/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-68.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 14:10:08,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 14:10:08,882 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 14:10:08,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 14:10:08,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 14:10:08,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 14:10:08,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 14:10:08,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 14:10:08,915 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 14:10:08,918 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 14:10:08,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 14:10:08,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 14:10:08,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 14:10:08,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 14:10:08,920 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 14:10:08,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 14:10:08,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 14:10:08,920 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 14:10:08,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 14:10:08,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 14:10:08,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 14:10:08,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 14:10:08,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 14:10:08,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 14:10:08,922 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 14:10:08,923 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 14:10:08,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 14:10:08,923 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 14:10:08,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 14:10:08,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 14:10:08,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 14:10:08,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 14:10:08,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:10:08,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 14:10:08,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 14:10:08,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 14:10:08,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 14:10:08,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 14:10:08,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 14:10:08,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 14:10:08,925 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 14:10:08,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 14:10:08,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 14:10:08,926 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 14:10:09,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 14:10:09,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 14:10:09,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 14:10:09,093 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 14:10:09,093 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 14:10:09,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-68.i [2023-12-19 14:10:10,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 14:10:10,295 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 14:10:10,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-68.i [2023-12-19 14:10:10,315 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd413c1ec/df20ad6d5c5943d9b6a33ea0a61d3bff/FLAGd1793c4fe [2023-12-19 14:10:10,324 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd413c1ec/df20ad6d5c5943d9b6a33ea0a61d3bff [2023-12-19 14:10:10,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 14:10:10,326 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 14:10:10,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 14:10:10,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 14:10:10,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 14:10:10,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:10,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92f4c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10, skipping insertion in model container [2023-12-19 14:10:10,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:10,392 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 14:10:10,491 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-68.i[916,929] [2023-12-19 14:10:10,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:10:10,683 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 14:10:10,696 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-68.i[916,929] [2023-12-19 14:10:10,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:10:10,795 INFO L206 MainTranslator]: Completed translation [2023-12-19 14:10:10,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10 WrapperNode [2023-12-19 14:10:10,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 14:10:10,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 14:10:10,798 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 14:10:10,798 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 14:10:10,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:10,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:10,934 INFO L138 Inliner]: procedures = 26, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 701 [2023-12-19 14:10:10,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 14:10:10,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 14:10:10,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 14:10:10,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 14:10:10,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:10,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:10,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:11,037 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 14:10:11,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:11,038 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:11,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:11,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:11,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:11,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:11,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 14:10:11,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 14:10:11,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 14:10:11,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 14:10:11,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (1/1) ... [2023-12-19 14:10:11,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:10:11,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:11,165 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) [2023-12-19 14:10:11,174 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 [2023-12-19 14:10:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 14:10:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 14:10:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 14:10:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 14:10:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 14:10:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 14:10:11,304 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 14:10:11,306 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 14:10:12,072 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 14:10:12,140 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 14:10:12,140 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 14:10:12,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:10:12 BoogieIcfgContainer [2023-12-19 14:10:12,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 14:10:12,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 14:10:12,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 14:10:12,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 14:10:12,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:10:10" (1/3) ... [2023-12-19 14:10:12,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418e1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:10:12, skipping insertion in model container [2023-12-19 14:10:12,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:10:10" (2/3) ... [2023-12-19 14:10:12,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418e1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:10:12, skipping insertion in model container [2023-12-19 14:10:12,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:10:12" (3/3) ... [2023-12-19 14:10:12,146 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-68.i [2023-12-19 14:10:12,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 14:10:12,157 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 14:10:12,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 14:10:12,196 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;@615e764b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 14:10:12,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 14:10:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 193 states have (on average 1.549222797927461) internal successors, (299), 194 states have internal predecessors, (299), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-19 14:10:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-19 14:10:12,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:12,231 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:12,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:12,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:12,235 INFO L85 PathProgramCache]: Analyzing trace with hash -417427043, now seen corresponding path program 1 times [2023-12-19 14:10:12,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:12,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551741992] [2023-12-19 14:10:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:12,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:12,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:12,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551741992] [2023-12-19 14:10:12,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 14:10:12,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176412120] [2023-12-19 14:10:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:12,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:12,581 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) [2023-12-19 14:10:12,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 14:10:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:12,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 14:10:12,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2023-12-19 14:10:13,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:10:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176412120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:10:13,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:10:13,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 14:10:13,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004042157] [2023-12-19 14:10:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:10:13,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 14:10:13,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:13,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 14:10:13,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 14:10:13,110 INFO L87 Difference]: Start difference. First operand has 272 states, 193 states have (on average 1.549222797927461) internal successors, (299), 194 states have internal predecessors, (299), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-19 14:10:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:13,165 INFO L93 Difference]: Finished difference Result 541 states and 976 transitions. [2023-12-19 14:10:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 14:10:13,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 524 [2023-12-19 14:10:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:13,193 INFO L225 Difference]: With dead ends: 541 [2023-12-19 14:10:13,193 INFO L226 Difference]: Without dead ends: 270 [2023-12-19 14:10:13,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 14:10:13,199 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:13,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 441 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:10:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-19 14:10:13,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-12-19 14:10:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 192 states have (on average 1.5208333333333333) internal successors, (292), 192 states have internal predecessors, (292), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-19 14:10:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 444 transitions. [2023-12-19 14:10:13,260 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 444 transitions. Word has length 524 [2023-12-19 14:10:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:13,261 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 444 transitions. [2023-12-19 14:10:13,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-19 14:10:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 444 transitions. [2023-12-19 14:10:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-19 14:10:13,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:13,274 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:13,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:13,474 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 [2023-12-19 14:10:13,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:13,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash -774079679, now seen corresponding path program 1 times [2023-12-19 14:10:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:13,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248638614] [2023-12-19 14:10:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:13,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:13,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:13,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394791147] [2023-12-19 14:10:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:13,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:13,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:13,639 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) [2023-12-19 14:10:13,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 14:10:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:14,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:10:14,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 14:10:14,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:10:14,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248638614] [2023-12-19 14:10:14,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:14,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394791147] [2023-12-19 14:10:14,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394791147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:10:14,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:10:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:10:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174346575] [2023-12-19 14:10:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:10:14,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:10:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:14,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:10:14,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:10:14,176 INFO L87 Difference]: Start difference. First operand 270 states and 444 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:14,291 INFO L93 Difference]: Finished difference Result 807 states and 1328 transitions. [2023-12-19 14:10:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:10:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 525 [2023-12-19 14:10:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:14,301 INFO L225 Difference]: With dead ends: 807 [2023-12-19 14:10:14,301 INFO L226 Difference]: Without dead ends: 538 [2023-12-19 14:10:14,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:10:14,305 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 427 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:14,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1106 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:10:14,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-19 14:10:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2023-12-19 14:10:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 381 states have (on average 1.5091863517060367) internal successors, (575), 381 states have internal predecessors, (575), 152 states have call successors, (152), 2 states have call predecessors, (152), 2 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 14:10:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 879 transitions. [2023-12-19 14:10:14,431 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 879 transitions. Word has length 525 [2023-12-19 14:10:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:14,432 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 879 transitions. [2023-12-19 14:10:14,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:14,433 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 879 transitions. [2023-12-19 14:10:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-19 14:10:14,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:14,439 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:14,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:14,653 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 [2023-12-19 14:10:14,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:14,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:14,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1134378111, now seen corresponding path program 1 times [2023-12-19 14:10:14,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:14,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472606783] [2023-12-19 14:10:14,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:14,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:14,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:14,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056490569] [2023-12-19 14:10:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:14,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:14,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:14,766 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) [2023-12-19 14:10:14,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 14:10:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:15,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:10:15,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 14:10:15,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:10:15,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:15,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472606783] [2023-12-19 14:10:15,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:15,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056490569] [2023-12-19 14:10:15,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056490569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:10:15,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:10:15,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:10:15,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759104120] [2023-12-19 14:10:15,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:10:15,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:10:15,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:15,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:10:15,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:10:15,200 INFO L87 Difference]: Start difference. First operand 536 states and 879 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:15,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:15,327 INFO L93 Difference]: Finished difference Result 1602 states and 2627 transitions. [2023-12-19 14:10:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:10:15,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 525 [2023-12-19 14:10:15,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:15,336 INFO L225 Difference]: With dead ends: 1602 [2023-12-19 14:10:15,336 INFO L226 Difference]: Without dead ends: 1067 [2023-12-19 14:10:15,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:10:15,340 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 434 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:15,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1225 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:10:15,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2023-12-19 14:10:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2023-12-19 14:10:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 756 states have (on average 1.4947089947089947) internal successors, (1130), 756 states have internal predecessors, (1130), 304 states have call successors, (304), 4 states have call predecessors, (304), 4 states have return successors, (304), 304 states have call predecessors, (304), 304 states have call successors, (304) [2023-12-19 14:10:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1738 transitions. [2023-12-19 14:10:15,455 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1738 transitions. Word has length 525 [2023-12-19 14:10:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:15,456 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1738 transitions. [2023-12-19 14:10:15,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1738 transitions. [2023-12-19 14:10:15,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-19 14:10:15,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:15,463 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:15,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 14:10:15,670 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 [2023-12-19 14:10:15,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:15,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash 988157819, now seen corresponding path program 1 times [2023-12-19 14:10:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10582427] [2023-12-19 14:10:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:15,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:15,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048702988] [2023-12-19 14:10:15,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:15,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:15,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:15,753 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) [2023-12-19 14:10:15,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 14:10:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:16,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 14:10:16,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 14:10:16,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:10:16,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:16,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10582427] [2023-12-19 14:10:16,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:16,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048702988] [2023-12-19 14:10:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048702988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:10:16,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:10:16,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:10:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616011304] [2023-12-19 14:10:16,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:10:16,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:10:16,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:16,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:10:16,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:10:16,605 INFO L87 Difference]: Start difference. First operand 1065 states and 1738 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:16,841 INFO L93 Difference]: Finished difference Result 2643 states and 4316 transitions. [2023-12-19 14:10:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 14:10:16,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 525 [2023-12-19 14:10:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:16,848 INFO L225 Difference]: With dead ends: 2643 [2023-12-19 14:10:16,849 INFO L226 Difference]: Without dead ends: 1579 [2023-12-19 14:10:16,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:10:16,851 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 450 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:16,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1682 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:10:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-12-19 14:10:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1247. [2023-12-19 14:10:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 861 states have (on average 1.4715447154471544) internal successors, (1267), 861 states have internal predecessors, (1267), 380 states have call successors, (380), 5 states have call predecessors, (380), 5 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2023-12-19 14:10:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2027 transitions. [2023-12-19 14:10:16,948 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2027 transitions. Word has length 525 [2023-12-19 14:10:16,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:16,949 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2027 transitions. [2023-12-19 14:10:16,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2027 transitions. [2023-12-19 14:10:16,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-19 14:10:16,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:16,954 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:16,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 14:10:17,162 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 [2023-12-19 14:10:17,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:17,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:17,163 INFO L85 PathProgramCache]: Analyzing trace with hash 210487795, now seen corresponding path program 1 times [2023-12-19 14:10:17,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:17,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314211242] [2023-12-19 14:10:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:17,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:17,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:17,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090236796] [2023-12-19 14:10:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:17,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:17,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:17,213 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) [2023-12-19 14:10:17,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 14:10:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:17,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:10:17,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 14:10:17,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:10:17,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:17,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314211242] [2023-12-19 14:10:17,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:17,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090236796] [2023-12-19 14:10:17,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090236796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:10:17,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:10:17,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:10:17,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129211402] [2023-12-19 14:10:17,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:10:17,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:10:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:17,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:10:17,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:10:17,590 INFO L87 Difference]: Start difference. First operand 1247 states and 2027 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:18,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:18,129 INFO L93 Difference]: Finished difference Result 3446 states and 5574 transitions. [2023-12-19 14:10:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:10:18,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 526 [2023-12-19 14:10:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:18,138 INFO L225 Difference]: With dead ends: 3446 [2023-12-19 14:10:18,138 INFO L226 Difference]: Without dead ends: 2354 [2023-12-19 14:10:18,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:10:18,143 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1164 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:18,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 1032 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:10:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2023-12-19 14:10:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2344. [2023-12-19 14:10:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 1637 states have (on average 1.4544899205864386) internal successors, (2381), 1641 states have internal predecessors, (2381), 692 states have call successors, (692), 14 states have call predecessors, (692), 14 states have return successors, (692), 688 states have call predecessors, (692), 692 states have call successors, (692) [2023-12-19 14:10:18,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 3765 transitions. [2023-12-19 14:10:18,258 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 3765 transitions. Word has length 526 [2023-12-19 14:10:18,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:18,259 INFO L495 AbstractCegarLoop]: Abstraction has 2344 states and 3765 transitions. [2023-12-19 14:10:18,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 3765 transitions. [2023-12-19 14:10:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-19 14:10:18,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:18,265 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:18,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 14:10:18,473 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 [2023-12-19 14:10:18,473 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:18,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:18,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1247677517, now seen corresponding path program 1 times [2023-12-19 14:10:18,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:18,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856324040] [2023-12-19 14:10:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:18,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:18,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:18,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421636418] [2023-12-19 14:10:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:18,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:18,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:18,515 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) [2023-12-19 14:10:18,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 14:10:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:18,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 14:10:18,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 14:10:18,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:10:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:18,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856324040] [2023-12-19 14:10:18,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421636418] [2023-12-19 14:10:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421636418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:10:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:10:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:10:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180951392] [2023-12-19 14:10:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:10:18,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:10:18,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:18,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:10:18,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:10:18,945 INFO L87 Difference]: Start difference. First operand 2344 states and 3765 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:19,560 INFO L93 Difference]: Finished difference Result 9964 states and 15965 transitions. [2023-12-19 14:10:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 14:10:19,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 526 [2023-12-19 14:10:19,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:19,593 INFO L225 Difference]: With dead ends: 9964 [2023-12-19 14:10:19,593 INFO L226 Difference]: Without dead ends: 7830 [2023-12-19 14:10:19,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:10:19,601 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1086 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:19,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 2807 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:10:19,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7830 states. [2023-12-19 14:10:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7830 to 2764. [2023-12-19 14:10:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2057 states have (on average 1.4880894506562956) internal successors, (3061), 2061 states have internal predecessors, (3061), 692 states have call successors, (692), 14 states have call predecessors, (692), 14 states have return successors, (692), 688 states have call predecessors, (692), 692 states have call successors, (692) [2023-12-19 14:10:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4445 transitions. [2023-12-19 14:10:19,882 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4445 transitions. Word has length 526 [2023-12-19 14:10:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:19,883 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 4445 transitions. [2023-12-19 14:10:19,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4445 transitions. [2023-12-19 14:10:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-19 14:10:19,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:19,887 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:19,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:20,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:20,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:20,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:20,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1602221235, now seen corresponding path program 1 times [2023-12-19 14:10:20,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:20,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560301333] [2023-12-19 14:10:20,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:20,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:20,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:20,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394193606] [2023-12-19 14:10:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:20,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:20,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:20,161 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) [2023-12-19 14:10:20,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 14:10:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:20,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:10:20,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 14:10:20,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:10:20,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:20,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560301333] [2023-12-19 14:10:20,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:20,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394193606] [2023-12-19 14:10:20,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394193606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:10:20,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:10:20,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:10:20,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663690875] [2023-12-19 14:10:20,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:10:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:10:20,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:10:20,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:10:20,613 INFO L87 Difference]: Start difference. First operand 2764 states and 4445 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:21,162 INFO L93 Difference]: Finished difference Result 7924 states and 12701 transitions. [2023-12-19 14:10:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:10:21,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 526 [2023-12-19 14:10:21,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:21,181 INFO L225 Difference]: With dead ends: 7924 [2023-12-19 14:10:21,181 INFO L226 Difference]: Without dead ends: 5286 [2023-12-19 14:10:21,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:10:21,188 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 899 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:21,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 976 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:10:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2023-12-19 14:10:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 3828. [2023-12-19 14:10:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3115 states have (on average 1.524558587479936) internal successors, (4749), 3119 states have internal predecessors, (4749), 692 states have call successors, (692), 20 states have call predecessors, (692), 20 states have return successors, (692), 688 states have call predecessors, (692), 692 states have call successors, (692) [2023-12-19 14:10:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 6133 transitions. [2023-12-19 14:10:21,397 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 6133 transitions. Word has length 526 [2023-12-19 14:10:21,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:21,397 INFO L495 AbstractCegarLoop]: Abstraction has 3828 states and 6133 transitions. [2023-12-19 14:10:21,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:21,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 6133 transitions. [2023-12-19 14:10:21,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-19 14:10:21,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:21,402 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:21,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 14:10:21,624 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 [2023-12-19 14:10:21,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:21,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1309717131, now seen corresponding path program 1 times [2023-12-19 14:10:21,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:21,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030469958] [2023-12-19 14:10:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:21,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:21,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:21,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549083850] [2023-12-19 14:10:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:21,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:21,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:21,669 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) [2023-12-19 14:10:21,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 14:10:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:22,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:10:22,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5755 proven. 105 refuted. 0 times theorem prover too weak. 5540 trivial. 0 not checked. [2023-12-19 14:10:22,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-19 14:10:22,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:22,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030469958] [2023-12-19 14:10:22,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:22,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549083850] [2023-12-19 14:10:22,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549083850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:22,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:22,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:10:22,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638858137] [2023-12-19 14:10:22,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:22,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:10:22,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:10:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:10:22,512 INFO L87 Difference]: Start difference. First operand 3828 states and 6133 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-12-19 14:10:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:23,136 INFO L93 Difference]: Finished difference Result 7162 states and 11461 transitions. [2023-12-19 14:10:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:10:23,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 526 [2023-12-19 14:10:23,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:23,152 INFO L225 Difference]: With dead ends: 7162 [2023-12-19 14:10:23,153 INFO L226 Difference]: Without dead ends: 3524 [2023-12-19 14:10:23,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 1044 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 14:10:23,156 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 536 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:23,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1009 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:10:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2023-12-19 14:10:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3496. [2023-12-19 14:10:23,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3496 states, 2936 states have (on average 1.534741144414169) internal successors, (4506), 2940 states have internal predecessors, (4506), 540 states have call successors, (540), 19 states have call predecessors, (540), 19 states have return successors, (540), 536 states have call predecessors, (540), 540 states have call successors, (540) [2023-12-19 14:10:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 5586 transitions. [2023-12-19 14:10:23,306 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 5586 transitions. Word has length 526 [2023-12-19 14:10:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:23,306 INFO L495 AbstractCegarLoop]: Abstraction has 3496 states and 5586 transitions. [2023-12-19 14:10:23,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-12-19 14:10:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 5586 transitions. [2023-12-19 14:10:23,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-19 14:10:23,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:23,311 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:23,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:23,518 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 [2023-12-19 14:10:23,519 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:23,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1347277055, now seen corresponding path program 1 times [2023-12-19 14:10:23,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:23,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463875393] [2023-12-19 14:10:23,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:23,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:23,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:23,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752134315] [2023-12-19 14:10:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:23,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:23,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:23,585 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) [2023-12-19 14:10:23,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 14:10:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:23,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:10:23,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 14:10:24,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:10:24,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463875393] [2023-12-19 14:10:24,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752134315] [2023-12-19 14:10:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752134315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:10:24,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:10:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:10:24,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311898782] [2023-12-19 14:10:24,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:10:24,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:10:24,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:10:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:10:24,005 INFO L87 Difference]: Start difference. First operand 3496 states and 5586 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:24,301 INFO L93 Difference]: Finished difference Result 8958 states and 14306 transitions. [2023-12-19 14:10:24,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:10:24,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 527 [2023-12-19 14:10:24,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:24,324 INFO L225 Difference]: With dead ends: 8958 [2023-12-19 14:10:24,324 INFO L226 Difference]: Without dead ends: 5710 [2023-12-19 14:10:24,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:10:24,330 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 456 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:24,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1157 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:10:24,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2023-12-19 14:10:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 5700. [2023-12-19 14:10:24,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5044 states have (on average 1.5475812846946868) internal successors, (7806), 5056 states have internal predecessors, (7806), 628 states have call successors, (628), 27 states have call predecessors, (628), 27 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) [2023-12-19 14:10:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 9062 transitions. [2023-12-19 14:10:24,559 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 9062 transitions. Word has length 527 [2023-12-19 14:10:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:24,559 INFO L495 AbstractCegarLoop]: Abstraction has 5700 states and 9062 transitions. [2023-12-19 14:10:24,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:10:24,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 9062 transitions. [2023-12-19 14:10:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-19 14:10:24,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:24,564 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:24,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:24,772 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 [2023-12-19 14:10:24,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:24,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1962978817, now seen corresponding path program 1 times [2023-12-19 14:10:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:24,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40636378] [2023-12-19 14:10:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:24,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:24,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502863538] [2023-12-19 14:10:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:24,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:24,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:24,830 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:24,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 14:10:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:25,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:10:25,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5269 proven. 78 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2023-12-19 14:10:25,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 147 proven. 78 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-19 14:10:25,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:25,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40636378] [2023-12-19 14:10:25,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:25,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502863538] [2023-12-19 14:10:25,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502863538] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:25,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:25,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:10:25,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570482047] [2023-12-19 14:10:25,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:25,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:10:25,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:10:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:10:25,677 INFO L87 Difference]: Start difference. First operand 5700 states and 9062 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-19 14:10:26,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:26,129 INFO L93 Difference]: Finished difference Result 11270 states and 17884 transitions. [2023-12-19 14:10:26,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:10:26,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 527 [2023-12-19 14:10:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:26,140 INFO L225 Difference]: With dead ends: 11270 [2023-12-19 14:10:26,140 INFO L226 Difference]: Without dead ends: 5758 [2023-12-19 14:10:26,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1046 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 14:10:26,145 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 544 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:26,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 903 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:10:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2023-12-19 14:10:26,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 5720. [2023-12-19 14:10:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5059 states have (on average 1.541609013639059) internal successors, (7799), 5071 states have internal predecessors, (7799), 628 states have call successors, (628), 32 states have call predecessors, (628), 32 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) [2023-12-19 14:10:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 9055 transitions. [2023-12-19 14:10:26,306 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 9055 transitions. Word has length 527 [2023-12-19 14:10:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:26,307 INFO L495 AbstractCegarLoop]: Abstraction has 5720 states and 9055 transitions. [2023-12-19 14:10:26,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-19 14:10:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 9055 transitions. [2023-12-19 14:10:26,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-19 14:10:26,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:26,312 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:26,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:26,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 14:10:26,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:26,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1935913215, now seen corresponding path program 1 times [2023-12-19 14:10:26,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:26,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676003656] [2023-12-19 14:10:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:26,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:26,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:26,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675093546] [2023-12-19 14:10:26,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:26,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:26,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:26,573 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:26,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 14:10:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:26,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 14:10:26,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5685 proven. 126 refuted. 0 times theorem prover too weak. 5589 trivial. 0 not checked. [2023-12-19 14:10:27,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 99 proven. 126 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-19 14:10:27,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:27,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676003656] [2023-12-19 14:10:27,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:27,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675093546] [2023-12-19 14:10:27,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675093546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:27,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:27,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 14:10:27,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452839469] [2023-12-19 14:10:27,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:27,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 14:10:27,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:27,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 14:10:27,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 14:10:27,496 INFO L87 Difference]: Start difference. First operand 5720 states and 9055 transitions. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-19 14:10:28,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:28,058 INFO L93 Difference]: Finished difference Result 11388 states and 17972 transitions. [2023-12-19 14:10:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 14:10:28,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) Word has length 527 [2023-12-19 14:10:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:28,070 INFO L225 Difference]: With dead ends: 11388 [2023-12-19 14:10:28,070 INFO L226 Difference]: Without dead ends: 5812 [2023-12-19 14:10:28,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1045 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-19 14:10:28,078 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 751 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:28,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 886 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:10:28,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2023-12-19 14:10:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 5756. [2023-12-19 14:10:28,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5756 states, 5086 states have (on average 1.5314589068029887) internal successors, (7789), 5098 states have internal predecessors, (7789), 628 states have call successors, (628), 41 states have call predecessors, (628), 41 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) [2023-12-19 14:10:28,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 9045 transitions. [2023-12-19 14:10:28,287 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 9045 transitions. Word has length 527 [2023-12-19 14:10:28,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:28,287 INFO L495 AbstractCegarLoop]: Abstraction has 5756 states and 9045 transitions. [2023-12-19 14:10:28,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-19 14:10:28,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 9045 transitions. [2023-12-19 14:10:28,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-19 14:10:28,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:28,292 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:28,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:28,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 14:10:28,497 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:28,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1941657475, now seen corresponding path program 1 times [2023-12-19 14:10:28,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800586144] [2023-12-19 14:10:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:28,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:28,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:28,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951021166] [2023-12-19 14:10:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:28,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:28,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:28,554 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:28,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 14:10:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:28,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 14:10:28,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 6815 proven. 747 refuted. 0 times theorem prover too weak. 3838 trivial. 0 not checked. [2023-12-19 14:10:31,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 240 proven. 642 refuted. 0 times theorem prover too weak. 10518 trivial. 0 not checked. [2023-12-19 14:10:33,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:33,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800586144] [2023-12-19 14:10:33,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:33,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951021166] [2023-12-19 14:10:33,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951021166] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:33,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:33,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 35 [2023-12-19 14:10:33,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686289718] [2023-12-19 14:10:33,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:33,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 14:10:33,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 14:10:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 14:10:33,180 INFO L87 Difference]: Start difference. First operand 5756 states and 9045 transitions. Second operand has 35 states, 35 states have (on average 8.628571428571428) internal successors, (302), 34 states have internal predecessors, (302), 10 states have call successors, (138), 6 states have call predecessors, (138), 14 states have return successors, (139), 10 states have call predecessors, (139), 10 states have call successors, (139) [2023-12-19 14:10:37,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:37,106 INFO L93 Difference]: Finished difference Result 23168 states and 35969 transitions. [2023-12-19 14:10:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-19 14:10:37,110 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.628571428571428) internal successors, (302), 34 states have internal predecessors, (302), 10 states have call successors, (138), 6 states have call predecessors, (138), 14 states have return successors, (139), 10 states have call predecessors, (139), 10 states have call successors, (139) Word has length 527 [2023-12-19 14:10:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:37,162 INFO L225 Difference]: With dead ends: 23168 [2023-12-19 14:10:37,163 INFO L226 Difference]: Without dead ends: 17668 [2023-12-19 14:10:37,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1030 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3921 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2872, Invalid=9784, Unknown=0, NotChecked=0, Total=12656 [2023-12-19 14:10:37,177 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 4289 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4302 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:37,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4302 Valid, 2696 Invalid, 3490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 2869 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 14:10:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17668 states. [2023-12-19 14:10:37,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17668 to 16622. [2023-12-19 14:10:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16622 states, 15111 states have (on average 1.534775990999934) internal successors, (23192), 15163 states have internal predecessors, (23192), 1328 states have call successors, (1328), 182 states have call predecessors, (1328), 182 states have return successors, (1328), 1276 states have call predecessors, (1328), 1328 states have call successors, (1328) [2023-12-19 14:10:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16622 states to 16622 states and 25848 transitions. [2023-12-19 14:10:37,752 INFO L78 Accepts]: Start accepts. Automaton has 16622 states and 25848 transitions. Word has length 527 [2023-12-19 14:10:37,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:37,752 INFO L495 AbstractCegarLoop]: Abstraction has 16622 states and 25848 transitions. [2023-12-19 14:10:37,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.628571428571428) internal successors, (302), 34 states have internal predecessors, (302), 10 states have call successors, (138), 6 states have call predecessors, (138), 14 states have return successors, (139), 10 states have call predecessors, (139), 10 states have call successors, (139) [2023-12-19 14:10:37,753 INFO L276 IsEmpty]: Start isEmpty. Operand 16622 states and 25848 transitions. [2023-12-19 14:10:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-19 14:10:37,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:37,813 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:10:37,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:38,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 14:10:38,015 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:38,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:38,015 INFO L85 PathProgramCache]: Analyzing trace with hash 136219141, now seen corresponding path program 1 times [2023-12-19 14:10:38,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:38,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511311385] [2023-12-19 14:10:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:38,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:38,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:38,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615825917] [2023-12-19 14:10:38,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:38,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:38,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:38,096 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:38,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 14:10:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:38,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-19 14:10:38,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 8753 proven. 696 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2023-12-19 14:10:41,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 456 proven. 426 refuted. 0 times theorem prover too weak. 10518 trivial. 0 not checked. [2023-12-19 14:10:46,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511311385] [2023-12-19 14:10:46,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615825917] [2023-12-19 14:10:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615825917] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:46,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:46,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25] total 53 [2023-12-19 14:10:46,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868188122] [2023-12-19 14:10:46,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:46,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 14:10:46,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:46,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 14:10:46,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=2168, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 14:10:46,128 INFO L87 Difference]: Start difference. First operand 16622 states and 25848 transitions. Second operand has 53 states, 51 states have (on average 6.254901960784314) internal successors, (319), 51 states have internal predecessors, (319), 14 states have call successors, (140), 8 states have call predecessors, (140), 16 states have return successors, (141), 12 states have call predecessors, (141), 14 states have call successors, (141) [2023-12-19 14:11:05,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:11:05,212 INFO L93 Difference]: Finished difference Result 90664 states and 139118 transitions. [2023-12-19 14:11:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-12-19 14:11:05,212 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 51 states have (on average 6.254901960784314) internal successors, (319), 51 states have internal predecessors, (319), 14 states have call successors, (140), 8 states have call predecessors, (140), 16 states have return successors, (141), 12 states have call predecessors, (141), 14 states have call successors, (141) Word has length 527 [2023-12-19 14:11:05,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:11:05,320 INFO L225 Difference]: With dead ends: 90664 [2023-12-19 14:11:05,320 INFO L226 Difference]: Without dead ends: 74424 [2023-12-19 14:11:05,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1024 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14716 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=7922, Invalid=34308, Unknown=0, NotChecked=0, Total=42230 [2023-12-19 14:11:05,349 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 11769 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 5836 mSolverCounterSat, 1737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11780 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 7573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1737 IncrementalHoareTripleChecker+Valid, 5836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:11:05,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11780 Valid, 4334 Invalid, 7573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1737 Valid, 5836 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 14:11:05,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74424 states. [2023-12-19 14:11:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74424 to 11844. [2023-12-19 14:11:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11844 states, 10665 states have (on average 1.5049226441631505) internal successors, (16050), 10681 states have internal predecessors, (16050), 916 states have call successors, (916), 262 states have call predecessors, (916), 262 states have return successors, (916), 900 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-19 14:11:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11844 states to 11844 states and 17882 transitions. [2023-12-19 14:11:06,498 INFO L78 Accepts]: Start accepts. Automaton has 11844 states and 17882 transitions. Word has length 527 [2023-12-19 14:11:06,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:11:06,499 INFO L495 AbstractCegarLoop]: Abstraction has 11844 states and 17882 transitions. [2023-12-19 14:11:06,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 51 states have (on average 6.254901960784314) internal successors, (319), 51 states have internal predecessors, (319), 14 states have call successors, (140), 8 states have call predecessors, (140), 16 states have return successors, (141), 12 states have call predecessors, (141), 14 states have call successors, (141) [2023-12-19 14:11:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 11844 states and 17882 transitions. [2023-12-19 14:11:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-19 14:11:06,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:11:06,508 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:11:06,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 14:11:06,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 14:11:06,717 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:11:06,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:11:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash 723025155, now seen corresponding path program 1 times [2023-12-19 14:11:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:11:06,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712555239] [2023-12-19 14:11:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:06,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:11:06,754 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:11:06,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965369505] [2023-12-19 14:11:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:06,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:06,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:11:06,755 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:11:06,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 14:11:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:11:07,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 14:11:07,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:11:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 14:11:08,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:11:08,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:11:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712555239] [2023-12-19 14:11:08,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:11:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965369505] [2023-12-19 14:11:08,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965369505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:11:08,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:11:08,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:11:08,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359177217] [2023-12-19 14:11:08,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:11:08,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:11:08,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:11:08,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:11:08,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:11:08,223 INFO L87 Difference]: Start difference. First operand 11844 states and 17882 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:11:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:11:09,312 INFO L93 Difference]: Finished difference Result 28507 states and 43462 transitions. [2023-12-19 14:11:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 14:11:09,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 527 [2023-12-19 14:11:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:11:09,469 INFO L225 Difference]: With dead ends: 28507 [2023-12-19 14:11:09,469 INFO L226 Difference]: Without dead ends: 16874 [2023-12-19 14:11:09,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:11:09,491 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 324 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:11:09,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 1560 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:11:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16874 states. [2023-12-19 14:11:10,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16874 to 11844. [2023-12-19 14:11:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11844 states, 10665 states have (on average 1.5048288795124238) internal successors, (16049), 10681 states have internal predecessors, (16049), 916 states have call successors, (916), 262 states have call predecessors, (916), 262 states have return successors, (916), 900 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-19 14:11:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11844 states to 11844 states and 17881 transitions. [2023-12-19 14:11:10,316 INFO L78 Accepts]: Start accepts. Automaton has 11844 states and 17881 transitions. Word has length 527 [2023-12-19 14:11:10,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:11:10,316 INFO L495 AbstractCegarLoop]: Abstraction has 11844 states and 17881 transitions. [2023-12-19 14:11:10,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 14:11:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 11844 states and 17881 transitions. [2023-12-19 14:11:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-19 14:11:10,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:11:10,326 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:11:10,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 14:11:10,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:10,535 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:11:10,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:11:10,536 INFO L85 PathProgramCache]: Analyzing trace with hash -400187116, now seen corresponding path program 1 times [2023-12-19 14:11:10,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:11:10,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653489039] [2023-12-19 14:11:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:10,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:11:10,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:11:10,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516514413] [2023-12-19 14:11:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:10,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:10,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:11:10,581 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:11:10,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 14:11:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:11:11,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 14:11:11,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:11:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 945 proven. 216 refuted. 0 times theorem prover too weak. 10239 trivial. 0 not checked. [2023-12-19 14:11:12,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:11:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 9 proven. 216 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-19 14:11:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:11:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653489039] [2023-12-19 14:11:12,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:11:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516514413] [2023-12-19 14:11:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516514413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:11:12,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:11:12,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 14:11:12,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275671077] [2023-12-19 14:11:12,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:11:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 14:11:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:11:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 14:11:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 14:11:12,400 INFO L87 Difference]: Start difference. First operand 11844 states and 17881 transitions. Second operand has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 4 states have call successors, (152), 3 states have call predecessors, (152), 5 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) [2023-12-19 14:11:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:11:13,651 INFO L93 Difference]: Finished difference Result 23660 states and 35637 transitions. [2023-12-19 14:11:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:11:13,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 4 states have call successors, (152), 3 states have call predecessors, (152), 5 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) Word has length 528 [2023-12-19 14:11:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:11:13,671 INFO L225 Difference]: With dead ends: 23660 [2023-12-19 14:11:13,671 INFO L226 Difference]: Without dead ends: 12036 [2023-12-19 14:11:13,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-12-19 14:11:13,679 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 1238 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:11:13,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 874 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:11:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12036 states. [2023-12-19 14:11:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12036 to 11928. [2023-12-19 14:11:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11928 states, 10728 states have (on average 1.5011185682326622) internal successors, (16104), 10744 states have internal predecessors, (16104), 916 states have call successors, (916), 283 states have call predecessors, (916), 283 states have return successors, (916), 900 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-19 14:11:14,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11928 states to 11928 states and 17936 transitions. [2023-12-19 14:11:14,525 INFO L78 Accepts]: Start accepts. Automaton has 11928 states and 17936 transitions. Word has length 528 [2023-12-19 14:11:14,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:11:14,526 INFO L495 AbstractCegarLoop]: Abstraction has 11928 states and 17936 transitions. [2023-12-19 14:11:14,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 4 states have call successors, (152), 3 states have call predecessors, (152), 5 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) [2023-12-19 14:11:14,526 INFO L276 IsEmpty]: Start isEmpty. Operand 11928 states and 17936 transitions. [2023-12-19 14:11:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-19 14:11:14,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:11:14,537 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:11:14,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 14:11:14,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 14:11:14,746 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:11:14,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:11:14,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1936205394, now seen corresponding path program 1 times [2023-12-19 14:11:14,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:11:14,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798769665] [2023-12-19 14:11:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:14,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:11:14,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:11:14,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637395571] [2023-12-19 14:11:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:14,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:14,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:11:14,800 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:11:14,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 14:11:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:11:15,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 14:11:15,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:11:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 8462 proven. 483 refuted. 0 times theorem prover too weak. 2455 trivial. 0 not checked. [2023-12-19 14:11:16,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:11:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 288 proven. 378 refuted. 0 times theorem prover too weak. 10734 trivial. 0 not checked. [2023-12-19 14:11:18,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:11:18,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798769665] [2023-12-19 14:11:18,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:11:18,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637395571] [2023-12-19 14:11:18,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637395571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:11:18,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:11:18,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2023-12-19 14:11:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233249927] [2023-12-19 14:11:18,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:11:18,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 14:11:18,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:11:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 14:11:18,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2023-12-19 14:11:18,161 INFO L87 Difference]: Start difference. First operand 11928 states and 17936 transitions. Second operand has 32 states, 32 states have (on average 8.0) internal successors, (256), 32 states have internal predecessors, (256), 9 states have call successors, (140), 5 states have call predecessors, (140), 12 states have return successors, (141), 9 states have call predecessors, (141), 9 states have call successors, (141) [2023-12-19 14:11:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:11:21,681 INFO L93 Difference]: Finished difference Result 36799 states and 55986 transitions. [2023-12-19 14:11:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-19 14:11:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.0) internal successors, (256), 32 states have internal predecessors, (256), 9 states have call successors, (140), 5 states have call predecessors, (140), 12 states have return successors, (141), 9 states have call predecessors, (141), 9 states have call successors, (141) Word has length 528 [2023-12-19 14:11:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:11:21,708 INFO L225 Difference]: With dead ends: 36799 [2023-12-19 14:11:21,708 INFO L226 Difference]: Without dead ends: 25259 [2023-12-19 14:11:21,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=838, Invalid=2242, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 14:11:21,716 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 2861 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2872 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 14:11:21,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2872 Valid, 3220 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 14:11:21,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25259 states. [2023-12-19 14:11:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25259 to 13279. [2023-12-19 14:11:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13279 states, 12074 states have (on average 1.5001656451880072) internal successors, (18113), 12090 states have internal predecessors, (18113), 916 states have call successors, (916), 288 states have call predecessors, (916), 288 states have return successors, (916), 900 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-19 14:11:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13279 states to 13279 states and 19945 transitions. [2023-12-19 14:11:22,659 INFO L78 Accepts]: Start accepts. Automaton has 13279 states and 19945 transitions. Word has length 528 [2023-12-19 14:11:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:11:22,659 INFO L495 AbstractCegarLoop]: Abstraction has 13279 states and 19945 transitions. [2023-12-19 14:11:22,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.0) internal successors, (256), 32 states have internal predecessors, (256), 9 states have call successors, (140), 5 states have call predecessors, (140), 12 states have return successors, (141), 9 states have call predecessors, (141), 9 states have call successors, (141) [2023-12-19 14:11:22,660 INFO L276 IsEmpty]: Start isEmpty. Operand 13279 states and 19945 transitions. [2023-12-19 14:11:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-19 14:11:22,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:11:22,668 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:11:22,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 14:11:22,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 14:11:22,877 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:11:22,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:11:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash -367279470, now seen corresponding path program 1 times [2023-12-19 14:11:22,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:11:22,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403753871] [2023-12-19 14:11:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:22,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:11:22,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:11:22,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626554486] [2023-12-19 14:11:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:22,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:22,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:11:22,912 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:11:22,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 14:11:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:11:23,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 14:11:23,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:11:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5486 proven. 318 refuted. 0 times theorem prover too weak. 5596 trivial. 0 not checked. [2023-12-19 14:11:25,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:11:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 126 proven. 321 refuted. 0 times theorem prover too weak. 10953 trivial. 0 not checked. [2023-12-19 14:11:26,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:11:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403753871] [2023-12-19 14:11:26,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:11:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626554486] [2023-12-19 14:11:26,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626554486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:11:26,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:11:26,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-19 14:11:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686616973] [2023-12-19 14:11:26,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:11:26,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 14:11:26,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:11:26,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 14:11:26,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2023-12-19 14:11:26,177 INFO L87 Difference]: Start difference. First operand 13279 states and 19945 transitions. Second operand has 23 states, 23 states have (on average 13.391304347826088) internal successors, (308), 23 states have internal predecessors, (308), 6 states have call successors, (152), 4 states have call predecessors, (152), 8 states have return successors, (152), 6 states have call predecessors, (152), 6 states have call successors, (152) [2023-12-19 14:11:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:11:33,803 INFO L93 Difference]: Finished difference Result 76087 states and 114968 transitions. [2023-12-19 14:11:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-19 14:11:33,804 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.391304347826088) internal successors, (308), 23 states have internal predecessors, (308), 6 states have call successors, (152), 4 states have call predecessors, (152), 8 states have return successors, (152), 6 states have call predecessors, (152), 6 states have call successors, (152) Word has length 528 [2023-12-19 14:11:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:11:33,875 INFO L225 Difference]: With dead ends: 76087 [2023-12-19 14:11:33,876 INFO L226 Difference]: Without dead ends: 63369 [2023-12-19 14:11:33,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1188, Invalid=4068, Unknown=0, NotChecked=0, Total=5256 [2023-12-19 14:11:33,889 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 3362 mSDsluCounter, 6468 mSDsCounter, 0 mSdLazyCounter, 3792 mSolverCounterSat, 1045 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3419 SdHoareTripleChecker+Valid, 7293 SdHoareTripleChecker+Invalid, 4837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1045 IncrementalHoareTripleChecker+Valid, 3792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 14:11:33,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3419 Valid, 7293 Invalid, 4837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1045 Valid, 3792 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 14:11:33,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63369 states. [2023-12-19 14:11:37,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63369 to 43979. [2023-12-19 14:11:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43979 states, 40623 states have (on average 1.5112128597100165) internal successors, (61390), 40695 states have internal predecessors, (61390), 2476 states have call successors, (2476), 879 states have call predecessors, (2476), 879 states have return successors, (2476), 2404 states have call predecessors, (2476), 2476 states have call successors, (2476) [2023-12-19 14:11:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43979 states to 43979 states and 66342 transitions. [2023-12-19 14:11:37,152 INFO L78 Accepts]: Start accepts. Automaton has 43979 states and 66342 transitions. Word has length 528 [2023-12-19 14:11:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:11:37,153 INFO L495 AbstractCegarLoop]: Abstraction has 43979 states and 66342 transitions. [2023-12-19 14:11:37,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.391304347826088) internal successors, (308), 23 states have internal predecessors, (308), 6 states have call successors, (152), 4 states have call predecessors, (152), 8 states have return successors, (152), 6 states have call predecessors, (152), 6 states have call successors, (152) [2023-12-19 14:11:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 43979 states and 66342 transitions. [2023-12-19 14:11:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-19 14:11:37,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:11:37,163 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:11:37,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 14:11:37,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 14:11:37,371 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:11:37,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:11:37,372 INFO L85 PathProgramCache]: Analyzing trace with hash 76621204, now seen corresponding path program 1 times [2023-12-19 14:11:37,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:11:37,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811029123] [2023-12-19 14:11:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:37,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:11:37,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:11:37,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080533416] [2023-12-19 14:11:37,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:37,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:37,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:11:37,509 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:11:37,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 14:11:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:11:38,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 14:11:38,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:11:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 3389 proven. 366 refuted. 0 times theorem prover too weak. 7645 trivial. 0 not checked. [2023-12-19 14:11:39,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:11:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 39 proven. 186 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-19 14:11:39,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:11:39,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811029123] [2023-12-19 14:11:39,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:11:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080533416] [2023-12-19 14:11:39,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080533416] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:11:39,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:11:39,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2023-12-19 14:11:39,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696254899] [2023-12-19 14:11:39,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:11:39,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 14:11:39,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:11:39,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 14:11:39,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-19 14:11:39,272 INFO L87 Difference]: Start difference. First operand 43979 states and 66342 transitions. Second operand has 12 states, 12 states have (on average 22.416666666666668) internal successors, (269), 12 states have internal predecessors, (269), 3 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 3 states have call predecessors, (139), 3 states have call successors, (139) [2023-12-19 14:11:43,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:11:43,025 INFO L93 Difference]: Finished difference Result 87139 states and 131309 transitions. [2023-12-19 14:11:43,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 14:11:43,025 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.416666666666668) internal successors, (269), 12 states have internal predecessors, (269), 3 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 3 states have call predecessors, (139), 3 states have call successors, (139) Word has length 528 [2023-12-19 14:11:43,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:11:43,079 INFO L225 Difference]: With dead ends: 87139 [2023-12-19 14:11:43,079 INFO L226 Difference]: Without dead ends: 44345 [2023-12-19 14:11:43,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1065 GetRequests, 1044 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2023-12-19 14:11:43,104 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 467 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:11:43,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 831 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:11:43,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44345 states. [2023-12-19 14:11:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44345 to 43979. [2023-12-19 14:11:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43979 states, 40623 states have (on average 1.4997907589296704) internal successors, (60926), 40695 states have internal predecessors, (60926), 2476 states have call successors, (2476), 879 states have call predecessors, (2476), 879 states have return successors, (2476), 2404 states have call predecessors, (2476), 2476 states have call successors, (2476) [2023-12-19 14:11:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43979 states to 43979 states and 65878 transitions. [2023-12-19 14:11:46,496 INFO L78 Accepts]: Start accepts. Automaton has 43979 states and 65878 transitions. Word has length 528 [2023-12-19 14:11:46,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:11:46,497 INFO L495 AbstractCegarLoop]: Abstraction has 43979 states and 65878 transitions. [2023-12-19 14:11:46,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.416666666666668) internal successors, (269), 12 states have internal predecessors, (269), 3 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 3 states have call predecessors, (139), 3 states have call successors, (139) [2023-12-19 14:11:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 43979 states and 65878 transitions. [2023-12-19 14:11:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-19 14:11:46,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:11:46,506 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:11:46,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 14:11:46,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 14:11:46,715 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:11:46,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:11:46,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1370304285, now seen corresponding path program 1 times [2023-12-19 14:11:46,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:11:46,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935112142] [2023-12-19 14:11:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:46,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:11:46,754 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:11:46,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555877726] [2023-12-19 14:11:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:46,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:46,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:11:46,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:11:46,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 14:11:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:11:47,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 14:11:47,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:11:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 4239 proven. 384 refuted. 0 times theorem prover too weak. 6777 trivial. 0 not checked. [2023-12-19 14:11:48,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:11:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 54 proven. 171 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-19 14:11:49,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:11:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935112142] [2023-12-19 14:11:49,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:11:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555877726] [2023-12-19 14:11:49,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555877726] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:11:49,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:11:49,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-12-19 14:11:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078259845] [2023-12-19 14:11:49,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:11:49,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 14:11:49,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:11:49,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 14:11:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-12-19 14:11:49,257 INFO L87 Difference]: Start difference. First operand 43979 states and 65878 transitions. Second operand has 16 states, 16 states have (on average 18.125) internal successors, (290), 16 states have internal predecessors, (290), 4 states have call successors, (148), 3 states have call predecessors, (148), 6 states have return successors, (149), 4 states have call predecessors, (149), 4 states have call successors, (149) [2023-12-19 14:12:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:12:11,920 INFO L93 Difference]: Finished difference Result 220605 states and 323225 transitions. [2023-12-19 14:12:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-19 14:12:11,921 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.125) internal successors, (290), 16 states have internal predecessors, (290), 4 states have call successors, (148), 3 states have call predecessors, (148), 6 states have return successors, (149), 4 states have call predecessors, (149), 4 states have call successors, (149) Word has length 529 [2023-12-19 14:12:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:12:12,187 INFO L225 Difference]: With dead ends: 220605 [2023-12-19 14:12:12,187 INFO L226 Difference]: Without dead ends: 177811 [2023-12-19 14:12:12,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1138 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2901 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1668, Invalid=6342, Unknown=0, NotChecked=0, Total=8010 [2023-12-19 14:12:12,380 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 3152 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 1042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3153 SdHoareTripleChecker+Valid, 4270 SdHoareTripleChecker+Invalid, 4163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1042 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 14:12:12,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3153 Valid, 4270 Invalid, 4163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1042 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 14:12:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177811 states. [2023-12-19 14:12:18,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177811 to 63223. [2023-12-19 14:12:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63223 states, 57971 states have (on average 1.4805678701419676) internal successors, (85830), 58075 states have internal predecessors, (85830), 3876 states have call successors, (3876), 1375 states have call predecessors, (3876), 1375 states have return successors, (3876), 3772 states have call predecessors, (3876), 3876 states have call successors, (3876) [2023-12-19 14:12:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63223 states to 63223 states and 93582 transitions. [2023-12-19 14:12:18,647 INFO L78 Accepts]: Start accepts. Automaton has 63223 states and 93582 transitions. Word has length 529 [2023-12-19 14:12:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:12:18,647 INFO L495 AbstractCegarLoop]: Abstraction has 63223 states and 93582 transitions. [2023-12-19 14:12:18,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.125) internal successors, (290), 16 states have internal predecessors, (290), 4 states have call successors, (148), 3 states have call predecessors, (148), 6 states have return successors, (149), 4 states have call predecessors, (149), 4 states have call successors, (149) [2023-12-19 14:12:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 63223 states and 93582 transitions. [2023-12-19 14:12:18,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 14:12:18,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:12:18,662 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:12:18,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 14:12:18,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:12:18,865 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:12:18,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:12:18,865 INFO L85 PathProgramCache]: Analyzing trace with hash -539171264, now seen corresponding path program 1 times [2023-12-19 14:12:18,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:12:18,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468878958] [2023-12-19 14:12:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:12:18,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:12:19,026 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:12:19,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746331914] [2023-12-19 14:12:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:12:19,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:12:19,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:12:19,035 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:12:19,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 14:12:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:12:19,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 14:12:19,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:12:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5643 proven. 874 refuted. 0 times theorem prover too weak. 4883 trivial. 0 not checked. [2023-12-19 14:12:21,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:12:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 234 proven. 648 refuted. 0 times theorem prover too weak. 10518 trivial. 0 not checked. [2023-12-19 14:12:22,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:12:22,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468878958] [2023-12-19 14:12:22,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:12:22,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746331914] [2023-12-19 14:12:22,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746331914] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:12:22,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:12:22,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 32 [2023-12-19 14:12:22,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784034999] [2023-12-19 14:12:22,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:12:22,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 14:12:22,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:12:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 14:12:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-12-19 14:12:22,169 INFO L87 Difference]: Start difference. First operand 63223 states and 93582 transitions. Second operand has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 28 states have internal predecessors, (266), 10 states have call successors, (152), 6 states have call predecessors, (152), 12 states have return successors, (152), 10 states have call predecessors, (152), 10 states have call successors, (152) [2023-12-19 14:12:29,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:12:29,492 INFO L93 Difference]: Finished difference Result 126701 states and 187081 transitions. [2023-12-19 14:12:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 14:12:29,493 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 28 states have internal predecessors, (266), 10 states have call successors, (152), 6 states have call predecessors, (152), 12 states have return successors, (152), 10 states have call predecessors, (152), 10 states have call successors, (152) Word has length 530 [2023-12-19 14:12:29,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:12:29,581 INFO L225 Difference]: With dead ends: 126701 [2023-12-19 14:12:29,581 INFO L226 Difference]: Without dead ends: 64075 [2023-12-19 14:12:29,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1032 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=805, Invalid=1745, Unknown=0, NotChecked=0, Total=2550 [2023-12-19 14:12:29,621 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1567 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:12:29,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 1830 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 14:12:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64075 states. [2023-12-19 14:12:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64075 to 59915. [2023-12-19 14:12:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59915 states, 55349 states have (on average 1.4741368407739976) internal successors, (81592), 55429 states have internal predecessors, (81592), 3308 states have call successors, (3308), 1257 states have call predecessors, (3308), 1257 states have return successors, (3308), 3228 states have call predecessors, (3308), 3308 states have call successors, (3308) [2023-12-19 14:12:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59915 states to 59915 states and 88208 transitions. [2023-12-19 14:12:34,724 INFO L78 Accepts]: Start accepts. Automaton has 59915 states and 88208 transitions. Word has length 530 [2023-12-19 14:12:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:12:34,724 INFO L495 AbstractCegarLoop]: Abstraction has 59915 states and 88208 transitions. [2023-12-19 14:12:34,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 28 states have internal predecessors, (266), 10 states have call successors, (152), 6 states have call predecessors, (152), 12 states have return successors, (152), 10 states have call predecessors, (152), 10 states have call successors, (152) [2023-12-19 14:12:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 59915 states and 88208 transitions. [2023-12-19 14:12:34,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 14:12:34,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:12:34,737 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:12:34,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 14:12:34,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:12:34,945 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:12:34,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:12:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1506521918, now seen corresponding path program 1 times [2023-12-19 14:12:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:12:34,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220221297] [2023-12-19 14:12:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:12:34,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:12:34,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:12:34,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320589245] [2023-12-19 14:12:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:12:34,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:12:34,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:12:35,008 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:12:35,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 14:24:34,164 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 14:24:34,167 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 [2023-12-19 14:24:35,365 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forcibly destroying the process [2023-12-19 14:24:35,367 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 14:24:35,381 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-19 14:24:35,382 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 14:24:35,390 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forcibly destroying the process [2023-12-19 14:24:35,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:24:35,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-19 14:24:35,390 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 531 with TraceHistMax 76,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-19 14:24:35,396 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:24:35,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 137 [2023-12-19 14:24:35,412 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 14:24:35,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 02:24:35 BoogieIcfgContainer [2023-12-19 14:24:35,415 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 14:24:35,415 INFO L158 Benchmark]: Toolchain (without parser) took 865088.66ms. Allocated memory was 212.9MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 174.8MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-19 14:24:35,415 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 212.9MB. Free memory is still 171.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 14:24:35,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 469.92ms. Allocated memory is still 212.9MB. Free memory was 174.5MB in the beginning and 136.0MB in the end (delta: 38.5MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-19 14:24:35,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 137.49ms. Allocated memory was 212.9MB in the beginning and 285.2MB in the end (delta: 72.4MB). Free memory was 136.0MB in the beginning and 241.0MB in the end (delta: -105.1MB). Peak memory consumption was 13.8MB. Max. memory is 8.0GB. [2023-12-19 14:24:35,416 INFO L158 Benchmark]: Boogie Preprocessor took 207.38ms. Allocated memory is still 285.2MB. Free memory was 241.0MB in the beginning and 243.4MB in the end (delta: -2.4MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-19 14:24:35,417 INFO L158 Benchmark]: RCFGBuilder took 996.72ms. Allocated memory is still 285.2MB. Free memory was 243.4MB in the beginning and 204.8MB in the end (delta: 38.6MB). Peak memory consumption was 86.1MB. Max. memory is 8.0GB. [2023-12-19 14:24:35,417 INFO L158 Benchmark]: TraceAbstraction took 863272.67ms. Allocated memory was 285.2MB in the beginning and 4.1GB in the end (delta: 3.8GB). Free memory was 204.3MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-19 14:24:35,419 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 212.9MB. Free memory is still 171.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 469.92ms. Allocated memory is still 212.9MB. Free memory was 174.5MB in the beginning and 136.0MB in the end (delta: 38.5MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 137.49ms. Allocated memory was 212.9MB in the beginning and 285.2MB in the end (delta: 72.4MB). Free memory was 136.0MB in the beginning and 241.0MB in the end (delta: -105.1MB). Peak memory consumption was 13.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 207.38ms. Allocated memory is still 285.2MB. Free memory was 241.0MB in the beginning and 243.4MB in the end (delta: -2.4MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * RCFGBuilder took 996.72ms. Allocated memory is still 285.2MB. Free memory was 243.4MB in the beginning and 204.8MB in the end (delta: 38.6MB). Peak memory consumption was 86.1MB. Max. memory is 8.0GB. * TraceAbstraction took 863272.67ms. Allocated memory was 285.2MB in the beginning and 4.1GB in the end (delta: 3.8GB). Free memory was 204.3MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 531 with TraceHistMax 76,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 272 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 863.2s, OverallIterations: 21, TraceHistogramMax: 76, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 75.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35960 SdHoareTripleChecker+Valid, 18.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35776 mSDsluCounter, 40132 SdHoareTripleChecker+Invalid, 15.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30354 mSDsCounter, 7115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23406 IncrementalHoareTripleChecker+Invalid, 30521 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7115 mSolverCounterUnsat, 9778 mSDtfsCounter, 23406 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16811 GetRequests, 16134 SyntacticMatches, 7 SemanticMatches, 670 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24776 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63223occurred in iteration=19, InterpolantAutomatonStates: 551, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 24.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 226250 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 28.0s InterpolantComputationTime, 11060 NumberOfCodeBlocks, 11060 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 16310 ConstructedInterpolants, 0 QuantifiedInterpolants, 96887 SizeOfPredicates, 120 NumberOfNonLiveVariables, 26341 ConjunctsInSsa, 262 ConjunctsInUnsatCore, 31 InterpolantComputations, 9 PerfectInterpolantSequences, 345710/353400 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