/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-fpi/ifcomp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:23:57,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:23:57,155 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:23:57,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:23:57,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:23:57,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:23:57,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:23:57,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:23:57,171 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:23:57,171 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:23:57,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:23:57,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:23:57,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:23:57,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:23:57,173 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:23:57,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:23:57,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:23:57,173 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:23:57,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:23:57,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:23:57,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:23:57,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:23:57,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:23:57,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:23:57,175 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:23:57,175 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:23:57,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:23:57,175 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:23:57,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:23:57,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:23:57,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:23:57,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:23:57,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:23:57,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:23:57,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:23:57,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:23:57,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:23:57,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:23:57,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:23:57,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:23:57,177 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:23:57,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:23:57,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:23:57,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:23:57,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:23:57,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:23:57,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:23:57,349 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:23:57,349 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:23:57,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifcomp.c [2023-12-16 00:23:58,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:23:58,565 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:23:58,566 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifcomp.c [2023-12-16 00:23:58,571 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920b57b1c/91082516713747ce8fc0f0d0d8c5a987/FLAG16a0ff8f5 [2023-12-16 00:23:58,581 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920b57b1c/91082516713747ce8fc0f0d0d8c5a987 [2023-12-16 00:23:58,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:23:58,584 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:23:58,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:23:58,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:23:58,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:23:58,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7ac30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58, skipping insertion in model container [2023-12-16 00:23:58,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:23:58,708 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifcomp.c[589,602] [2023-12-16 00:23:58,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:23:58,733 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:23:58,741 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifcomp.c[589,602] [2023-12-16 00:23:58,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:23:58,757 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:23:58,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58 WrapperNode [2023-12-16 00:23:58,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:23:58,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:23:58,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:23:58,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:23:58,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,798 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2023-12-16 00:23:58,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:23:58,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:23:58,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:23:58,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:23:58,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,818 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 2, 2, 2]. [2023-12-16 00:23:58,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,823 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:23:58,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:23:58,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:23:58,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:23:58,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (1/1) ... [2023-12-16 00:23:58,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:23:58,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:23:58,854 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) [2023-12-16 00:23:58,857 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 [2023-12-16 00:23:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:23:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:23:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 00:23:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 00:23:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-16 00:23:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 00:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 00:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-16 00:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-16 00:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-16 00:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:23:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 00:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 00:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-16 00:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-16 00:23:58,929 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:23:58,931 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:23:59,099 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:23:59,114 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:23:59,114 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-16 00:23:59,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:23:59 BoogieIcfgContainer [2023-12-16 00:23:59,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:23:59,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:23:59,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:23:59,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:23:59,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:23:58" (1/3) ... [2023-12-16 00:23:59,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459c697f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:23:59, skipping insertion in model container [2023-12-16 00:23:59,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:23:58" (2/3) ... [2023-12-16 00:23:59,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459c697f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:23:59, skipping insertion in model container [2023-12-16 00:23:59,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:23:59" (3/3) ... [2023-12-16 00:23:59,120 INFO L112 eAbstractionObserver]: Analyzing ICFG ifcomp.c [2023-12-16 00:23:59,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:23:59,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 00:23:59,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:23:59,203 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;@47a6ac2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:23:59,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 00:23:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 23 states have internal predecessors, (37), 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) [2023-12-16 00:23:59,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 00:23:59,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:23:59,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:23:59,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:23:59,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:23:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash 744019223, now seen corresponding path program 1 times [2023-12-16 00:23:59,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:23:59,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364162972] [2023-12-16 00:23:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:23:59,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:23:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:23:59,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:23:59,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364162972] [2023-12-16 00:23:59,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 00:23:59,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668311265] [2023-12-16 