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:40:22,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637478595] [2023-12-21 01:40:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:40:22,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:22,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:40:22,128 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:40:22,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-21 01:40:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:40:22,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 01:40:22,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:40:22,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 01:40:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 01:40:22,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:40:22,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:40:22,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084607989] [2023-12-21 01:40:22,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:40:22,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637478595] [2023-12-21 01:40:22,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637478595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:40:22,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:40:22,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 01:40:22,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961607027] [2023-12-21 01:40:22,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:40:22,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:40:22,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:40:22,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:40:22,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:40:22,408 INFO L87 Difference]: Start difference. First operand 265 states and 290 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:40:22,810 INFO L93 Difference]: Finished difference Result 376 states and 418 transitions. [2023-12-21 01:40:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 01:40:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-21 01:40:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:40:22,811 INFO L225 Difference]: With dead ends: 376 [2023-12-21 01:40:22,811 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 01:40:22,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-12-21 01:40:22,812 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 105 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:40:22,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1797 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:40:22,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 01:40:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 01:40:22,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 01:40:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 01:40:22,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 127 [2023-12-21 01:40:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:40:22,812 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 01:40:22,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-21 01:40:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 01:40:22,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 01:40:22,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 01:40:22,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-21 01:40:23,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:40:23,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 01:42:13,735 WARN L293 SmtUtils]: Spent 1.85m on a formula simplification. DAG size of input: 131 DAG size of output: 117 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 01:43:55,776 WARN L293 SmtUtils]: Spent 1.70m on a formula simplification. DAG size of input: 129 DAG size of output: 115 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 01:49:05,455 WARN L293 SmtUtils]: Spent 5.16m on a formula simplification. DAG size of input: 141 DAG size of output: 109 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-21 01:54:23,291 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-3-3-2-3-3-5-3-6-3-6-3-6-3-6-3-4-5-4-5-4-5-4-5-4-5-4-5-4-4-4-3-4-2-4-2-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-40-6-5-5-5-6-5-6-5-6-5-6-5-4-5-4-5-4-5-4-5-4-5-4-5-4-4-4-3-4-2-4-2-4-2-4-1 context. [2023-12-21 01:54:23,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 01:54:23,294 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-21 01:54:23,295 INFO L158 Benchmark]: Toolchain (without parser) took 878526.02ms. Allocated memory was 311.4MB in the beginning and 868.2MB in the end (delta: 556.8MB). Free memory was 264.9MB in the beginning and 435.3MB in the end (delta: -170.4MB). Peak memory consumption was 387.4MB. Max. memory is 8.0GB. [2023-12-21 01:54:23,295 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory was 135.5MB in the beginning and 135.5MB in the end (delta: 71.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 01:54:23,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.09ms. Allocated memory is still 311.4MB. Free memory was 264.9MB in the beginning and 249.2MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 01:54:23,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.62ms. Allocated memory is still 311.4MB. Free memory was 249.2MB in the beginning and 245.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 01:54:23,296 INFO L158 Benchmark]: Boogie Preprocessor took 68.79ms. Allocated memory is still 311.4MB. Free memory was 245.0MB in the beginning and 239.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-21 01:54:23,296 INFO L158 Benchmark]: RCFGBuilder took 586.34ms. Allocated memory is still 311.4MB. Free memory was 239.7MB in the beginning and 207.7MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-21 01:54:23,296 INFO L158 Benchmark]: TraceAbstraction took 877599.82ms. Allocated memory was 311.4MB in the beginning and 868.2MB in the end (delta: 556.8MB). Free memory was 207.2MB in the beginning and 435.3MB in the end (delta: -228.1MB). Peak memory consumption was 329.7MB. Max. memory is 8.0GB. [2023-12-21 01:54:23,297 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory was 135.5MB in the beginning and 135.5MB in the end (delta: 71.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.09ms. Allocated memory is still 311.4MB. Free memory was 264.9MB in the beginning and 249.2MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.62ms. Allocated memory is still 311.4MB. Free memory was 249.2MB in the beginning and 245.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 68.79ms. Allocated memory is still 311.4MB. Free memory was 245.0MB in the beginning and 239.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 586.34ms. Allocated memory is still 311.4MB. Free memory was 239.7MB in the beginning and 207.7MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 877599.82ms. Allocated memory was 311.4MB in the beginning and 868.2MB in the end (delta: 556.8MB). Free memory was 207.2MB in the beginning and 435.3MB in the end (delta: -228.1MB). Peak memory consumption was 329.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-2-11-1 term,while PolyPacSimplificationTermWalker was simplifying 11 xjuncts wrt. a ∨-10-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown