/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:16:43,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:16:43,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:16:43,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:16:43,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:16:43,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:16:43,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:16:43,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:16:43,636 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:16:43,636 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:16:43,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:16:43,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:16:43,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:16:43,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:16:43,638 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:16:43,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:16:43,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:16:43,639 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:16:43,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:16:43,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:16:43,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:16:43,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:16:43,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:16:43,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:16:43,643 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:16:43,644 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:16:43,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:16:43,644 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:16:43,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:16:43,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:16:43,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:16:43,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:16:43,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:16:43,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:16:43,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:16:43,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:16:43,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:16:43,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:16:43,649 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:16:43,649 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:16:43,650 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:16:43,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:16:43,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:16:43,651 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:16:43,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:16:43,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:16:43,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:16:43,857 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:16:43,857 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:16:43,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-10.i [2023-12-15 21:16:45,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:16:45,260 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:16:45,261 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-10.i [2023-12-15 21:16:45,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cb76cb3/9195dad9ab5e4b11918c35702162b773/FLAG8551b93b8 [2023-12-15 21:16:45,301 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cb76cb3/9195dad9ab5e4b11918c35702162b773 [2023-12-15 21:16:45,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:16:45,304 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:16:45,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:16:45,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:16:45,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:16:45,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:45,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439055e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45, skipping insertion in model container [2023-12-15 21:16:45,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:45,375 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:16:45,496 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-10.i[916,929] [2023-12-15 21:16:45,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:16:45,768 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:16:45,783 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-10.i[916,929] [2023-12-15 21:16:45,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:16:45,967 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:16:45,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45 WrapperNode [2023-12-15 21:16:45,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:16:45,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:16:45,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:16:45,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:16:45,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,138 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 701 [2023-12-15 21:16:46,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:16:46,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:16:46,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:16:46,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:16:46,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,239 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:16:46,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:16:46,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:16:46,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:16:46,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:16:46,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (1/1) ... [2023-12-15 21:16:46,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:16:46,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:46,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:16:46,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:16:46,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:16:46,415 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:16:46,416 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:16:46,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:16:46,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:16:46,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:16:46,573 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:16:46,579 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:16:47,592 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:16:47,636 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:16:47,636 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:16:47,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:16:47 BoogieIcfgContainer [2023-12-15 21:16:47,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:16:47,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:16:47,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:16:47,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:16:47,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:16:45" (1/3) ... [2023-12-15 21:16:47,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ea7d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:16:47, skipping insertion in model container [2023-12-15 21:16:47,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:45" (2/3) ... [2023-12-15 21:16:47,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ea7d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:16:47, skipping insertion in model container [2023-12-15 21:16:47,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:16:47" (3/3) ... [2023-12-15 21:16:47,645 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-10.i [2023-12-15 21:16:47,661 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:16:47,662 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:16:47,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:16:47,735 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;@7d4d0e7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:16:47,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:16:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 261 states, 178 states have (on average 1.5617977528089888) internal successors, (278), 179 states have internal predecessors, (278), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-15 21:16:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:16:47,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:47,768 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:47,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:47,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash -644561840, now seen corresponding path program 1 times [2023-12-15 21:16:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:47,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525469072] [2023-12-15 21:16:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:47,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:48,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:48,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525469072] [2023-12-15 21:16:48,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:16:48,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440009968] [2023-12-15 21:16:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:48,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:48,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:48,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:48,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:16:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:48,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:16:48,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2023-12-15 21:16:48,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:48,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440009968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:48,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:48,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:16:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562312965] [2023-12-15 21:16:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:48,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:16:48,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:48,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:16:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:16:48,715 INFO L87 Difference]: Start difference. First operand has 261 states, 178 states have (on average 1.5617977528089888) internal successors, (278), 179 states have internal predecessors, (278), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-15 21:16:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:48,793 INFO L93 Difference]: Finished difference Result 519 states and 954 transitions. [2023-12-15 21:16:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:16:48,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) Word has length 526 [2023-12-15 21:16:48,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:48,806 INFO L225 Difference]: With dead ends: 519 [2023-12-15 21:16:48,806 INFO L226 Difference]: Without dead ends: 259 [2023-12-15 21:16:48,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:16:48,815 INFO L413 NwaCegarLoop]: 428 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, 428 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:48,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 428 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:16:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-15 21:16:48,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2023-12-15 21:16:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 177 states have (on average 1.5310734463276836) internal successors, (271), 177 states have internal predecessors, (271), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-15 21:16:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 431 transitions. [2023-12-15 21:16:48,890 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 431 transitions. Word has length 526 [2023-12-15 21:16:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:48,891 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 431 transitions. [2023-12-15 21:16:48,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-15 21:16:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 431 transitions. [2023-12-15 21:16:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:16:48,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:48,910 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:48,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:49,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:16:49,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:49,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:49,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1185284108, now seen corresponding path program 1 times [2023-12-15 21:16:49,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:49,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215119149] [2023-12-15 21:16:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:49,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:49,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:49,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662009022] [2023-12-15 21:16:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:49,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:49,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:49,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:49,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:16:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:49,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:16:49,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-15 21:16:50,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:50,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:50,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215119149] [2023-12-15 21:16:50,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:50,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662009022] [2023-12-15 21:16:50,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662009022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:50,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:50,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:16:50,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966281099] [2023-12-15 21:16:50,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:50,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:16:50,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:50,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:16:50,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:16:50,367 INFO L87 Difference]: Start difference. First operand 259 states and 431 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:50,768 INFO L93 Difference]: Finished difference Result 776 states and 1292 transitions. [2023-12-15 21:16:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:16:50,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 526 [2023-12-15 21:16:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:50,774 INFO L225 Difference]: With dead ends: 776 [2023-12-15 21:16:50,775 INFO L226 Difference]: Without dead ends: 518 [2023-12-15 21:16:50,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:16:50,777 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 583 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:50,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1691 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:16:50,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2023-12-15 21:16:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 401. [2023-12-15 21:16:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 238 states have (on average 1.4285714285714286) internal successors, (340), 238 states have internal predecessors, (340), 160 states have call successors, (160), 2 states have call predecessors, (160), 2 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-15 21:16:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 660 transitions. [2023-12-15 21:16:50,871 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 660 transitions. Word has length 526 [2023-12-15 21:16:50,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:50,875 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 660 transitions. [2023-12-15 21:16:50,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 660 transitions. [2023-12-15 21:16:50,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:16:50,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:50,883 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:50,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:51,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:16:51,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:51,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:51,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1262184906, now seen corresponding path program 1 times [2023-12-15 21:16:51,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:51,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089253011] [2023-12-15 21:16:51,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:51,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:51,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:51,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546601645] [2023-12-15 21:16:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:51,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:51,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:51,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:51,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:16:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:51,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:16:51,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-15 21:16:51,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:51,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:51,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089253011] [2023-12-15 21:16:51,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:51,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546601645] [2023-12-15 21:16:51,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546601645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:51,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:51,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:16:51,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114175944] [2023-12-15 21:16:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:51,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:16:51,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:16:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:51,630 INFO L87 Difference]: Start difference. First operand 401 states and 660 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:51,712 INFO L93 Difference]: Finished difference Result 917 states and 1520 transitions. [2023-12-15 21:16:51,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:16:51,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 526 [2023-12-15 21:16:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:51,718 INFO L225 Difference]: With dead ends: 917 [2023-12-15 21:16:51,718 INFO L226 Difference]: Without dead ends: 659 [2023-12-15 21:16:51,720 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 [2023-12-15 21:16:51,721 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 415 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:51,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 848 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:16:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-15 21:16:51,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 657. [2023-12-15 21:16:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 413 states have (on average 1.4673123486682809) internal successors, (606), 413 states have internal predecessors, (606), 240 states have call successors, (240), 3 states have call predecessors, (240), 3 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-15 21:16:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1086 transitions. [2023-12-15 21:16:51,802 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1086 transitions. Word has length 526 [2023-12-15 21:16:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:51,804 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1086 transitions. [2023-12-15 21:16:51,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1086 transitions. [2023-12-15 21:16:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:16:51,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:51,808 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:51,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:52,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:52,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:52,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash -583182260, now seen corresponding path program 1 times [2023-12-15 21:16:52,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:52,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170436106] [2023-12-15 21:16:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:52,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:52,113 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:52,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079903462] [2023-12-15 21:16:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:52,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:52,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:52,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:52,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:16:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:52,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:16:52,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-15 21:16:52,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:52,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:52,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170436106] [2023-12-15 21:16:52,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:52,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079903462] [2023-12-15 21:16:52,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079903462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:52,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:52,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:16:52,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175498074] [2023-12-15 21:16:52,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:52,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:16:52,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:52,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:16:52,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:52,575 INFO L87 Difference]: Start difference. First operand 657 states and 1086 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:52,735 INFO L93 Difference]: Finished difference Result 1681 states and 2790 transitions. [2023-12-15 21:16:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:16:52,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 526 [2023-12-15 21:16:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:52,742 INFO L225 Difference]: With dead ends: 1681 [2023-12-15 21:16:52,743 INFO L226 Difference]: Without dead ends: 1167 [2023-12-15 21:16:52,745 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 [2023-12-15 21:16:52,746 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 380 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:52,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1137 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:16:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2023-12-15 21:16:52,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 791. [2023-12-15 21:16:52,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 547 states have (on average 1.5338208409506398) internal successors, (839), 547 states have internal predecessors, (839), 240 states have call successors, (240), 3 states have call predecessors, (240), 3 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-15 21:16:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1319 transitions. [2023-12-15 21:16:52,819 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1319 transitions. Word has length 526 [2023-12-15 21:16:52,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:52,820 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1319 transitions. [2023-12-15 21:16:52,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1319 transitions. [2023-12-15 21:16:52,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:16:52,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:52,824 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:52,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:53,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:53,034 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:53,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1315149686, now seen corresponding path program 1 times [2023-12-15 21:16:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:53,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545163413] [2023-12-15 21:16:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:53,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:53,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:53,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647914383] [2023-12-15 21:16:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:53,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:53,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:53,102 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:53,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:16:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:53,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:16:53,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-15 21:16:53,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:53,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:53,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545163413] [2023-12-15 21:16:53,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:53,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647914383] [2023-12-15 21:16:53,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647914383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:53,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:53,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:16:53,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023380799] [2023-12-15 21:16:53,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:53,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:16:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:53,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:16:53,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:53,548 INFO L87 Difference]: Start difference. First operand 791 states and 1319 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:53,665 INFO L93 Difference]: Finished difference Result 1861 states and 3111 transitions. [2023-12-15 21:16:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:16:53,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 526 [2023-12-15 21:16:53,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:53,675 INFO L225 Difference]: With dead ends: 1861 [2023-12-15 21:16:53,675 INFO L226 Difference]: Without dead ends: 1213 [2023-12-15 21:16:53,678 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 [2023-12-15 21:16:53,678 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 215 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:53,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 976 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:16:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2023-12-15 21:16:53,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1189. [2023-12-15 21:16:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 877 states have (on average 1.5587229190421892) internal successors, (1367), 879 states have internal predecessors, (1367), 306 states have call successors, (306), 5 states have call predecessors, (306), 5 states have return successors, (306), 304 states have call predecessors, (306), 306 states have call successors, (306) [2023-12-15 21:16:53,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1979 transitions. [2023-12-15 21:16:53,802 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1979 transitions. Word has length 526 [2023-12-15 21:16:53,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:53,804 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1979 transitions. [2023-12-15 21:16:53,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1979 transitions. [2023-12-15 21:16:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:16:53,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:53,809 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:53,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:54,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:54,020 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:54,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:54,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1489142022, now seen corresponding path program 1 times [2023-12-15 21:16:54,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:54,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053311890] [2023-12-15 21:16:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:54,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:54,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:54,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373516604] [2023-12-15 21:16:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:54,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:54,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:54,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:54,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:16:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:54,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:16:54,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-15 21:16:54,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:54,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053311890] [2023-12-15 21:16:54,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373516604] [2023-12-15 21:16:54,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373516604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:54,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:54,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:16:54,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059923743] [2023-12-15 21:16:54,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:54,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:16:54,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:54,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:16:54,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:54,587 INFO L87 Difference]: Start difference. First operand 1189 states and 1979 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:54,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:54,741 INFO L93 Difference]: Finished difference Result 3275 states and 5465 transitions. [2023-12-15 21:16:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:16:54,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 526 [2023-12-15 21:16:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:54,755 INFO L225 Difference]: With dead ends: 3275 [2023-12-15 21:16:54,755 INFO L226 Difference]: Without dead ends: 2229 [2023-12-15 21:16:54,758 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 [2023-12-15 21:16:54,759 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 366 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:54,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 873 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:16:54,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2023-12-15 21:16:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1737. [2023-12-15 21:16:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1425 states have (on average 1.6175438596491227) internal successors, (2305), 1427 states have internal predecessors, (2305), 306 states have call successors, (306), 5 states have call predecessors, (306), 5 states have return successors, (306), 304 states have call predecessors, (306), 306 states have call successors, (306) [2023-12-15 21:16:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2917 transitions. [2023-12-15 21:16:54,901 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2917 transitions. Word has length 526 [2023-12-15 21:16:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:54,902 INFO L495 AbstractCegarLoop]: Abstraction has 1737 states and 2917 transitions. [2023-12-15 21:16:54,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2917 transitions. [2023-12-15 21:16:54,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:16:54,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:54,931 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:54,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:55,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:55,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:55,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:55,140 INFO L85 PathProgramCache]: Analyzing trace with hash 521791368, now seen corresponding path program 1 times [2023-12-15 21:16:55,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:55,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320068406] [2023-12-15 21:16:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:55,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:55,196 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:55,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456590594] [2023-12-15 21:16:55,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:55,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:55,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:55,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:55,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:16:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:55,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:16:55,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-15 21:16:55,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:55,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320068406] [2023-12-15 21:16:55,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:55,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456590594] [2023-12-15 21:16:55,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456590594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:55,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:55,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:16:55,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019204517] [2023-12-15 21:16:55,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:55,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:16:55,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:55,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:16:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:16:55,710 INFO L87 Difference]: Start difference. First operand 1737 states and 2917 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:56,641 INFO L93 Difference]: Finished difference Result 11391 states and 19265 transitions. [2023-12-15 21:16:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:16:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 526 [2023-12-15 21:16:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:56,684 INFO L225 Difference]: With dead ends: 11391 [2023-12-15 21:16:56,686 INFO L226 Difference]: Without dead ends: 9797 [2023-12-15 21:16:56,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:16:56,696 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 2172 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:56,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 2654 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:16:56,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9797 states. [2023-12-15 21:16:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9797 to 5865. [2023-12-15 21:16:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5865 states, 5218 states have (on average 1.648524338827137) internal successors, (8602), 5232 states have internal predecessors, (8602), 620 states have call successors, (620), 26 states have call predecessors, (620), 26 states have return successors, (620), 606 states have call predecessors, (620), 620 states have call successors, (620) [2023-12-15 21:16:57,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 9842 transitions. [2023-12-15 21:16:57,004 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 9842 transitions. Word has length 526 [2023-12-15 21:16:57,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:57,005 INFO L495 AbstractCegarLoop]: Abstraction has 5865 states and 9842 transitions. [2023-12-15 21:16:57,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:16:57,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 9842 transitions. [2023-12-15 21:16:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:16:57,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:57,015 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:57,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:57,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:57,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:57,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1636519160, now seen corresponding path program 1 times [2023-12-15 21:16:57,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:57,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180505866] [2023-12-15 21:16:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:57,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:57,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215078259] [2023-12-15 21:16:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:57,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:57,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:57,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:57,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:16:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:57,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:16:57,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 4993 proven. 174 refuted. 0 times theorem prover too weak. 7473 trivial. 0 not checked. [2023-12-15 21:16:58,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:16:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 63 proven. 174 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-15 21:16:58,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:58,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180505866] [2023-12-15 21:16:58,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:58,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215078259] [2023-12-15 21:16:58,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215078259] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:16:58,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:16:58,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:16:58,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237725554] [2023-12-15 21:16:58,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:16:58,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:16:58,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:16:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:16:58,519 INFO L87 Difference]: Start difference. First operand 5865 states and 9842 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-12-15 21:16:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:59,113 INFO L93 Difference]: Finished difference Result 11689 states and 19548 transitions. [2023-12-15 21:16:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:16:59,113 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), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) Word has length 526 [2023-12-15 21:16:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:59,147 INFO L225 Difference]: With dead ends: 11689 [2023-12-15 21:16:59,148 INFO L226 Difference]: Without dead ends: 5971 [2023-12-15 21:16:59,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 1044 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:16:59,162 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 431 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:59,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 843 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:16:59,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2023-12-15 21:16:59,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5901. [2023-12-15 21:16:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5901 states, 5245 states have (on average 1.6360343183984747) internal successors, (8581), 5259 states have internal predecessors, (8581), 620 states have call successors, (620), 35 states have call predecessors, (620), 35 states have return successors, (620), 606 states have call predecessors, (620), 620 states have call successors, (620) [2023-12-15 21:16:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5901 states to 5901 states and 9821 transitions. [2023-12-15 21:16:59,509 INFO L78 Accepts]: Start accepts. Automaton has 5901 states and 9821 transitions. Word has length 526 [2023-12-15 21:16:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:59,509 INFO L495 AbstractCegarLoop]: Abstraction has 5901 states and 9821 transitions. [2023-12-15 21:16:59,510 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), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-12-15 21:16:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5901 states and 9821 transitions. [2023-12-15 21:16:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:16:59,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:59,524 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:59,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:59,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:16:59,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:59,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash 629862026, now seen corresponding path program 1 times [2023-12-15 21:16:59,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:59,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690541029] [2023-12-15 21:16:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:59,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:59,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:59,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929563475] [2023-12-15 21:16:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:59,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:59,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:59,806 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:59,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:17:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:00,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:17:00,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-15 21:17:00,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:00,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:00,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690541029] [2023-12-15 21:17:00,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:00,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929563475] [2023-12-15 21:17:00,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929563475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:00,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:00,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:17:00,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718183840] [2023-12-15 21:17:00,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:00,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:17:00,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:00,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:17:00,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:00,228 INFO L87 Difference]: Start difference. First operand 5901 states and 9821 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:17:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:00,893 INFO L93 Difference]: Finished difference Result 21891 states and 36500 transitions. [2023-12-15 21:17:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:17:00,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 526 [2023-12-15 21:17:00,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:00,940 INFO L225 Difference]: With dead ends: 21891 [2023-12-15 21:17:00,940 INFO L226 Difference]: Without dead ends: 16141 [2023-12-15 21:17:00,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:00,957 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 745 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:00,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1778 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:17:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16141 states. [2023-12-15 21:17:01,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16141 to 16129. [2023-12-15 21:17:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16129 states, 14629 states have (on average 1.6291612550413561) internal successors, (23833), 14673 states have internal predecessors, (23833), 1408 states have call successors, (1408), 91 states have call predecessors, (1408), 91 states have return successors, (1408), 1364 states have call predecessors, (1408), 1408 states have call successors, (1408) [2023-12-15 21:17:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16129 states to 16129 states and 26649 transitions. [2023-12-15 21:17:01,653 INFO L78 Accepts]: Start accepts. Automaton has 16129 states and 26649 transitions. Word has length 526 [2023-12-15 21:17:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:01,654 INFO L495 AbstractCegarLoop]: Abstraction has 16129 states and 26649 transitions. [2023-12-15 21:17:01,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:17:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 16129 states and 26649 transitions. [2023-12-15 21:17:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:17:01,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:01,675 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:01,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:01,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:01,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:01,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:01,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1725943224, now seen corresponding path program 1 times [2023-12-15 21:17:01,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:01,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542495413] [2023-12-15 21:17:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:01,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:01,960 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:01,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681250639] [2023-12-15 21:17:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:01,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:01,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:01,962 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:01,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:17:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:02,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:17:02,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-15 21:17:03,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:03,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:03,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542495413] [2023-12-15 21:17:03,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:03,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681250639] [2023-12-15 21:17:03,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681250639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:03,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:03,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:17:03,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130906648] [2023-12-15 21:17:03,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:03,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:17:03,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:03,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:17:03,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:17:03,046 INFO L87 Difference]: Start difference. First operand 16129 states and 26649 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 6 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:17:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:04,731 INFO L93 Difference]: Finished difference Result 57993 states and 95651 transitions. [2023-12-15 21:17:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:17:04,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 6 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 526 [2023-12-15 21:17:04,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:04,849 INFO L225 Difference]: With dead ends: 57993 [2023-12-15 21:17:04,849 INFO L226 Difference]: Without dead ends: 42015 [2023-12-15 21:17:04,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:17:04,895 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 1652 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:04,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 3322 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:17:04,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42015 states. [2023-12-15 21:17:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42015 to 38125. [2023-12-15 21:17:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38125 states, 34683 states have (on average 1.6239367990081597) internal successors, (56323), 34783 states have internal predecessors, (56323), 3224 states have call successors, (3224), 217 states have call predecessors, (3224), 217 states have return successors, (3224), 3124 states have call predecessors, (3224), 3224 states have call successors, (3224) [2023-12-15 21:17:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38125 states to 38125 states and 62771 transitions. [2023-12-15 21:17:06,530 INFO L78 Accepts]: Start accepts. Automaton has 38125 states and 62771 transitions. Word has length 526 [2023-12-15 21:17:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:06,531 INFO L495 AbstractCegarLoop]: Abstraction has 38125 states and 62771 transitions. [2023-12-15 21:17:06,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 6 states have internal predecessors, (129), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-15 21:17:06,531 INFO L276 IsEmpty]: Start isEmpty. Operand 38125 states and 62771 transitions. [2023-12-15 21:17:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:17:06,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:06,552 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:06,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:06,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:17:06,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:06,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:06,763 INFO L85 PathProgramCache]: Analyzing trace with hash 763585738, now seen corresponding path program 1 times [2023-12-15 21:17:06,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:06,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710726183] [2023-12-15 21:17:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:06,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:06,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:06,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586308753] [2023-12-15 21:17:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:06,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:06,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:06,819 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:06,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:17:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:07,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:17:07,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6057 proven. 90 refuted. 0 times theorem prover too weak. 6493 trivial. 0 not checked. [2023-12-15 21:17:08,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 147 proven. 90 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-15 21:17:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:08,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710726183] [2023-12-15 21:17:08,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:08,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586308753] [2023-12-15 21:17:08,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586308753] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:08,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:08,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 21:17:08,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142093006] [2023-12-15 21:17:08,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:08,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:17:08,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:17:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:17:08,819 INFO L87 Difference]: Start difference. First operand 38125 states and 62771 transitions. Second operand has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 12 states have internal predecessors, (223), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) [2023-12-15 21:17:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:14,431 INFO L93 Difference]: Finished difference Result 163527 states and 266778 transitions. [2023-12-15 21:17:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-15 21:17:14,432 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 12 states have internal predecessors, (223), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) Word has length 526 [2023-12-15 21:17:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:14,868 INFO L225 Difference]: With dead ends: 163527 [2023-12-15 21:17:14,868 INFO L226 Difference]: Without dead ends: 125561 [2023-12-15 21:17:14,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1082 GetRequests, 1045 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=392, Invalid=1014, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 21:17:14,939 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 5399 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 2914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5499 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 4210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2914 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:14,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5499 Valid, 2980 Invalid, 4210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2914 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 21:17:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125561 states. [2023-12-15 21:17:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125561 to 83373. [2023-12-15 21:17:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83373 states, 77294 states have (on average 1.6389370455662795) internal successors, (126680), 77498 states have internal predecessors, (126680), 5628 states have call successors, (5628), 450 states have call predecessors, (5628), 450 states have return successors, (5628), 5424 states have call predecessors, (5628), 5628 states have call successors, (5628) [2023-12-15 21:17:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83373 states to 83373 states and 137936 transitions. [2023-12-15 21:17:18,660 INFO L78 Accepts]: Start accepts. Automaton has 83373 states and 137936 transitions. Word has length 526 [2023-12-15 21:17:18,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:18,664 INFO L495 AbstractCegarLoop]: Abstraction has 83373 states and 137936 transitions. [2023-12-15 21:17:18,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 12 states have internal predecessors, (223), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) [2023-12-15 21:17:18,664 INFO L276 IsEmpty]: Start isEmpty. Operand 83373 states and 137936 transitions. [2023-12-15 21:17:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:17:18,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:18,696 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:18,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-15 21:17:18,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:17:18,907 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:18,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash 369218952, now seen corresponding path program 1 times [2023-12-15 21:17:18,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:18,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125007286] [2023-12-15 21:17:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:18,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:18,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:18,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934714264] [2023-12-15 21:17:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:18,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:18,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:18,958 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:18,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:17:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:19,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:17:19,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 79 proven. 237 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-15 21:17:20,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-15 21:17:21,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:21,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125007286] [2023-12-15 21:17:21,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:21,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934714264] [2023-12-15 21:17:21,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934714264] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:21,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:21,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2023-12-15 21:17:21,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463856049] [2023-12-15 21:17:21,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:21,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 21:17:21,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:21,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 21:17:21,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:17:21,112 INFO L87 Difference]: Start difference. First operand 83373 states and 137936 transitions. Second operand has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 3 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 2 states have call predecessors, (160), 3 states have call successors, (160) [2023-12-15 21:17:27,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:27,523 INFO L93 Difference]: Finished difference Result 413187 states and 681171 transitions. [2023-12-15 21:17:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-15 21:17:27,524 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 3 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 2 states have call predecessors, (160), 3 states have call successors, (160) Word has length 526 [2023-12-15 21:17:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:28,374 INFO L225 Difference]: With dead ends: 413187 [2023-12-15 21:17:28,375 INFO L226 Difference]: Without dead ends: 329977 [2023-12-15 21:17:28,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1038 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=723, Invalid=2699, Unknown=0, NotChecked=0, Total=3422 [2023-12-15 21:17:28,493 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 4174 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4175 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:28,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4175 Valid, 3385 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 21:17:28,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329977 states. [2023-12-15 21:17:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329977 to 167249. [2023-12-15 21:17:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167249 states, 157423 states have (on average 1.6377340032904977) internal successors, (257817), 157789 states have internal predecessors, (257817), 8686 states have call successors, (8686), 1139 states have call predecessors, (8686), 1139 states have return successors, (8686), 8320 states have call predecessors, (8686), 8686 states have call successors, (8686) [2023-12-15 21:17:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167249 states to 167249 states and 275189 transitions. [2023-12-15 21:17:34,835 INFO L78 Accepts]: Start accepts. Automaton has 167249 states and 275189 transitions. Word has length 526 [2023-12-15 21:17:34,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:34,837 INFO L495 AbstractCegarLoop]: Abstraction has 167249 states and 275189 transitions. [2023-12-15 21:17:34,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 3 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 2 states have call predecessors, (160), 3 states have call successors, (160) [2023-12-15 21:17:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 167249 states and 275189 transitions. [2023-12-15 21:17:34,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:17:34,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:34,892 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:34,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:35,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:17:35,101 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:35,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:35,101 INFO L85 PathProgramCache]: Analyzing trace with hash 409893702, now seen corresponding path program 1 times [2023-12-15 21:17:35,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:35,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300797256] [2023-12-15 21:17:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:35,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:35,163 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:35,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010245381] [2023-12-15 21:17:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:35,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:35,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:35,165 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:35,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Received shutdown request... [2023-12-15 21:17:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:35,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:17:35,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:35,899 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:17:35,908 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:17:35,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:35,908 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:17:36,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:17:36,101 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 527 with TraceHistMax 80,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-15 21:17:36,104 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:36,106 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:17:36,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:17:36 BoogieIcfgContainer [2023-12-15 21:17:36,108 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:17:36,109 INFO L158 Benchmark]: Toolchain (without parser) took 50804.73ms. Allocated memory was 180.4MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 119.2MB in the beginning and 4.9GB in the end (delta: -4.7GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-15 21:17:36,109 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory was 131.7MB in the beginning and 131.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:17:36,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.65ms. Allocated memory was 180.4MB in the beginning and 247.5MB in the end (delta: 67.1MB). Free memory was 118.8MB in the beginning and 200.6MB in the end (delta: -81.8MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. [2023-12-15 21:17:36,110 INFO L158 Benchmark]: Boogie Procedure Inliner took 167.00ms. Allocated memory is still 247.5MB. Free memory was 200.6MB in the beginning and 178.0MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-15 21:17:36,110 INFO L158 Benchmark]: Boogie Preprocessor took 217.25ms. Allocated memory is still 247.5MB. Free memory was 178.0MB in the beginning and 195.6MB in the end (delta: -17.5MB). Peak memory consumption was 64.3MB. Max. memory is 8.0GB. [2023-12-15 21:17:36,110 INFO L158 Benchmark]: RCFGBuilder took 1279.13ms. Allocated memory is still 247.5MB. Free memory was 195.6MB in the beginning and 172.3MB in the end (delta: 23.3MB). Peak memory consumption was 88.8MB. Max. memory is 8.0GB. [2023-12-15 21:17:36,110 INFO L158 Benchmark]: TraceAbstraction took 48469.43ms. Allocated memory was 247.5MB in the beginning and 6.0GB in the end (delta: 5.7GB). Free memory was 171.8MB in the beginning and 4.9GB in the end (delta: -4.7GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-15 21:17:36,116 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory was 131.7MB in the beginning and 131.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 665.65ms. Allocated memory was 180.4MB in the beginning and 247.5MB in the end (delta: 67.1MB). Free memory was 118.8MB in the beginning and 200.6MB in the end (delta: -81.8MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 167.00ms. Allocated memory is still 247.5MB. Free memory was 200.6MB in the beginning and 178.0MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 217.25ms. Allocated memory is still 247.5MB. Free memory was 178.0MB in the beginning and 195.6MB in the end (delta: -17.5MB). Peak memory consumption was 64.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1279.13ms. Allocated memory is still 247.5MB. Free memory was 195.6MB in the beginning and 172.3MB in the end (delta: 23.3MB). Peak memory consumption was 88.8MB. Max. memory is 8.0GB. * TraceAbstraction took 48469.43ms. Allocated memory was 247.5MB in the beginning and 6.0GB in the end (delta: 5.7GB). Free memory was 171.8MB in the beginning and 4.9GB in the end (delta: -4.7GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 527 with TraceHistMax 80,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 261 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.4s, OverallIterations: 13, TraceHistogramMax: 80, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16653 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16532 mSDsluCounter, 20915 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14538 mSDsCounter, 3819 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4768 IncrementalHoareTripleChecker+Invalid, 8587 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3819 mSolverCounterUnsat, 6377 mSDtfsCounter, 4768 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7975 GetRequests, 7838 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167249occurred in iteration=12, InterpolantAutomatonStates: 139, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 213831 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 6838 NumberOfCodeBlocks, 6838 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 7875 ConstructedInterpolants, 0 QuantifiedInterpolants, 19814 SizeOfPredicates, 32 NumberOfNonLiveVariables, 16118 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 15 InterpolantComputations, 9 PerfectInterpolantSequences, 188598/189600 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown