/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-13.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 00:26:15,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 00:26:15,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 00:26:15,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 00:26:15,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 00:26:15,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 00:26:15,339 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 00:26:15,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 00:26:15,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 00:26:15,344 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 00:26:15,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 00:26:15,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 00:26:15,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 00:26:15,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 00:26:15,346 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 00:26:15,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 00:26:15,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 00:26:15,346 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 00:26:15,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 00:26:15,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 00:26:15,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 00:26:15,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 00:26:15,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 00:26:15,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 00:26:15,347 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 00:26:15,348 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 00:26:15,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 00:26:15,348 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 00:26:15,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 00:26:15,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 00:26:15,349 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 00:26:15,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 00:26:15,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 00:26:15,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 00:26:15,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 00:26:15,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 00:26:15,350 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 00:26:15,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 00:26:15,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 00:26:15,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 00:26:15,351 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 00:26:15,351 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 00:26:15,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 00:26:15,352 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 00:26:15,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 00:26:15,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 00:26:15,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 00:26:15,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 00:26:15,614 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 00:26:15,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-13.i [2023-12-21 00:26:16,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 00:26:17,091 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 00:26:17,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-13.i [2023-12-21 00:26:17,119 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083bb40eb/5ad626b4bc874b7d9427ca977f1d2d97/FLAGe43721dc1 [2023-12-21 00:26:17,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083bb40eb/5ad626b4bc874b7d9427ca977f1d2d97 [2023-12-21 00:26:17,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 00:26:17,135 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 00:26:17,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 00:26:17,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 00:26:17,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 00:26:17,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:17,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4d2a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17, skipping insertion in model container [2023-12-21 00:26:17,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:17,228 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 00:26:17,360 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-13.i[916,929] [2023-12-21 00:26:17,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 00:26:17,595 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 00:26:17,604 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-13.i[916,929] [2023-12-21 00:26:17,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 00:26:17,707 INFO L206 MainTranslator]: Completed translation [2023-12-21 00:26:17,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17 WrapperNode [2023-12-21 00:26:17,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 00:26:17,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 00:26:17,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 00:26:17,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 00:26:17,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:17,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:17,851 INFO L138 Inliner]: procedures = 26, calls = 92, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 675 [2023-12-21 00:26:17,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 00:26:17,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 00:26:17,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 00:26:17,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 00:26:17,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:17,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:17,944 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:18,031 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]. [2023-12-21 00:26:18,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:18,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:18,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:18,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:18,133 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:18,140 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:18,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 00:26:18,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 00:26:18,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 00:26:18,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 00:26:18,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (1/1) ... [2023-12-21 00:26:18,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 00:26:18,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:26:18,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 00:26:18,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 00:26:18,208 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 00:26:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 00:26:18,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 00:26:18,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 00:26:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 00:26:18,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 00:26:18,347 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 00:26:18,349 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 00:26:19,261 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 00:26:19,318 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 00:26:19,318 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 00:26:19,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:26:19 BoogieIcfgContainer [2023-12-21 00:26:19,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 00:26:19,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 00:26:19,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 00:26:19,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 00:26:19,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:26:17" (1/3) ... [2023-12-21 00:26:19,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8a08f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:26:19, skipping insertion in model container [2023-12-21 00:26:19,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:17" (2/3) ... [2023-12-21 00:26:19,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8a08f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:26:19, skipping insertion in model container [2023-12-21 00:26:19,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:26:19" (3/3) ... [2023-12-21 00:26:19,326 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-13.i [2023-12-21 00:26:19,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 00:26:19,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 00:26:19,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 00:26:19,384 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;@17656240, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 00:26:19,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 00:26:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 178 states have (on average 1.5674157303370786) internal successors, (279), 179 states have internal predecessors, (279), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-21 00:26:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-21 00:26:19,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:26:19,423 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:26:19,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:26:19,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:26:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash -756514692, now seen corresponding path program 1 times [2023-12-21 00:26:19,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:26:19,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771593840] [2023-12-21 00:26:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:26:19,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:26:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:26:19,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:26:19,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771593840] [2023-12-21 00:26:19,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 00:26:19,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314373080] [2023-12-21 00:26:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:26:19,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:26:19,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:26:19,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:26:19,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 00:26:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:26:20,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 00:26:20,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:26:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2023-12-21 00:26:20,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:26:20,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314373080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:26:20,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:26:20,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 00:26:20,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020926463] [2023-12-21 00:26:20,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:26:20,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 00:26:20,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:26:20,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 00:26:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 00:26:20,296 INFO L87 Difference]: Start difference. First operand has 260 states, 178 states have (on average 1.5674157303370786) internal successors, (279), 179 states have internal predecessors, (279), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-21 00:26:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:26:20,351 INFO L93 Difference]: Finished difference Result 515 states and 947 transitions. [2023-12-21 00:26:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 00:26:20,357 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) Word has length 525 [2023-12-21 00:26:20,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:26:20,368 INFO L225 Difference]: With dead ends: 515 [2023-12-21 00:26:20,369 INFO L226 Difference]: Without dead ends: 256 [2023-12-21 00:26:20,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 00:26:20,376 INFO L413 NwaCegarLoop]: 424 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, 424 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 [2023-12-21 00:26:20,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 00:26:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-21 00:26:20,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-12-21 00:26:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 175 states have (on average 1.5371428571428571) internal successors, (269), 175 states have internal predecessors, (269), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-21 00:26:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 427 transitions. [2023-12-21 00:26:20,429 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 427 transitions. Word has length 525 [2023-12-21 00:26:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:26:20,430 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 427 transitions. [2023-12-21 00:26:20,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-21 00:26:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 427 transitions. [2023-12-21 00:26:20,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-21 00:26:20,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:26:20,440 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:26:20,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 00:26:20,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 00:26:20,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:26:20,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:26:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash 714676142, now seen corresponding path program 1 times [2023-12-21 00:26:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:26:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394217546] [2023-12-21 00:26:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:26:20,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:26:20,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:26:20,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042571632] [2023-12-21 00:26:20,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:26:20,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:26:20,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:26:20,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:26:20,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 00:26:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:26:21,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 00:26:21,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:26:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:26:21,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:26:21,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:26:21,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394217546] [2023-12-21 00:26:21,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:26:21,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042571632] [2023-12-21 00:26:21,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042571632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:26:21,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:26:21,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:26:21,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370137732] [2023-12-21 00:26:21,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:26:21,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:26:21,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:26:21,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:26:21,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:26:21,192 INFO L87 Difference]: Start difference. First operand 256 states and 427 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:26:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:26:21,294 INFO L93 Difference]: Finished difference Result 519 states and 864 transitions. [2023-12-21 00:26:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 00:26:21,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 525 [2023-12-21 00:26:21,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:26:21,299 INFO L225 Difference]: With dead ends: 519 [2023-12-21 00:26:21,299 INFO L226 Difference]: Without dead ends: 264 [2023-12-21 00:26:21,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:26:21,301 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 12 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 00:26:21,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1260 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 00:26:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-21 00:26:21,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 258. [2023-12-21 00:26:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 177 states have (on average 1.5310734463276836) internal successors, (271), 177 states have internal predecessors, (271), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-21 00:26:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 429 transitions. [2023-12-21 00:26:21,322 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 429 transitions. Word has length 525 [2023-12-21 00:26:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:26:21,324 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 429 transitions. [2023-12-21 00:26:21,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:26:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 429 transitions. [2023-12-21 00:26:21,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-21 00:26:21,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:26:21,329 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:26:21,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 00:26:21,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 00:26:21,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:26:21,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:26:21,541 INFO L85 PathProgramCache]: Analyzing trace with hash 771934444, now seen corresponding path program 1 times [2023-12-21 00:26:21,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:26:21,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787388795] [2023-12-21 00:26:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:26:21,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:26:21,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:26:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596796389] [2023-12-21 00:26:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:26:21,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:26:21,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:26:21,623 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:26:21,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 00:26:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:26:21,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 00:26:22,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:27:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:27:54,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:27:54,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:27:54,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787388795] [2023-12-21 00:27:54,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:27:54,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596796389] [2023-12-21 00:27:54,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596796389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:27:54,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:27:54,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:27:54,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434139148] [2023-12-21 00:27:54,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:27:54,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:27:54,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:27:54,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:27:54,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:27:54,443 INFO L87 Difference]: Start difference. First operand 258 states and 429 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:27:58,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 00:27:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:27:58,536 INFO L93 Difference]: Finished difference Result 519 states and 862 transitions. [2023-12-21 00:27:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 00:27:58,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 525 [2023-12-21 00:27:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:27:58,539 INFO L225 Difference]: With dead ends: 519 [2023-12-21 00:27:58,539 INFO L226 Difference]: Without dead ends: 262 [2023-12-21 00:27:58,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:27:58,541 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 3 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-21 00:27:58,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1261 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-12-21 00:27:58,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-21 00:27:58,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2023-12-21 00:27:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 179 states have (on average 1.5251396648044693) internal successors, (273), 179 states have internal predecessors, (273), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-21 00:27:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 431 transitions. [2023-12-21 00:27:58,562 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 431 transitions. Word has length 525 [2023-12-21 00:27:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:27:58,564 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 431 transitions. [2023-12-21 00:27:58,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:27:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 431 transitions. [2023-12-21 00:27:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-21 00:27:58,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:27:58,569 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:27:58,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 00:27:58,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:27:58,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:27:58,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:27:58,783 INFO L85 PathProgramCache]: Analyzing trace with hash 771994026, now seen corresponding path program 1 times [2023-12-21 00:27:58,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:27:58,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322905728] [2023-12-21 00:27:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:27:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:27:58,875 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:27:58,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198175329] [2023-12-21 00:27:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:27:58,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:27:58,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:27:58,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:27:58,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 00:27:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:27:59,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 00:27:59,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:27:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:27:59,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:27:59,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:27:59,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322905728] [2023-12-21 00:27:59,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:27:59,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198175329] [2023-12-21 00:27:59,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198175329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:27:59,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:27:59,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:27:59,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185793722] [2023-12-21 00:27:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:27:59,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 00:27:59,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:27:59,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 00:27:59,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:27:59,662 INFO L87 Difference]: Start difference. First operand 260 states and 431 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:27:59,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:27:59,996 INFO L93 Difference]: Finished difference Result 779 states and 1292 transitions. [2023-12-21 00:27:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 00:27:59,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 525 [2023-12-21 00:27:59,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:00,002 INFO L225 Difference]: With dead ends: 779 [2023-12-21 00:28:00,002 INFO L226 Difference]: Without dead ends: 520 [2023-12-21 00:28:00,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:28:00,005 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 511 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:00,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1337 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 00:28:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-21 00:28:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 392. [2023-12-21 00:28:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 231 states have (on average 1.4155844155844155) internal successors, (327), 231 states have internal predecessors, (327), 158 states have call successors, (158), 2 states have call predecessors, (158), 2 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-21 00:28:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 643 transitions. [2023-12-21 00:28:00,069 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 643 transitions. Word has length 525 [2023-12-21 00:28:00,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:00,070 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 643 transitions. [2023-12-21 00:28:00,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 643 transitions. [2023-12-21 00:28:00,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-21 00:28:00,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:00,073 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:00,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:00,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:00,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:00,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:00,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1760442260, now seen corresponding path program 1 times [2023-12-21 00:28:00,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:00,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303704] [2023-12-21 00:28:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:00,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:00,364 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:00,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923789587] [2023-12-21 00:28:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:00,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:00,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:00,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:00,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 00:28:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:00,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 00:28:00,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:00,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:00,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:00,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303704] [2023-12-21 00:28:00,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:00,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923789587] [2023-12-21 00:28:00,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923789587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:00,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:00,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 00:28:00,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054091725] [2023-12-21 00:28:00,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:00,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 00:28:00,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:00,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 00:28:00,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:28:00,761 INFO L87 Difference]: Start difference. First operand 392 states and 643 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:00,835 INFO L93 Difference]: Finished difference Result 806 states and 1326 transitions. [2023-12-21 00:28:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 00:28:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 526 [2023-12-21 00:28:00,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:00,840 INFO L225 Difference]: With dead ends: 806 [2023-12-21 00:28:00,840 INFO L226 Difference]: Without dead ends: 547 [2023-12-21 00:28:00,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:28:00,842 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 228 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:00,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 820 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 00:28:00,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-12-21 00:28:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 544. [2023-12-21 00:28:00,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 365 states have (on average 1.484931506849315) internal successors, (542), 366 states have internal predecessors, (542), 174 states have call successors, (174), 4 states have call predecessors, (174), 4 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-21 00:28:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 890 transitions. [2023-12-21 00:28:00,883 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 890 transitions. Word has length 526 [2023-12-21 00:28:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:00,888 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 890 transitions. [2023-12-21 00:28:00,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 890 transitions. [2023-12-21 00:28:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-21 00:28:00,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:00,897 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:00,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:01,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:01,107 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:01,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:01,108 INFO L85 PathProgramCache]: Analyzing trace with hash -42809556, now seen corresponding path program 1 times [2023-12-21 00:28:01,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:01,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242036619] [2023-12-21 00:28:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:01,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:01,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739295276] [2023-12-21 00:28:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:01,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:01,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:01,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:01,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 00:28:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:01,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 00:28:01,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:01,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:01,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:01,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242036619] [2023-12-21 00:28:01,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:01,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739295276] [2023-12-21 00:28:01,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739295276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:01,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:01,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 00:28:01,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152803515] [2023-12-21 00:28:01,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:01,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 00:28:01,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 00:28:01,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:28:01,853 INFO L87 Difference]: Start difference. First operand 544 states and 890 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:01,934 INFO L93 Difference]: Finished difference Result 1352 states and 2227 transitions. [2023-12-21 00:28:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 00:28:01,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 526 [2023-12-21 00:28:01,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:01,943 INFO L225 Difference]: With dead ends: 1352 [2023-12-21 00:28:01,943 INFO L226 Difference]: Without dead ends: 945 [2023-12-21 00:28:01,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:28:01,945 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 396 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:01,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 817 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 00:28:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-12-21 00:28:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 943. [2023-12-21 00:28:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 667 states have (on average 1.5052473763118441) internal successors, (1004), 669 states have internal predecessors, (1004), 269 states have call successors, (269), 6 states have call predecessors, (269), 6 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-12-21 00:28:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1542 transitions. [2023-12-21 00:28:01,987 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1542 transitions. Word has length 526 [2023-12-21 00:28:01,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:01,987 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1542 transitions. [2023-12-21 00:28:01,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1542 transitions. [2023-12-21 00:28:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-21 00:28:01,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:01,994 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:02,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 00:28:02,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:02,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:02,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1372150436, now seen corresponding path program 1 times [2023-12-21 00:28:02,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:02,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100481447] [2023-12-21 00:28:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:02,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:02,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:02,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621700020] [2023-12-21 00:28:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:02,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:02,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:02,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:02,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 00:28:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:02,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 00:28:02,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:02,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:02,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:02,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:02,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100481447] [2023-12-21 00:28:02,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:02,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621700020] [2023-12-21 00:28:02,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621700020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:02,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:02,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 00:28:02,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421294202] [2023-12-21 00:28:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:02,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 00:28:02,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:02,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 00:28:02,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:28:02,646 INFO L87 Difference]: Start difference. First operand 943 states and 1542 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:02,735 INFO L93 Difference]: Finished difference Result 1751 states and 2869 transitions. [2023-12-21 00:28:02,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 00:28:02,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-12-21 00:28:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:02,744 INFO L225 Difference]: With dead ends: 1751 [2023-12-21 00:28:02,748 INFO L226 Difference]: Without dead ends: 945 [2023-12-21 00:28:02,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:28:02,751 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 418 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:02,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1082 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 00:28:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-12-21 00:28:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 943. [2023-12-21 00:28:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 667 states have (on average 1.4902548725637181) internal successors, (994), 669 states have internal predecessors, (994), 269 states have call successors, (269), 6 states have call predecessors, (269), 6 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-12-21 00:28:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1532 transitions. [2023-12-21 00:28:02,791 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1532 transitions. Word has length 527 [2023-12-21 00:28:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:02,791 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1532 transitions. [2023-12-21 00:28:02,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1532 transitions. [2023-12-21 00:28:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-21 00:28:02,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:02,795 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:02,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:03,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:03,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:03,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:03,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1095373542, now seen corresponding path program 1 times [2023-12-21 00:28:03,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:03,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8478553] [2023-12-21 00:28:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:03,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:03,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:03,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281626317] [2023-12-21 00:28:03,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:03,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:03,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:03,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:03,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 00:28:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:03,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 00:28:03,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:07,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:07,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:07,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8478553] [2023-12-21 00:28:07,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:07,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281626317] [2023-12-21 00:28:07,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281626317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:07,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:07,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 00:28:07,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878070303] [2023-12-21 00:28:07,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:07,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 00:28:07,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:07,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 00:28:07,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:28:07,408 INFO L87 Difference]: Start difference. First operand 943 states and 1532 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:09,062 INFO L93 Difference]: Finished difference Result 1846 states and 2992 transitions. [2023-12-21 00:28:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 00:28:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-12-21 00:28:09,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:09,071 INFO L225 Difference]: With dead ends: 1846 [2023-12-21 00:28:09,071 INFO L226 Difference]: Without dead ends: 1441 [2023-12-21 00:28:09,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:28:09,076 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 927 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:09,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 2589 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 00:28:09,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2023-12-21 00:28:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1103. [2023-12-21 00:28:09,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 827 states have (on average 1.528415961305925) internal successors, (1264), 829 states have internal predecessors, (1264), 269 states have call successors, (269), 6 states have call predecessors, (269), 6 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-12-21 00:28:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1802 transitions. [2023-12-21 00:28:09,204 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1802 transitions. Word has length 527 [2023-12-21 00:28:09,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:09,205 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1802 transitions. [2023-12-21 00:28:09,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:09,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1802 transitions. [2023-12-21 00:28:09,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-21 00:28:09,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:09,211 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:09,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 00:28:09,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-21 00:28:09,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:09,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash -661644456, now seen corresponding path program 1 times [2023-12-21 00:28:09,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:09,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62732199] [2023-12-21 00:28:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:09,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:09,571 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:09,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646892531] [2023-12-21 00:28:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:09,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:09,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:09,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:09,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 00:28:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:10,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 00:28:10,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:10,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:10,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:10,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62732199] [2023-12-21 00:28:10,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:10,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646892531] [2023-12-21 00:28:10,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646892531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:10,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:10,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:28:10,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460435904] [2023-12-21 00:28:10,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:10,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:28:10,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:28:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:28:10,198 INFO L87 Difference]: Start difference. First operand 1103 states and 1802 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:10,307 INFO L93 Difference]: Finished difference Result 3005 states and 4920 transitions. [2023-12-21 00:28:10,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 00:28:10,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-12-21 00:28:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:10,317 INFO L225 Difference]: With dead ends: 3005 [2023-12-21 00:28:10,317 INFO L226 Difference]: Without dead ends: 2039 [2023-12-21 00:28:10,324 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 [2023-12-21 00:28:10,325 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 429 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:10,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1249 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 00:28:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2023-12-21 00:28:10,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1355. [2023-12-21 00:28:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1079 states have (on average 1.5607043558850788) internal successors, (1684), 1081 states have internal predecessors, (1684), 269 states have call successors, (269), 6 states have call predecessors, (269), 6 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-12-21 00:28:10,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 2222 transitions. [2023-12-21 00:28:10,505 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 2222 transitions. Word has length 527 [2023-12-21 00:28:10,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:10,505 INFO L495 AbstractCegarLoop]: Abstraction has 1355 states and 2222 transitions. [2023-12-21 00:28:10,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 2222 transitions. [2023-12-21 00:28:10,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-21 00:28:10,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:10,512 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:10,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:10,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:10,723 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:10,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:10,724 INFO L85 PathProgramCache]: Analyzing trace with hash -12780456, now seen corresponding path program 1 times [2023-12-21 00:28:10,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:10,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212623069] [2023-12-21 00:28:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:10,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:10,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054298850] [2023-12-21 00:28:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:10,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:10,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:10,917 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:10,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 00:28:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:11,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 00:28:11,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:11,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:11,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212623069] [2023-12-21 00:28:11,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054298850] [2023-12-21 00:28:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054298850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:11,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:11,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 00:28:11,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436159998] [2023-12-21 00:28:11,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:11,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 00:28:11,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:11,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 00:28:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:28:11,537 INFO L87 Difference]: Start difference. First operand 1355 states and 2222 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:12,684 INFO L93 Difference]: Finished difference Result 4644 states and 7579 transitions. [2023-12-21 00:28:12,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 00:28:12,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-12-21 00:28:12,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:12,718 INFO L225 Difference]: With dead ends: 4644 [2023-12-21 00:28:12,718 INFO L226 Difference]: Without dead ends: 3426 [2023-12-21 00:28:12,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 00:28:12,721 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1048 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:12,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1904 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 00:28:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2023-12-21 00:28:13,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 2873. [2023-12-21 00:28:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2416 states have (on average 1.5662251655629138) internal successors, (3784), 2424 states have internal predecessors, (3784), 441 states have call successors, (441), 15 states have call predecessors, (441), 15 states have return successors, (441), 433 states have call predecessors, (441), 441 states have call successors, (441) [2023-12-21 00:28:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4666 transitions. [2023-12-21 00:28:13,088 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4666 transitions. Word has length 527 [2023-12-21 00:28:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:13,088 INFO L495 AbstractCegarLoop]: Abstraction has 2873 states and 4666 transitions. [2023-12-21 00:28:13,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:13,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4666 transitions. [2023-12-21 00:28:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-21 00:28:13,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:13,113 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:13,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:13,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 00:28:13,329 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:13,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash -28299174, now seen corresponding path program 1 times [2023-12-21 00:28:13,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:13,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732134551] [2023-12-21 00:28:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:13,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:13,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:13,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125154731] [2023-12-21 00:28:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:13,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:13,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:13,461 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:13,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 00:28:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:14,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 00:28:14,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:15,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:15,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:15,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732134551] [2023-12-21 00:28:15,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:15,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125154731] [2023-12-21 00:28:15,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125154731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:15,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:15,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 00:28:15,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213137314] [2023-12-21 00:28:15,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:15,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:28:15,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:15,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:28:15,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:28:15,454 INFO L87 Difference]: Start difference. First operand 2873 states and 4666 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:18,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 00:28:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:20,353 INFO L93 Difference]: Finished difference Result 6349 states and 10332 transitions. [2023-12-21 00:28:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 00:28:20,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-12-21 00:28:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:20,395 INFO L225 Difference]: With dead ends: 6349 [2023-12-21 00:28:20,395 INFO L226 Difference]: Without dead ends: 3617 [2023-12-21 00:28:20,412 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 [2023-12-21 00:28:20,412 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 276 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:20,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1233 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-21 00:28:20,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2023-12-21 00:28:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 2894. [2023-12-21 00:28:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2894 states, 2437 states have (on average 1.5654493229380386) internal successors, (3815), 2445 states have internal predecessors, (3815), 441 states have call successors, (441), 15 states have call predecessors, (441), 15 states have return successors, (441), 433 states have call predecessors, (441), 441 states have call successors, (441) [2023-12-21 00:28:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 4697 transitions. [2023-12-21 00:28:21,074 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 4697 transitions. Word has length 527 [2023-12-21 00:28:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:21,075 INFO L495 AbstractCegarLoop]: Abstraction has 2894 states and 4697 transitions. [2023-12-21 00:28:21,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 4697 transitions. [2023-12-21 00:28:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-21 00:28:21,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:21,088 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:21,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-21 00:28:21,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 00:28:21,313 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:23,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2049231832, now seen corresponding path program 1 times [2023-12-21 00:28:23,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:23,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948183753] [2023-12-21 00:28:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:23,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:23,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:23,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866859801] [2023-12-21 00:28:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:23,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:23,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:23,275 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:23,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 00:28:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:24,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 00:28:24,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:27,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:27,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:27,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948183753] [2023-12-21 00:28:27,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:27,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866859801] [2023-12-21 00:28:27,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866859801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:27,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:27,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 00:28:27,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559942122] [2023-12-21 00:28:27,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:27,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 00:28:27,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:27,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 00:28:27,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:28:27,514 INFO L87 Difference]: Start difference. First operand 2894 states and 4697 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:27,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:27,941 INFO L93 Difference]: Finished difference Result 9835 states and 15961 transitions. [2023-12-21 00:28:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 00:28:27,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-12-21 00:28:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:27,962 INFO L225 Difference]: With dead ends: 9835 [2023-12-21 00:28:27,962 INFO L226 Difference]: Without dead ends: 7103 [2023-12-21 00:28:27,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:28:27,968 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 927 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:27,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 1724 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 00:28:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7103 states. [2023-12-21 00:28:28,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7103 to 3523. [2023-12-21 00:28:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3523 states, 3066 states have (on average 1.5857795172863667) internal successors, (4862), 3074 states have internal predecessors, (4862), 441 states have call successors, (441), 15 states have call predecessors, (441), 15 states have return successors, (441), 433 states have call predecessors, (441), 441 states have call successors, (441) [2023-12-21 00:28:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3523 states to 3523 states and 5744 transitions. [2023-12-21 00:28:28,110 INFO L78 Accepts]: Start accepts. Automaton has 3523 states and 5744 transitions. Word has length 527 [2023-12-21 00:28:28,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:28,110 INFO L495 AbstractCegarLoop]: Abstraction has 3523 states and 5744 transitions. [2023-12-21 00:28:28,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:28,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3523 states and 5744 transitions. [2023-12-21 00:28:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-21 00:28:28,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:28,114 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:28,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:28,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 00:28:28,322 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:28,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1488532054, now seen corresponding path program 1 times [2023-12-21 00:28:28,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:28,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507005898] [2023-12-21 00:28:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:28,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:28,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:28,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638146369] [2023-12-21 00:28:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:28,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:28,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:28,373 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:28,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 00:28:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:28,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 00:28:28,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:29,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:29,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:29,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507005898] [2023-12-21 00:28:29,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:29,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638146369] [2023-12-21 00:28:29,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638146369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:29,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:29,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 00:28:29,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063024642] [2023-12-21 00:28:29,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:29,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 00:28:29,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:29,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 00:28:29,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:28:29,153 INFO L87 Difference]: Start difference. First operand 3523 states and 5744 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:29,498 INFO L93 Difference]: Finished difference Result 10431 states and 17052 transitions. [2023-12-21 00:28:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 00:28:29,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-12-21 00:28:29,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:29,516 INFO L225 Difference]: With dead ends: 10431 [2023-12-21 00:28:29,516 INFO L226 Difference]: Without dead ends: 7060 [2023-12-21 00:28:29,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:28:29,522 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 971 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:29,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2083 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 00:28:29,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7060 states. [2023-12-21 00:28:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7060 to 3737. [2023-12-21 00:28:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3280 states have (on average 1.5835365853658536) internal successors, (5194), 3288 states have internal predecessors, (5194), 441 states have call successors, (441), 15 states have call predecessors, (441), 15 states have return successors, (441), 433 states have call predecessors, (441), 441 states have call successors, (441) [2023-12-21 00:28:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 6076 transitions. [2023-12-21 00:28:29,764 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 6076 transitions. Word has length 527 [2023-12-21 00:28:29,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:29,764 INFO L495 AbstractCegarLoop]: Abstraction has 3737 states and 6076 transitions. [2023-12-21 00:28:29,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 6076 transitions. [2023-12-21 00:28:29,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-21 00:28:29,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:29,770 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:29,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:29,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 00:28:29,978 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:29,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1261377048, now seen corresponding path program 1 times [2023-12-21 00:28:29,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:29,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897680397] [2023-12-21 00:28:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:30,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:30,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984276090] [2023-12-21 00:28:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:30,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:30,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:30,039 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:30,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 00:28:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:30,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 00:28:30,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:30,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:30,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:30,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897680397] [2023-12-21 00:28:30,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:30,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984276090] [2023-12-21 00:28:30,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984276090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:30,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:30,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:28:30,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823073773] [2023-12-21 00:28:30,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:30,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:28:30,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:28:30,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:28:30,476 INFO L87 Difference]: Start difference. First operand 3737 states and 6076 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:30,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:30,702 INFO L93 Difference]: Finished difference Result 13450 states and 21855 transitions. [2023-12-21 00:28:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 00:28:30,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-12-21 00:28:30,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:30,719 INFO L225 Difference]: With dead ends: 13450 [2023-12-21 00:28:30,719 INFO L226 Difference]: Without dead ends: 9865 [2023-12-21 00:28:30,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:28:30,726 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 434 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:30,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1246 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 00:28:30,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2023-12-21 00:28:30,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 7118. [2023-12-21 00:28:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7118 states, 6464 states have (on average 1.5874071782178218) internal successors, (10261), 6482 states have internal predecessors, (10261), 625 states have call successors, (625), 28 states have call predecessors, (625), 28 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-21 00:28:30,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 11511 transitions. [2023-12-21 00:28:30,926 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 11511 transitions. Word has length 527 [2023-12-21 00:28:30,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:30,927 INFO L495 AbstractCegarLoop]: Abstraction has 7118 states and 11511 transitions. [2023-12-21 00:28:30,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:30,928 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 11511 transitions. [2023-12-21 00:28:30,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-21 00:28:30,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:30,935 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:30,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:31,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:31,142 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:31,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash -227614804, now seen corresponding path program 1 times [2023-12-21 00:28:31,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:31,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431596494] [2023-12-21 00:28:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:31,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:31,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:31,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787514121] [2023-12-21 00:28:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:31,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:31,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:31,217 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:31,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 00:28:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:31,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 00:28:31,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:34,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:34,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:34,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431596494] [2023-12-21 00:28:34,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:34,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787514121] [2023-12-21 00:28:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787514121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:34,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 00:28:34,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262688258] [2023-12-21 00:28:34,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:34,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 00:28:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:34,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 00:28:34,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-21 00:28:34,588 INFO L87 Difference]: Start difference. First operand 7118 states and 11511 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:35,217 INFO L93 Difference]: Finished difference Result 23622 states and 38241 transitions. [2023-12-21 00:28:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 00:28:35,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-12-21 00:28:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:35,297 INFO L225 Difference]: With dead ends: 23622 [2023-12-21 00:28:35,297 INFO L226 Difference]: Without dead ends: 16662 [2023-12-21 00:28:35,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-21 00:28:35,308 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 745 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:35,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 2426 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 00:28:35,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16662 states. [2023-12-21 00:28:35,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16662 to 6984. [2023-12-21 00:28:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6984 states, 6330 states have (on average 1.5894154818325434) internal successors, (10061), 6348 states have internal predecessors, (10061), 625 states have call successors, (625), 28 states have call predecessors, (625), 28 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-21 00:28:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6984 states to 6984 states and 11311 transitions. [2023-12-21 00:28:35,517 INFO L78 Accepts]: Start accepts. Automaton has 6984 states and 11311 transitions. Word has length 527 [2023-12-21 00:28:35,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:35,518 INFO L495 AbstractCegarLoop]: Abstraction has 6984 states and 11311 transitions. [2023-12-21 00:28:35,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 6984 states and 11311 transitions. [2023-12-21 00:28:35,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-21 00:28:35,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:35,524 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:35,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:35,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 00:28:35,732 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:35,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:35,732 INFO L85 PathProgramCache]: Analyzing trace with hash 179776330, now seen corresponding path program 1 times [2023-12-21 00:28:35,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:35,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575477281] [2023-12-21 00:28:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:35,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:35,793 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:35,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56726070] [2023-12-21 00:28:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:35,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:35,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:35,809 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:35,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 00:28:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:36,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 00:28:36,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:36,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:36,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:36,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575477281] [2023-12-21 00:28:36,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:36,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56726070] [2023-12-21 00:28:36,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56726070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:36,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:36,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 00:28:36,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103139579] [2023-12-21 00:28:36,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:36,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 00:28:36,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:36,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 00:28:36,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:28:36,257 INFO L87 Difference]: Start difference. First operand 6984 states and 11311 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:36,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:36,509 INFO L93 Difference]: Finished difference Result 18282 states and 29543 transitions. [2023-12-21 00:28:36,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 00:28:36,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 528 [2023-12-21 00:28:36,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:36,529 INFO L225 Difference]: With dead ends: 18282 [2023-12-21 00:28:36,529 INFO L226 Difference]: Without dead ends: 11456 [2023-12-21 00:28:36,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:28:36,540 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 402 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:36,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 937 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 00:28:36,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11456 states. [2023-12-21 00:28:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11456 to 7224. [2023-12-21 00:28:36,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7224 states, 6570 states have (on average 1.582800608828006) internal successors, (10399), 6588 states have internal predecessors, (10399), 625 states have call successors, (625), 28 states have call predecessors, (625), 28 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-21 00:28:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7224 states to 7224 states and 11649 transitions. [2023-12-21 00:28:36,833 INFO L78 Accepts]: Start accepts. Automaton has 7224 states and 11649 transitions. Word has length 528 [2023-12-21 00:28:36,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:36,833 INFO L495 AbstractCegarLoop]: Abstraction has 7224 states and 11649 transitions. [2023-12-21 00:28:36,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:36,833 INFO L276 IsEmpty]: Start isEmpty. Operand 7224 states and 11649 transitions. [2023-12-21 00:28:36,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-21 00:28:36,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:36,839 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:36,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:37,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 00:28:37,048 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:37,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:37,049 INFO L85 PathProgramCache]: Analyzing trace with hash 427922824, now seen corresponding path program 1 times [2023-12-21 00:28:37,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:37,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22208751] [2023-12-21 00:28:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:37,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:37,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:37,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574189118] [2023-12-21 00:28:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:37,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:37,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:37,089 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:37,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 00:28:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:37,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 00:28:37,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:39,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:39,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:39,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:39,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22208751] [2023-12-21 00:28:39,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:39,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574189118] [2023-12-21 00:28:39,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574189118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:39,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:39,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 00:28:39,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036953805] [2023-12-21 00:28:39,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:39,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 00:28:39,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:39,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 00:28:39,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 00:28:39,290 INFO L87 Difference]: Start difference. First operand 7224 states and 11649 transitions. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:39,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:39,913 INFO L93 Difference]: Finished difference Result 28676 states and 46283 transitions. [2023-12-21 00:28:39,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 00:28:39,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 528 [2023-12-21 00:28:39,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:39,945 INFO L225 Difference]: With dead ends: 28676 [2023-12-21 00:28:39,946 INFO L226 Difference]: Without dead ends: 21610 [2023-12-21 00:28:39,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2023-12-21 00:28:39,956 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 971 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:39,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2636 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 00:28:39,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21610 states. [2023-12-21 00:28:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21610 to 8532. [2023-12-21 00:28:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8532 states, 7878 states have (on average 1.5752729119065754) internal successors, (12410), 7896 states have internal predecessors, (12410), 625 states have call successors, (625), 28 states have call predecessors, (625), 28 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-21 00:28:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8532 states to 8532 states and 13660 transitions. [2023-12-21 00:28:40,235 INFO L78 Accepts]: Start accepts. Automaton has 8532 states and 13660 transitions. Word has length 528 [2023-12-21 00:28:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:40,236 INFO L495 AbstractCegarLoop]: Abstraction has 8532 states and 13660 transitions. [2023-12-21 00:28:40,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8532 states and 13660 transitions. [2023-12-21 00:28:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-21 00:28:40,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:40,244 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:40,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:40,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 00:28:40,453 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:40,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash 629746758, now seen corresponding path program 1 times [2023-12-21 00:28:40,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:40,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480848135] [2023-12-21 00:28:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:40,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:40,495 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:40,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039539115] [2023-12-21 00:28:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:40,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:40,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:40,513 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:40,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 00:28:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:40,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 00:28:40,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:42,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:42,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:42,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480848135] [2023-12-21 00:28:42,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:42,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039539115] [2023-12-21 00:28:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039539115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:42,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:42,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 00:28:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162927479] [2023-12-21 00:28:42,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:42,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 00:28:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 00:28:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-21 00:28:42,284 INFO L87 Difference]: Start difference. First operand 8532 states and 13660 transitions. Second operand has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 9 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:42,930 INFO L93 Difference]: Finished difference Result 29924 states and 48100 transitions. [2023-12-21 00:28:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 00:28:42,931 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 9 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 528 [2023-12-21 00:28:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:42,964 INFO L225 Difference]: With dead ends: 29924 [2023-12-21 00:28:42,964 INFO L226 Difference]: Without dead ends: 21550 [2023-12-21 00:28:42,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2023-12-21 00:28:42,977 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 960 mSDsluCounter, 2511 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:42,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 3148 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 00:28:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21550 states. [2023-12-21 00:28:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21550 to 8532. [2023-12-21 00:28:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8532 states, 7878 states have (on average 1.5752729119065754) internal successors, (12410), 7896 states have internal predecessors, (12410), 625 states have call successors, (625), 28 states have call predecessors, (625), 28 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-21 00:28:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8532 states to 8532 states and 13660 transitions. [2023-12-21 00:28:43,222 INFO L78 Accepts]: Start accepts. Automaton has 8532 states and 13660 transitions. Word has length 528 [2023-12-21 00:28:43,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:43,223 INFO L495 AbstractCegarLoop]: Abstraction has 8532 states and 13660 transitions. [2023-12-21 00:28:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 9 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 8532 states and 13660 transitions. [2023-12-21 00:28:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-21 00:28:43,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:43,232 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:43,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:43,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 00:28:43,441 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:43,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:43,441 INFO L85 PathProgramCache]: Analyzing trace with hash -261160497, now seen corresponding path program 1 times [2023-12-21 00:28:43,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:43,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268730900] [2023-12-21 00:28:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:43,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:43,500 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:43,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576139285] [2023-12-21 00:28:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:43,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:43,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:43,502 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:43,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 00:28:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:43,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 00:28:43,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 3378 proven. 36 refuted. 0 times theorem prover too weak. 8910 trivial. 0 not checked. [2023-12-21 00:28:44,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:28:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 198 proven. 36 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-21 00:28:44,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:44,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268730900] [2023-12-21 00:28:44,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:44,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576139285] [2023-12-21 00:28:44,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576139285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:28:44,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:28:44,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 00:28:44,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525489408] [2023-12-21 00:28:44,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:28:44,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 00:28:44,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:44,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 00:28:44,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:28:44,238 INFO L87 Difference]: Start difference. First operand 8532 states and 13660 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-21 00:28:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:44,574 INFO L93 Difference]: Finished difference Result 16954 states and 27122 transitions. [2023-12-21 00:28:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 00:28:44,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 529 [2023-12-21 00:28:44,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:44,588 INFO L225 Difference]: With dead ends: 16954 [2023-12-21 00:28:44,588 INFO L226 Difference]: Without dead ends: 8580 [2023-12-21 00:28:44,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1050 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:28:44,599 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 309 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:44,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 855 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 00:28:44,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8580 states. [2023-12-21 00:28:44,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8580 to 8544. [2023-12-21 00:28:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8544 states, 7887 states have (on average 1.5708127298085457) internal successors, (12389), 7905 states have internal predecessors, (12389), 625 states have call successors, (625), 31 states have call predecessors, (625), 31 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-21 00:28:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8544 states to 8544 states and 13639 transitions. [2023-12-21 00:28:44,864 INFO L78 Accepts]: Start accepts. Automaton has 8544 states and 13639 transitions. Word has length 529 [2023-12-21 00:28:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:44,864 INFO L495 AbstractCegarLoop]: Abstraction has 8544 states and 13639 transitions. [2023-12-21 00:28:44,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-21 00:28:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 8544 states and 13639 transitions. [2023-12-21 00:28:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-21 00:28:44,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:44,871 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:44,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:45,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:45,079 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:45,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash 692779661, now seen corresponding path program 1 times [2023-12-21 00:28:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:45,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741805137] [2023-12-21 00:28:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:45,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:45,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402637785] [2023-12-21 00:28:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:45,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:45,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:45,119 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:45,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 00:28:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:45,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 00:28:45,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6220 proven. 123 refuted. 0 times theorem prover too weak. 5981 trivial. 0 not checked. [2023-12-21 00:28:45,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:28:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 111 proven. 123 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-21 00:28:46,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741805137] [2023-12-21 00:28:46,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402637785] [2023-12-21 00:28:46,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402637785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:28:46,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:28:46,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-21 00:28:46,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038768049] [2023-12-21 00:28:46,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:28:46,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 00:28:46,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:46,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 00:28:46,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 00:28:46,048 INFO L87 Difference]: Start difference. First operand 8544 states and 13639 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2023-12-21 00:28:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:46,788 INFO L93 Difference]: Finished difference Result 17094 states and 27261 transitions. [2023-12-21 00:28:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 00:28:46,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) Word has length 529 [2023-12-21 00:28:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:46,799 INFO L225 Difference]: With dead ends: 17094 [2023-12-21 00:28:46,799 INFO L226 Difference]: Without dead ends: 8712 [2023-12-21 00:28:46,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1049 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-21 00:28:46,808 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 513 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:46,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1374 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 00:28:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8712 states. [2023-12-21 00:28:47,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8712 to 8556. [2023-12-21 00:28:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8556 states, 7896 states have (on average 1.531661600810537) internal successors, (12094), 7914 states have internal predecessors, (12094), 625 states have call successors, (625), 34 states have call predecessors, (625), 34 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-21 00:28:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8556 states to 8556 states and 13344 transitions. [2023-12-21 00:28:47,031 INFO L78 Accepts]: Start accepts. Automaton has 8556 states and 13344 transitions. Word has length 529 [2023-12-21 00:28:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:47,031 INFO L495 AbstractCegarLoop]: Abstraction has 8556 states and 13344 transitions. [2023-12-21 00:28:47,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2023-12-21 00:28:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8556 states and 13344 transitions. [2023-12-21 00:28:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-21 00:28:47,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:47,038 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:47,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:47,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:47,247 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:47,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:47,247 INFO L85 PathProgramCache]: Analyzing trace with hash 687163533, now seen corresponding path program 1 times [2023-12-21 00:28:47,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:47,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270374873] [2023-12-21 00:28:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:47,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:47,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:47,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264935700] [2023-12-21 00:28:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:47,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:47,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:47,291 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:47,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 00:28:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:47,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 00:28:47,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:49,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270374873] [2023-12-21 00:28:49,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264935700] [2023-12-21 00:28:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264935700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 00:28:49,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113305401] [2023-12-21 00:28:49,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:49,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 00:28:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 00:28:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 00:28:49,047 INFO L87 Difference]: Start difference. First operand 8556 states and 13344 transitions. Second operand has 8 states, 8 states have (on average 17.25) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:49,929 INFO L93 Difference]: Finished difference Result 21594 states and 33644 transitions. [2023-12-21 00:28:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 00:28:49,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-12-21 00:28:49,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:49,948 INFO L225 Difference]: With dead ends: 21594 [2023-12-21 00:28:49,948 INFO L226 Difference]: Without dead ends: 13204 [2023-12-21 00:28:49,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-21 00:28:49,960 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 1504 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:49,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 2465 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 00:28:49,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13204 states. [2023-12-21 00:28:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13204 to 8752. [2023-12-21 00:28:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8752 states, 8092 states have (on average 1.5286702916460702) internal successors, (12370), 8110 states have internal predecessors, (12370), 625 states have call successors, (625), 34 states have call predecessors, (625), 34 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-21 00:28:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8752 states to 8752 states and 13620 transitions. [2023-12-21 00:28:50,305 INFO L78 Accepts]: Start accepts. Automaton has 8752 states and 13620 transitions. Word has length 530 [2023-12-21 00:28:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:50,305 INFO L495 AbstractCegarLoop]: Abstraction has 8752 states and 13620 transitions. [2023-12-21 00:28:50,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 8752 states and 13620 transitions. [2023-12-21 00:28:50,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-21 00:28:50,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:50,312 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:50,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:50,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:50,521 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:50,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:50,523 INFO L85 PathProgramCache]: Analyzing trace with hash -92016691, now seen corresponding path program 1 times [2023-12-21 00:28:50,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:50,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23597670] [2023-12-21 00:28:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:50,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:50,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:50,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436419367] [2023-12-21 00:28:50,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:50,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:50,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:50,561 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:50,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 00:28:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:50,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 00:28:50,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:28:51,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:28:51,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:51,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23597670] [2023-12-21 00:28:51,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:51,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436419367] [2023-12-21 00:28:51,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436419367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:28:51,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:28:51,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 00:28:51,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290770959] [2023-12-21 00:28:51,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:28:51,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 00:28:51,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:51,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 00:28:51,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 00:28:51,054 INFO L87 Difference]: Start difference. First operand 8752 states and 13620 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:52,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:52,505 INFO L93 Difference]: Finished difference Result 33070 states and 51650 transitions. [2023-12-21 00:28:52,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 00:28:52,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-12-21 00:28:52,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:52,548 INFO L225 Difference]: With dead ends: 33070 [2023-12-21 00:28:52,548 INFO L226 Difference]: Without dead ends: 24592 [2023-12-21 00:28:52,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 00:28:52,566 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 2192 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:52,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2192 Valid, 2937 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 00:28:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24592 states. [2023-12-21 00:28:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24592 to 15086. [2023-12-21 00:28:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15086 states, 13852 states have (on average 1.5233179324285302) internal successors, (21101), 13888 states have internal predecessors, (21101), 1171 states have call successors, (1171), 62 states have call predecessors, (1171), 62 states have return successors, (1171), 1135 states have call predecessors, (1171), 1171 states have call successors, (1171) [2023-12-21 00:28:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15086 states to 15086 states and 23443 transitions. [2023-12-21 00:28:53,202 INFO L78 Accepts]: Start accepts. Automaton has 15086 states and 23443 transitions. Word has length 530 [2023-12-21 00:28:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:53,202 INFO L495 AbstractCegarLoop]: Abstraction has 15086 states and 23443 transitions. [2023-12-21 00:28:53,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:28:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 15086 states and 23443 transitions. [2023-12-21 00:28:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-21 00:28:53,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:53,212 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:53,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 00:28:53,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:53,422 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:53,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:53,423 INFO L85 PathProgramCache]: Analyzing trace with hash 124976653, now seen corresponding path program 1 times [2023-12-21 00:28:53,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:53,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870587388] [2023-12-21 00:28:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:53,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:53,466 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:53,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6161940] [2023-12-21 00:28:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:53,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:53,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:53,468 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:53,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 00:28:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:53,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 00:28:53,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:28:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6168 proven. 129 refuted. 0 times theorem prover too weak. 6027 trivial. 0 not checked. [2023-12-21 00:28:54,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:28:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 105 proven. 129 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-21 00:28:54,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:28:54,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870587388] [2023-12-21 00:28:54,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:28:54,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6161940] [2023-12-21 00:28:54,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6161940] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:28:54,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:28:54,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2023-12-21 00:28:54,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118529422] [2023-12-21 00:28:54,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:28:54,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 00:28:54,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:28:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 00:28:54,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-21 00:28:54,447 INFO L87 Difference]: Start difference. First operand 15086 states and 23443 transitions. Second operand has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-21 00:28:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:28:56,894 INFO L93 Difference]: Finished difference Result 42479 states and 66121 transitions. [2023-12-21 00:28:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 00:28:56,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 530 [2023-12-21 00:28:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:28:56,942 INFO L225 Difference]: With dead ends: 42479 [2023-12-21 00:28:56,942 INFO L226 Difference]: Without dead ends: 27712 [2023-12-21 00:28:56,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1100 GetRequests, 1054 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 00:28:56,965 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 2950 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 1089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3023 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1089 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 00:28:56,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3023 Valid, 2764 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1089 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 00:28:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27712 states. [2023-12-21 00:28:57,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27712 to 13570. [2023-12-21 00:28:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13570 states, 12449 states have (on average 1.516266366776448) internal successors, (18876), 12481 states have internal predecessors, (18876), 1061 states have call successors, (1061), 59 states have call predecessors, (1061), 59 states have return successors, (1061), 1029 states have call predecessors, (1061), 1061 states have call successors, (1061) [2023-12-21 00:28:57,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13570 states to 13570 states and 20998 transitions. [2023-12-21 00:28:57,662 INFO L78 Accepts]: Start accepts. Automaton has 13570 states and 20998 transitions. Word has length 530 [2023-12-21 00:28:57,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:28:57,663 INFO L495 AbstractCegarLoop]: Abstraction has 13570 states and 20998 transitions. [2023-12-21 00:28:57,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-21 00:28:57,663 INFO L276 IsEmpty]: Start isEmpty. Operand 13570 states and 20998 transitions. [2023-12-21 00:28:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-21 00:28:57,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:28:57,671 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:28:57,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-21 00:28:57,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:57,881 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:28:57,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:28:57,881 INFO L85 PathProgramCache]: Analyzing trace with hash -72342308, now seen corresponding path program 1 times [2023-12-21 00:28:57,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:28:57,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9191815] [2023-12-21 00:28:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:57,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:28:57,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:28:57,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110267850] [2023-12-21 00:28:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:28:57,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:28:57,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:28:57,929 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:28:57,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 00:28:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:28:58,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 00:28:58,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:29:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:29:01,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:29:01,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:29:01,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9191815] [2023-12-21 00:29:01,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:29:01,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110267850] [2023-12-21 00:29:01,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110267850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:29:01,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:29:01,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 00:29:01,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108162986] [2023-12-21 00:29:01,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:29:01,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 00:29:01,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:29:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 00:29:01,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:29:01,326 INFO L87 Difference]: Start difference. First operand 13570 states and 20998 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:29:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:29:01,946 INFO L93 Difference]: Finished difference Result 37932 states and 58799 transitions. [2023-12-21 00:29:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 00:29:01,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-12-21 00:29:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:29:01,977 INFO L225 Difference]: With dead ends: 37932 [2023-12-21 00:29:01,977 INFO L226 Difference]: Without dead ends: 24685 [2023-12-21 00:29:01,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:29:01,994 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 751 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 00:29:01,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1911 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 00:29:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24685 states. [2023-12-21 00:29:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24685 to 13570. [2023-12-21 00:29:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13570 states, 12449 states have (on average 1.516266366776448) internal successors, (18876), 12481 states have internal predecessors, (18876), 1061 states have call successors, (1061), 59 states have call predecessors, (1061), 59 states have return successors, (1061), 1029 states have call predecessors, (1061), 1061 states have call successors, (1061) [2023-12-21 00:29:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13570 states to 13570 states and 20998 transitions. [2023-12-21 00:29:02,505 INFO L78 Accepts]: Start accepts. Automaton has 13570 states and 20998 transitions. Word has length 530 [2023-12-21 00:29:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:29:02,505 INFO L495 AbstractCegarLoop]: Abstraction has 13570 states and 20998 transitions. [2023-12-21 00:29:02,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:29:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 13570 states and 20998 transitions. [2023-12-21 00:29:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-21 00:29:02,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:29:02,516 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:29:02,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 00:29:02,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:29:02,723 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:29:02,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:29:02,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1889232350, now seen corresponding path program 1 times [2023-12-21 00:29:02,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:29:02,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371331878] [2023-12-21 00:29:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:29:02,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:29:02,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:29:02,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426137376] [2023-12-21 00:29:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:29:02,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:29:02,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:29:02,778 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:29:02,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 00:29:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:29:03,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 00:29:03,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:29:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 00:29:05,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:29:05,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:29:05,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371331878] [2023-12-21 00:29:05,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:29:05,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426137376] [2023-12-21 00:29:05,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426137376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:29:05,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:29:05,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 00:29:05,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285168542] [2023-12-21 00:29:05,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:29:05,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 00:29:05,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:29:05,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 00:29:05,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-21 00:29:05,929 INFO L87 Difference]: Start difference. First operand 13570 states and 20998 transitions. Second operand has 8 states, 8 states have (on average 17.25) internal successors, (138), 8 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:29:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:29:06,668 INFO L93 Difference]: Finished difference Result 35624 states and 55206 transitions. [2023-12-21 00:29:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 00:29:06,669 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 8 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-12-21 00:29:06,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:29:06,705 INFO L225 Difference]: With dead ends: 35624 [2023-12-21 00:29:06,706 INFO L226 Difference]: Without dead ends: 22377 [2023-12-21 00:29:06,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-21 00:29:06,731 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 747 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 00:29:06,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 2285 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 00:29:06,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22377 states. [2023-12-21 00:29:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22377 to 12280. [2023-12-21 00:29:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12280 states, 11159 states have (on average 1.5127699614660812) internal successors, (16881), 11191 states have internal predecessors, (16881), 1061 states have call successors, (1061), 59 states have call predecessors, (1061), 59 states have return successors, (1061), 1029 states have call predecessors, (1061), 1061 states have call successors, (1061) [2023-12-21 00:29:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12280 states to 12280 states and 19003 transitions. [2023-12-21 00:29:07,388 INFO L78 Accepts]: Start accepts. Automaton has 12280 states and 19003 transitions. Word has length 530 [2023-12-21 00:29:07,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:29:07,388 INFO L495 AbstractCegarLoop]: Abstraction has 12280 states and 19003 transitions. [2023-12-21 00:29:07,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 8 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 00:29:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 12280 states and 19003 transitions. [2023-12-21 00:29:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 00:29:07,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:29:07,395 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:29:07,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 00:29:07,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-21 00:29:07,606 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:29:07,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:29:07,607 INFO L85 PathProgramCache]: Analyzing trace with hash -354843985, now seen corresponding path program 1 times [2023-12-21 00:29:07,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:29:07,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694360478] [2023-12-21 00:29:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:29:07,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:29:07,649 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:29:07,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106186573] [2023-12-21 00:29:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:29:07,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:29:07,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:29:07,651 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:29:07,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 00:29:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:29:08,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 00:29:08,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:29:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5898 proven. 144 refuted. 0 times theorem prover too weak. 6282 trivial. 0 not checked. [2023-12-21 00:29:09,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:29:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-21 00:29:10,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:29:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694360478] [2023-12-21 00:29:10,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:29:10,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106186573] [2023-12-21 00:29:10,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106186573] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:29:10,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:29:10,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-21 00:29:10,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143610549] [2023-12-21 00:29:10,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:29:10,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 00:29:10,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:29:10,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 00:29:10,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-12-21 00:29:10,433 INFO L87 Difference]: Start difference. First operand 12280 states and 19003 transitions. Second operand has 16 states, 16 states have (on average 17.25) internal successors, (276), 16 states have internal predecessors, (276), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) [2023-12-21 00:29:16,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 00:29:16,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:29:16,535 INFO L93 Difference]: Finished difference Result 35078 states and 54217 transitions. [2023-12-21 00:29:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 00:29:16,536 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 17.25) internal successors, (276), 16 states have internal predecessors, (276), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) Word has length 531 [2023-12-21 00:29:16,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:29:16,569 INFO L225 Difference]: With dead ends: 35078 [2023-12-21 00:29:16,569 INFO L226 Difference]: Without dead ends: 22486 [2023-12-21 00:29:16,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1078 GetRequests, 1048 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2023-12-21 00:29:16,588 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 1744 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 521 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:29:16,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1744 Valid, 2943 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 1613 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-21 00:29:16,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22486 states. [2023-12-21 00:29:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22486 to 16543. [2023-12-21 00:29:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16543 states, 15022 states have (on average 1.5028624683797098) internal successors, (22576), 15072 states have internal predecessors, (22576), 1431 states have call successors, (1431), 89 states have call predecessors, (1431), 89 states have return successors, (1431), 1381 states have call predecessors, (1431), 1431 states have call successors, (1431) [2023-12-21 00:29:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16543 states to 16543 states and 25438 transitions. [2023-12-21 00:29:17,242 INFO L78 Accepts]: Start accepts. Automaton has 16543 states and 25438 transitions. Word has length 531 [2023-12-21 00:29:17,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:29:17,243 INFO L495 AbstractCegarLoop]: Abstraction has 16543 states and 25438 transitions. [2023-12-21 00:29:17,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.25) internal successors, (276), 16 states have internal predecessors, (276), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) [2023-12-21 00:29:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 16543 states and 25438 transitions. [2023-12-21 00:29:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 00:29:17,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:29:17,249 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:29:17,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-21 00:29:17,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 00:29:17,454 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:29:17,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:29:17,455 INFO L85 PathProgramCache]: Analyzing trace with hash -80084371, now seen corresponding path program 1 times [2023-12-21 00:29:17,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:29:17,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827973543] [2023-12-21 00:29:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:29:17,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:29:17,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:29:17,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748567423] [2023-12-21 00:29:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:29:17,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:29:17,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:29:17,553 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:29:17,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 00:29:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:29:18,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 00:29:18,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:29:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 8094 proven. 354 refuted. 0 times theorem prover too weak. 3876 trivial. 0 not checked. [2023-12-21 00:29:19,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:29:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 330 proven. 363 refuted. 0 times theorem prover too weak. 11631 trivial. 0 not checked. [2023-12-21 00:29:19,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:29:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827973543] [2023-12-21 00:29:19,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:29:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748567423] [2023-12-21 00:29:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748567423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:29:19,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:29:19,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-21 00:29:19,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079312224] [2023-12-21 00:29:19,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:29:19,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 00:29:19,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:29:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 00:29:19,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-12-21 00:29:19,678 INFO L87 Difference]: Start difference. First operand 16543 states and 25438 transitions. Second operand has 26 states, 25 states have (on average 9.56) internal successors, (239), 24 states have internal predecessors, (239), 7 states have call successors, (135), 4 states have call predecessors, (135), 9 states have return successors, (136), 7 states have call predecessors, (136), 7 states have call successors, (136)