00:23:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:23:59,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:23:59,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:23:59,343 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) [2023-12-16 00:23:59,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:23:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:23:59,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 00:23:59,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:23:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:23:59,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:23:59,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668311265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:23:59,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:23:59,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:23:59,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770643255] [2023-12-16 00:23:59,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:23:59,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:23:59,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:23:59,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:23:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:23:59,462 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 23 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:23:59,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:23:59,482 INFO L93 Difference]: Finished difference Result 45 states and 69 transitions. [2023-12-16 00:23:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:23:59,485 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-16 00:23:59,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:23:59,490 INFO L225 Difference]: With dead ends: 45 [2023-12-16 00:23:59,490 INFO L226 Difference]: Without dead ends: 21 [2023-12-16 00:23:59,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:23:59,496 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:23:59,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:23:59,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-16 00:23:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-16 00:23:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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) [2023-12-16 00:23:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-12-16 00:23:59,517 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2023-12-16 00:23:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:23:59,517 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-12-16 00:23:59,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:23:59,518 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-16 00:23:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 00:23:59,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:23:59,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:23:59,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:23:59,723 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 [2023-12-16 00:23:59,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:23:59,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:23:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash 262319171, now seen corresponding path program 1 times [2023-12-16 00:23:59,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:23:59,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361215808] [2023-12-16 00:23:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:23:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:23:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:23:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:23:59,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361215808] [2023-12-16 00:23:59,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 00:23:59,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480401775] [2023-12-16 00:23:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:23:59,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:23:59,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:23:59,782 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) [2023-12-16 00:23:59,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:23:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:23:59,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 00:23:59,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:23:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:23:59,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:23:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480401775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:23:59,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:23:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:23:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756689398] [2023-12-16 00:23:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:23:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:23:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:23:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:23:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:23:59,892 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:23:59,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:23:59,962 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2023-12-16 00:23:59,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:23:59,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-16 00:23:59,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:23:59,963 INFO L225 Difference]: With dead ends: 49 [2023-12-16 00:23:59,964 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 00:23:59,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:23:59,965 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 53 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:23:59,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 12 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:23:59,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 00:23:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2023-12-16 00:23:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 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) [2023-12-16 00:23:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-12-16 00:23:59,976 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 13 [2023-12-16 00:23:59,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:23:59,976 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-12-16 00:23:59,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:23:59,978 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-12-16 00:23:59,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 00:23:59,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:23:59,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:23:59,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 00:24:00,183 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 [2023-12-16 00:24:00,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:24:00,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:24:00,185 INFO L85 PathProgramCache]: Analyzing trace with hash 985676480, now seen corresponding path program 1 times [2023-12-16 00:24:00,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:24:00,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58005766] [2023-12-16 00:24:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:00,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:24:00,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:24:00,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266209570] [2023-12-16 00:24:00,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:00,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:24:00,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:24:00,207 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) [2023-12-16 00:24:00,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:24:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:24:00,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 00:24:00,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:24:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:24:00,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:24:00,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:24:00,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58005766] [2023-12-16 00:24:00,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:24:00,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266209570] [2023-12-16 00:24:00,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266209570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:24:00,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:24:00,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:24:00,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407299462] [2023-12-16 00:24:00,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:24:00,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:24:00,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:24:00,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:24:00,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:24:00,270 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:24:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:24:00,303 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2023-12-16 00:24:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:24:00,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-16 00:24:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:24:00,304 INFO L225 Difference]: With dead ends: 54 [2023-12-16 00:24:00,304 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 00:24:00,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:24:00,305 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:24:00,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:24:00,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 00:24:00,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2023-12-16 00:24:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 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) [2023-12-16 00:24:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-12-16 00:24:00,308 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 22 [2023-12-16 00:24:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:24:00,309 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-12-16 00:24:00,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:24:00,309 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-12-16 00:24:00,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 00:24:00,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:24:00,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:24:00,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 00:24:00,514 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 [2023-12-16 00:24:00,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:24:00,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:24:00,515 INFO L85 PathProgramCache]: Analyzing trace with hash -789330882, now seen corresponding path program 1 times [2023-12-16 00:24:00,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:24:00,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286759331] [2023-12-16 00:24:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:00,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:24:00,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:24:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094214137] [2023-12-16 00:24:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:00,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:24:00,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:24:00,534 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) [2023-12-16 00:24:00,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:24:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:24:00,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 00:24:00,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:24:00,618 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 11 treesize of output 7 [2023-12-16 00:24:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:24:00,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:24:00,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:24:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286759331] [2023-12-16 00:24:00,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:24:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094214137] [2023-12-16 00:24:00,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094214137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:24:00,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:24:00,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:24:00,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152919896] [2023-12-16 00:24:00,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:24:00,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:24:00,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:24:00,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:24:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:24:00,650 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:24:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:24:00,680 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2023-12-16 00:24:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 00:24:00,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-16 00:24:00,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:24:00,681 INFO L225 Difference]: With dead ends: 41 [2023-12-16 00:24:00,681 INFO L226 Difference]: Without dead ends: 39 [2023-12-16 00:24:00,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:24:00,682 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:24:00,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 67 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:24:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-16 00:24:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2023-12-16 00:24:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:24:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-12-16 00:24:00,687 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 22 [2023-12-16 00:24:00,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:24:00,687 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-12-16 00:24:00,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:24:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-12-16 00:24:00,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 00:24:00,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:24:00,688 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:24:00,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 00:24:00,893 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 [2023-12-16 00:24:00,893 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:24:00,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:24:00,894 INFO L85 PathProgramCache]: Analyzing trace with hash -5157465, now seen corresponding path program 1 times [2023-12-16 00:24:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:24:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743569747] [2023-12-16 00:24:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:00,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:24:00,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:24:00,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549106439] [2023-12-16 00:24:00,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:00,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:24:00,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:24:00,924 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) [2023-12-16 00:24:00,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:24:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:24:01,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 00:24:01,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:24:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:24:01,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:24:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:24:01,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:24:01,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743569747] [2023-12-16 00:24:01,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:24:01,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549106439] [2023-12-16 00:24:01,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549106439] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:24:01,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:24:01,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-16 00:24:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469815573] [2023-12-16 00:24:01,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:24:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 00:24:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:24:01,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 00:24:01,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 00:24:01,129 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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) [2023-12-16 00:24:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:24:01,263 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2023-12-16 00:24:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 00:24:01,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-16 00:24:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:24:01,264 INFO L225 Difference]: With dead ends: 86 [2023-12-16 00:24:01,264 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 00:24:01,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-16 00:24:01,267 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 56 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:24:01,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 32 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:24:01,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 00:24:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2023-12-16 00:24:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:24:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2023-12-16 00:24:01,278 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 25 [2023-12-16 00:24:01,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:24:01,278 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2023-12-16 00:24:01,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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) [2023-12-16 00:24:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-12-16 00:24:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 00:24:01,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:24:01,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:24:01,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 00:24:01,484 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 [2023-12-16 00:24:01,484 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:24:01,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:24:01,484 INFO L85 PathProgramCache]: Analyzing trace with hash -802018263, now seen corresponding path program 1 times [2023-12-16 00:24:01,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:24:01,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327171719] [2023-12-16 00:24:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:01,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:24:01,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:24:01,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307867342] [2023-12-16 00:24:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:01,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:24:01,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:24:01,523 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) [2023-12-16 00:24:01,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 00:24:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:24:01,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-16 00:24:01,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:24:01,697 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 11 treesize of output 7 [2023-12-16 00:24:01,732 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 15 treesize of output 11 [2023-12-16 00:24:01,735 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 23 treesize of output 11 [2023-12-16 00:24:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 00:24:01,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:24:01,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:24:01,899 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 213 treesize of output 163 [2023-12-16 00:24:02,058 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 21 treesize of output 19 [2023-12-16 00:24:02,065 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 22 treesize of output 20 [2023-12-16 00:24:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 00:24:02,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:24:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327171719] [2023-12-16 00:24:02,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:24:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307867342] [2023-12-16 00:24:02,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307867342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:24:02,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:24:02,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-12-16 00:24:02,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287269110] [2023-12-16 00:24:02,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:24:02,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 00:24:02,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:24:02,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 00:24:02,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-12-16 00:24:02,082 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 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) [2023-12-16 00:24:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:24:02,457 INFO L93 Difference]: Finished difference Result 123 states and 149 transitions. [2023-12-16 00:24:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 00:24:02,457 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-16 00:24:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:24:02,458 INFO L225 Difference]: With dead ends: 123 [2023-12-16 00:24:02,458 INFO L226 Difference]: Without dead ends: 96 [2023-12-16 00:24:02,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2023-12-16 00:24:02,459 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 152 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:24:02,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 60 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:24:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-16 00:24:02,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 47. [2023-12-16 00:24:02,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 46 states have internal predecessors, (56), 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) [2023-12-16 00:24:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2023-12-16 00:24:02,465 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 31 [2023-12-16 00:24:02,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:24:02,465 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2023-12-16 00:24:02,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 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) [2023-12-16 00:24:02,465 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2023-12-16 00:24:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 00:24:02,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:24:02,466 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:24:02,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 00:24:02,671 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 [2023-12-16 00:24:02,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:24:02,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:24:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash -17802788, now seen corresponding path program 1 times [2023-12-16 00:24:02,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:24:02,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058895696] [2023-12-16 00:24:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:02,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:24:02,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:24:02,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021133509] [2023-12-16 00:24:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:02,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:24:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:24:02,702 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) [2023-12-16 00:24:02,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 00:24:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:24:02,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-16 00:24:02,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:24:02,887 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 11 treesize of output 7 [2023-12-16 00:24:02,928 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 24 [2023-12-16 00:24:02,931 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 13 treesize of output 9 [2023-12-16 00:24:02,973 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 11 treesize of output 7 [2023-12-16 00:24:03,023 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 19 treesize of output 18 [2023-12-16 00:24:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:24:03,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:24:03,442 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 48 treesize of output 44 [2023-12-16 00:24:03,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:24:03,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 73 [2023-12-16 00:24:03,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:24:03,537 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 213 treesize of output 163 [2023-12-16 00:24:03,682 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 21 treesize of output 19 [2023-12-16 00:24:03,689 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 22 treesize of output 20 [2023-12-16 00:24:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 00:24:03,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:24:03,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058895696] [2023-12-16 00:24:03,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:24:03,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021133509] [2023-12-16 00:24:03,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021133509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:24:03,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:24:03,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2023-12-16 00:24:03,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694904417] [2023-12-16 00:24:03,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:24:03,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 00:24:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:24:03,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 00:24:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2023-12-16 00:24:03,715 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 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) [2023-12-16 00:24:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:24:05,783 INFO L93 Difference]: Finished difference Result 214 states and 248 transitions. [2023-12-16 00:24:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-16 00:24:05,783 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-16 00:24:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:24:05,784 INFO L225 Difference]: With dead ends: 214 [2023-12-16 00:24:05,784 INFO L226 Difference]: Without dead ends: 182 [2023-12-16 00:24:05,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=770, Invalid=3262, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 00:24:05,786 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 603 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:24:05,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 159 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:24:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-16 00:24:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 82. [2023-12-16 00:24:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 81 states have internal predecessors, (102), 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) [2023-12-16 00:24:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2023-12-16 00:24:05,805 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 34 [2023-12-16 00:24:05,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:24:05,805 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2023-12-16 00:24:05,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 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) [2023-12-16 00:24:05,806 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2023-12-16 00:24:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 00:24:05,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:24:05,810 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:24:05,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 00:24:06,016 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 [2023-12-16 00:24:06,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:24:06,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:24:06,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2076677303, now seen corresponding path program 2 times [2023-12-16 00:24:06,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:24:06,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525095162] [2023-12-16 00:24:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:06,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:24:06,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:24:06,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50150441] [2023-12-16 00:24:06,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 00:24:06,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:24:06,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:24:06,055 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) [2023-12-16 00:24:06,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 00:24:06,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 00:24:06,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:24:06,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 00:24:06,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:24:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 00:24:06,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:24:06,275 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 00:24:06,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:24:06,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525095162] [2023-12-16 00:24:06,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:24:06,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50150441] [2023-12-16 00:24:06,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50150441] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:24:06,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:24:06,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-12-16 00:24:06,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713332226] [2023-12-16 00:24:06,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:24:06,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 00:24:06,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:24:06,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 00:24:06,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 00:24:06,276 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:24:06,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:24:06,429 INFO L93 Difference]: Finished difference Result 204 states and 246 transitions. [2023-12-16 00:24:06,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:24:06,430 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-16 00:24:06,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:24:06,431 INFO L225 Difference]: With dead ends: 204 [2023-12-16 00:24:06,431 INFO L226 Difference]: Without dead ends: 111 [2023-12-16 00:24:06,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:24:06,431 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 77 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:24:06,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 59 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:24:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-16 00:24:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2023-12-16 00:24:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.2134831460674158) internal successors, (108), 89 states have internal predecessors, (108), 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) [2023-12-16 00:24:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2023-12-16 00:24:06,440 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 37 [2023-12-16 00:24:06,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:24:06,440 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2023-12-16 00:24:06,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:24:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2023-12-16 00:24:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 00:24:06,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:24:06,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:24:06,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 00:24:06,645 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 [2023-12-16 00:24:06,646 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:24:06,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:24:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1757283202, now seen corresponding path program 3 times [2023-12-16 00:24:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:24:06,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044864546] [2023-12-16 00:24:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:24:06,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:24:06,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:24:06,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346528491] [2023-12-16 00:24:06,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 00:24:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:24:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:24:06,681 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) [2023-12-16 00:24:06,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 00:24:07,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 00:24:07,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:24:07,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-16 00:24:07,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:24:07,179 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 11 treesize of output 7 [2023-12-16 00:24:07,276 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 171 treesize of output 145 [2023-12-16 00:24:07,303 INFO L349 Elim1Store]: treesize reduction 250, result has 0.4 percent of original size [2023-12-16 00:24:07,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 145 treesize of output 341 [2023-12-16 00:24:07,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:07,342 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 00:24:07,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:07,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 176 [2023-12-16 00:24:07,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:07,435 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 00:24:07,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:07,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 176 [2023-12-16 00:24:07,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:07,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-16 00:24:07,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:07,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-16 00:24:08,464 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 523 treesize of output 465 [2023-12-16 00:24:08,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:08,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:08,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:08,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:08,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:08,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:08,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:08,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:08,508 INFO L349 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2023-12-16 00:24:08,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 4 case distinctions, treesize of input 375 treesize of output 617 [2023-12-16 00:24:09,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:09,967 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-12-16 00:24:09,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 19 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 283 treesize of output 342 [2023-12-16 00:24:10,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:10,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:10,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:10,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 123 [2023-12-16 00:24:10,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:10,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 284 [2023-12-16 00:24:10,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:10,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 141 treesize of output 72 [2023-12-16 00:24:18,386 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 11 treesize of output 7 [2023-12-16 00:24:21,136 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 24 [2023-12-16 00:24:30,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:30,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:30,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:30,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:24:30,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 78 [2023-12-16 00:24:30,384 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 0 case distinctions, treesize of input 30 treesize of output 21 [2023-12-16 00:24:30,696 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 11 treesize of output 7 [2023-12-16 00:24:30,847 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 215 treesize of output 189 [2023-12-16 00:24:30,865 INFO L349 Elim1Store]: treesize reduction 316, result has 0.3 percent of original size [2023-12-16 00:24:30,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 189 treesize of output 385 [2023-12-16 00:24:31,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:31,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 127 treesize of output 81 [2023-12-16 00:24:31,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:31,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 248 [2023-12-16 00:24:31,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:31,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 74 treesize of output 25 [2023-12-16 00:24:31,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:31,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 43 [2023-12-16 00:24:32,546 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 724 treesize of output 664 [2023-12-16 00:24:32,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:32,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:32,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:32,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:32,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:32,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:32,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:32,587 INFO L349 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2023-12-16 00:24:32,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 4 case distinctions, treesize of input 529 treesize of output 757 [2023-12-16 00:24:32,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:32,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:32,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:24:32,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 495 treesize of output 425 [2023-12-16 00:24:33,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,566 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 00:24:33,678 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-12-16 00:24:33,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 6 select indices, 6 select index equivalence classes, 19 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 195 treesize of output 268 [2023-12-16 00:24:33,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:33,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 00:24:33,974 INFO L349 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2023-12-16 00:24:33,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 195 treesize of output 258 [2023-12-16 00:24:34,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 141 [2023-12-16 00:24:34,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 141 [2023-12-16 00:24:34,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,862 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 00:24:34,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 130 [2023-12-16 00:24:34,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:34,969 INFO L349 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2023-12-16 00:24:34,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 93 [2023-12-16 00:24:35,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,048 INFO L349 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2023-12-16 00:24:35,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 69 [2023-12-16 00:24:35,146 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 00:24:35,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 81 [2023-12-16 00:24:35,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,252 INFO L349 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2023-12-16 00:24:35,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 100 [2023-12-16 00:24:35,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 00:24:35,377 INFO L349 Elim1Store]: treesize reduction 104, result has 2.8 percent of original size [2023-12-16 00:24:35,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 114 treesize of output 89 [2023-12-16 00:24:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:24:37,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:24:39,633 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 105 treesize of output 99 [2023-12-16 00:24:39,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:24:39,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 608 treesize of output 552 [2023-12-16 00:24:41,544 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 154 treesize of output 144 [2023-12-16 00:24:41,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 354 treesize of output 314 [2023-12-16 00:24:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:24:42,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:24:42,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044864546] [2023-12-16 00:24:42,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:24:42,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346528491] [2023-12-16 00:24:42,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346528491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:24:42,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:24:42,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 29] total 61 [2023-12-16 00:24:42,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710658012] [2023-12-16 00:24:42,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:24:42,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-16 00:24:42,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:24:42,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-16 00:24:42,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=3172, Unknown=2, NotChecked=0, Total=3660 [2023-12-16 00:24:42,341 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 61 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 61 states have internal predecessors, (91), 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) [2023-12-16 00:24:50,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-16 00:25:08,338 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:25:08,342 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:25:08,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:25:08,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=637, Invalid=4053, Unknown=2, NotChecked=0, Total=4692 [2023-12-16 00:25:08,419 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:25:08,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 00:25:08,420 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 00:25:08,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-16 00:25:08,620 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 [2023-12-16 00:25:08,621 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (90states) and FLOYD_HOARE automaton (currently 15 states, 61 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-19-6-3-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-2-1 context. [2023-12-16 00:25:08,624 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2023-12-16 00:25:08,626 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:25:08,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:25:08 BoogieIcfgContainer [2023-12-16 00:25:08,627 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:25:08,627 INFO L158 Benchmark]: Toolchain (without parser) took 70043.26ms. Allocated memory was 232.8MB in the beginning and 411.0MB in the end (delta: 178.3MB). Free memory was 181.8MB in the beginning and 322.3MB in the end (delta: -140.5MB). Peak memory consumption was 231.1MB. Max. memory is 8.0GB. [2023-12-16 00:25:08,627 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:25:08,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.57ms. Allocated memory is still 232.8MB. Free memory was 181.4MB in the beginning and 169.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 00:25:08,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.96ms. Allocated memory is still 232.8MB. Free memory was 169.9MB in the beginning and 168.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 00:25:08,628 INFO L158 Benchmark]: Boogie Preprocessor took 30.10ms. Allocated memory is still 232.8MB. Free memory was 168.1MB in the beginning and 166.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 00:25:08,628 INFO L158 Benchmark]: RCFGBuilder took 285.11ms. Allocated memory is still 232.8MB. Free memory was 166.0MB in the beginning and 151.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 00:25:08,628 INFO L158 Benchmark]: TraceAbstraction took 69510.82ms. Allocated memory was 232.8MB in the beginning and 411.0MB in the end (delta: 178.3MB). Free memory was 150.5MB in the beginning and 322.3MB in the end (delta: -171.8MB). Peak memory consumption was 199.7MB. Max. memory is 8.0GB. [2023-12-16 00:25:08,629 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 186.6MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 172.57ms. Allocated memory is still 232.8MB. Free memory was 181.4MB in the beginning and 169.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.96ms. Allocated memory is still 232.8MB. Free memory was 169.9MB in the beginning and 168.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.10ms. Allocated memory is still 232.8MB. Free memory was 168.1MB in the beginning and 166.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 285.11ms. Allocated memory is still 232.8MB. Free memory was 166.0MB in the beginning and 151.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 69510.82ms. Allocated memory was 232.8MB in the beginning and 411.0MB in the end (delta: 178.3MB). Free memory was 150.5MB in the beginning and 322.3MB in the end (delta: -171.8MB). Peak memory consumption was 199.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 15]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 15). Cancelled while NwaCegarLoop was constructing difference of abstraction (90states) and FLOYD_HOARE automaton (currently 15 states, 61 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-19-6-3-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.4s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 985 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 985 mSDsluCounter, 437 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 316 mSDsCounter, 379 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1457 IncrementalHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 379 mSolverCounterUnsat, 121 mSDtfsCounter, 1457 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 472 GetRequests, 279 SyntacticMatches, 7 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2986 ImplicationChecksByTransitivity, 29.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=8, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 212 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 37.0s InterpolantComputationTime, 269 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 402 ConstructedInterpolants, 25 QuantifiedInterpolants, 13031 SizeOfPredicates, 80 NumberOfNonLiveVariables, 1106 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 82/210 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown