/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-93.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 01:17:37,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 01:17:37,388 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 01:17:37,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 01:17:37,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 01:17:37,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 01:17:37,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 01:17:37,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 01:17:37,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 01:17:37,412 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 01:17:37,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 01:17:37,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 01:17:37,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 01:17:37,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 01:17:37,414 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 01:17:37,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 01:17:37,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 01:17:37,415 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 01:17:37,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 01:17:37,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 01:17:37,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 01:17:37,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 01:17:37,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 01:17:37,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 01:17:37,418 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 01:17:37,418 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 01:17:37,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 01:17:37,419 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 01:17:37,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 01:17:37,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 01:17:37,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 01:17:37,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 01:17:37,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:17:37,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 01:17:37,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 01:17:37,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 01:17:37,422 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 01:17:37,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 01:17:37,422 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 01:17:37,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 01:17:37,423 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 01:17:37,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 01:17:37,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 01:17:37,424 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 01:17:37,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 01:17:37,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 01:17:37,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 01:17:37,667 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 01:17:37,667 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 01:17:37,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-93.i [2023-12-21 01:17:38,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 01:17:39,141 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 01:17:39,142 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-93.i [2023-12-21 01:17:39,156 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c076fbe3a/f132785b56f74c5eb9e3955d0a3e04e1/FLAG3174ef314 [2023-12-21 01:17:39,176 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c076fbe3a/f132785b56f74c5eb9e3955d0a3e04e1 [2023-12-21 01:17:39,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 01:17:39,181 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 01:17:39,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 01:17:39,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 01:17:39,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 01:17:39,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:39,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f368a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39, skipping insertion in model container [2023-12-21 01:17:39,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:39,252 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 01:17:39,384 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-93.i[916,929] [2023-12-21 01:17:39,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:17:39,623 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 01:17:39,641 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-93.i[916,929] [2023-12-21 01:17:39,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:17:39,811 INFO L206 MainTranslator]: Completed translation [2023-12-21 01:17:39,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39 WrapperNode [2023-12-21 01:17:39,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 01:17:39,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 01:17:39,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 01:17:39,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 01:17:39,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:39,848 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:39,958 INFO L138 Inliner]: procedures = 26, calls = 92, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 709 [2023-12-21 01:17:39,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 01:17:39,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 01:17:39,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 01:17:39,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 01:17:39,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:39,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:39,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:40,047 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 01:17:40,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:40,048 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:40,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:40,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:40,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:40,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:40,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 01:17:40,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 01:17:40,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 01:17:40,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 01:17:40,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (1/1) ... [2023-12-21 01:17:40,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:17:40,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:17:40,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 01:17:40,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 01:17:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 01:17:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 01:17:40,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 01:17:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 01:17:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 01:17:40,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 01:17:40,393 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 01:17:40,395 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 01:17:41,389 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 01:17:41,426 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 01:17:41,426 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 01:17:41,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:17:41 BoogieIcfgContainer [2023-12-21 01:17:41,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 01:17:41,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 01:17:41,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 01:17:41,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 01:17:41,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:17:39" (1/3) ... [2023-12-21 01:17:41,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3454d816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:17:41, skipping insertion in model container [2023-12-21 01:17:41,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:17:39" (2/3) ... [2023-12-21 01:17:41,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3454d816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:17:41, skipping insertion in model container [2023-12-21 01:17:41,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:17:41" (3/3) ... [2023-12-21 01:17:41,434 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-93.i [2023-12-21 01:17:41,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 01:17:41,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 01:17:41,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 01:17:41,501 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;@688c9853, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 01:17:41,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 01:17:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 175 states have (on average 1.5085714285714287) internal successors, (264), 176 states have internal predecessors, (264), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-21 01:17:41,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:17:41,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:17:41,557 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:17:41,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:17:41,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:17:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash -553316803, now seen corresponding path program 1 times [2023-12-21 01:17:41,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:17:41,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527957384] [2023-12-21 01:17:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:41,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:17:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:17:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:17:41,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527957384] [2023-12-21 01:17:41,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 01:17:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173112991] [2023-12-21 01:17:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:41,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:17:41,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:17:41,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:17:42,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 01:17:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:17:42,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 01:17:42,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:17:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2023-12-21 01:17:42,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:17:42,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173112991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:17:42,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:17:42,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 01:17:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991565167] [2023-12-21 01:17:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:17:42,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 01:17:42,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:17:42,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 01:17:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:17:42,654 INFO L87 Difference]: Start difference. First operand has 257 states, 175 states have (on average 1.5085714285714287) internal successors, (264), 176 states have internal predecessors, (264), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-21 01:17:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:17:42,734 INFO L93 Difference]: Finished difference Result 511 states and 921 transitions. [2023-12-21 01:17:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 01:17:42,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) Word has length 531 [2023-12-21 01:17:42,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:17:42,750 INFO L225 Difference]: With dead ends: 511 [2023-12-21 01:17:42,750 INFO L226 Difference]: Without dead ends: 255 [2023-12-21 01:17:42,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:17:42,763 INFO L413 NwaCegarLoop]: 414 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, 414 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:17:42,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 414 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:17:42,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-21 01:17:42,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-12-21 01:17:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 174 states have (on average 1.4885057471264367) internal successors, (259), 174 states have internal predecessors, (259), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-21 01:17:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 417 transitions. [2023-12-21 01:17:42,852 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 417 transitions. Word has length 531 [2023-12-21 01:17:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:17:42,854 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 417 transitions. [2023-12-21 01:17:42,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-21 01:17:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 417 transitions. [2023-12-21 01:17:42,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:17:42,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:17:42,866 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:17:42,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 01:17:43,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 01:17:43,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:17:43,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:17:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash -974344313, now seen corresponding path program 1 times [2023-12-21 01:17:43,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:17:43,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646597376] [2023-12-21 01:17:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:17:43,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:17:43,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102594810] [2023-12-21 01:17:43,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:43,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:17:43,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:17:43,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:17:43,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 01:17:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:17:43,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 01:17:43,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:17:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 2272 proven. 0 refuted. 0 times theorem prover too weak. 10052 trivial. 0 not checked. [2023-12-21 01:17:43,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:17:43,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:17:43,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646597376] [2023-12-21 01:17:43,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:17:43,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102594810] [2023-12-21 01:17:43,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102594810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:17:43,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:17:43,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:17:43,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730249547] [2023-12-21 01:17:43,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:17:43,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:17:43,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:17:43,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:17:43,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:17:43,925 INFO L87 Difference]: Start difference. First operand 255 states and 417 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-21 01:17:44,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:17:44,279 INFO L93 Difference]: Finished difference Result 509 states and 833 transitions. [2023-12-21 01:17:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:17:44,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 531 [2023-12-21 01:17:44,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:17:44,283 INFO L225 Difference]: With dead ends: 509 [2023-12-21 01:17:44,284 INFO L226 Difference]: Without dead ends: 255 [2023-12-21 01:17:44,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:17:44,286 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 370 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:17:44,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 510 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:17:44,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-21 01:17:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-12-21 01:17:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 174 states have internal predecessors, (258), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-21 01:17:44,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 416 transitions. [2023-12-21 01:17:44,312 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 416 transitions. Word has length 531 [2023-12-21 01:17:44,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:17:44,314 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 416 transitions. [2023-12-21 01:17:44,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-21 01:17:44,315 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 416 transitions. [2023-12-21 01:17:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:17:44,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:17:44,325 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:17:44,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 01:17:44,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 01:17:44,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:17:44,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:17:44,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2104469257, now seen corresponding path program 1 times [2023-12-21 01:17:44,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:17:44,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573621284] [2023-12-21 01:17:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:44,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:17:44,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:17:44,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448238929] [2023-12-21 01:17:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:44,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:17:44,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:17:44,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:17:44,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 01:17:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:17:45,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:17:45,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:17:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 01:17:45,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:17:45,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:17:45,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573621284] [2023-12-21 01:17:45,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:17:45,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448238929] [2023-12-21 01:17:45,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448238929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:17:45,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:17:45,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:17:45,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102898021] [2023-12-21 01:17:45,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:17:45,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:17:45,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:17:45,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:17:45,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:17:45,177 INFO L87 Difference]: Start difference. First operand 255 states and 416 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:17:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:17:45,272 INFO L93 Difference]: Finished difference Result 762 states and 1244 transitions. [2023-12-21 01:17:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:17:45,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-21 01:17:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:17:45,280 INFO L225 Difference]: With dead ends: 762 [2023-12-21 01:17:45,280 INFO L226 Difference]: Without dead ends: 508 [2023-12-21 01:17:45,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:17:45,283 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 401 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:17:45,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 806 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:17:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-12-21 01:17:45,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 346. [2023-12-21 01:17:45,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 265 states have (on average 1.5509433962264152) internal successors, (411), 265 states have internal predecessors, (411), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-21 01:17:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 569 transitions. [2023-12-21 01:17:45,330 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 569 transitions. Word has length 531 [2023-12-21 01:17:45,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:17:45,339 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 569 transitions. [2023-12-21 01:17:45,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:17:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 569 transitions. [2023-12-21 01:17:45,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:17:45,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:17:45,349 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:17:45,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 01:17:45,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:17:45,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:17:45,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:17:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1511225785, now seen corresponding path program 1 times [2023-12-21 01:17:45,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:17:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528914829] [2023-12-21 01:17:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:17:45,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:17:45,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89242174] [2023-12-21 01:17:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:45,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:17:45,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:17:45,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:17:45,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 01:17:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:17:46,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 01:17:46,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:17:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 01:17:46,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:17:46,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:17:46,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528914829] [2023-12-21 01:17:46,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:17:46,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89242174] [2023-12-21 01:17:46,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89242174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:17:46,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:17:46,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:17:46,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107491370] [2023-12-21 01:17:46,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:17:46,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:17:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:17:46,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:17:46,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:17:46,133 INFO L87 Difference]: Start difference. First operand 346 states and 569 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:17:46,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:17:46,491 INFO L93 Difference]: Finished difference Result 1192 states and 1944 transitions. [2023-12-21 01:17:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:17:46,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-21 01:17:46,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:17:46,497 INFO L225 Difference]: With dead ends: 1192 [2023-12-21 01:17:46,497 INFO L226 Difference]: Without dead ends: 847 [2023-12-21 01:17:46,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:17:46,499 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 1034 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:17:46,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1751 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:17:46,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-21 01:17:46,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 603. [2023-12-21 01:17:46,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 492 states have (on average 1.5630081300813008) internal successors, (769), 493 states have internal predecessors, (769), 108 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-21 01:17:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 985 transitions. [2023-12-21 01:17:46,559 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 985 transitions. Word has length 531 [2023-12-21 01:17:46,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:17:46,560 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 985 transitions. [2023-12-21 01:17:46,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:17:46,560 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 985 transitions. [2023-12-21 01:17:46,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:17:46,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:17:46,565 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:17:46,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 01:17:46,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:17:46,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:17:46,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:17:46,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1137118603, now seen corresponding path program 1 times [2023-12-21 01:17:46,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:17:46,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323573548] [2023-12-21 01:17:46,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:46,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:17:46,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:17:46,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574039172] [2023-12-21 01:17:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:46,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:17:46,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:17:46,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:17:46,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 01:17:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:17:47,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 01:17:47,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:17:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 01:17:47,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:17:47,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:17:47,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323573548] [2023-12-21 01:17:47,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:17:47,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574039172] [2023-12-21 01:17:47,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574039172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:17:47,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:17:47,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:17:47,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220324538] [2023-12-21 01:17:47,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:17:47,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:17:47,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:17:47,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:17:47,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:17:47,368 INFO L87 Difference]: Start difference. First operand 603 states and 985 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:17:48,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:17:48,208 INFO L93 Difference]: Finished difference Result 1885 states and 3059 transitions. [2023-12-21 01:17:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:17:48,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-21 01:17:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:17:48,217 INFO L225 Difference]: With dead ends: 1885 [2023-12-21 01:17:48,217 INFO L226 Difference]: Without dead ends: 1283 [2023-12-21 01:17:48,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:17:48,219 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1056 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:17:48,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 1807 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 01:17:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2023-12-21 01:17:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 783. [2023-12-21 01:17:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 672 states have (on average 1.5729166666666667) internal successors, (1057), 673 states have internal predecessors, (1057), 108 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-21 01:17:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1273 transitions. [2023-12-21 01:17:48,293 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1273 transitions. Word has length 531 [2023-12-21 01:17:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:17:48,293 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1273 transitions. [2023-12-21 01:17:48,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:17:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1273 transitions. [2023-12-21 01:17:48,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:17:48,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:17:48,299 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:17:48,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 01:17:48,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:17:48,514 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:17:48,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:17:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash -708248563, now seen corresponding path program 1 times [2023-12-21 01:17:48,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:17:48,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644899839] [2023-12-21 01:17:48,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:48,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:17:48,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:17:48,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387145014] [2023-12-21 01:17:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:17:48,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:17:48,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:17:48,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:17:48,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 01:17:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:17:48,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 01:17:48,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 01:24:14,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:24:14,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:14,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644899839] [2023-12-21 01:24:14,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:14,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387145014] [2023-12-21 01:24:14,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387145014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:24:14,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:24:14,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:24:14,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557204580] [2023-12-21 01:24:14,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:24:14,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:24:14,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:14,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:24:14,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:24:14,445 INFO L87 Difference]: Start difference. First operand 783 states and 1273 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:15,451 INFO L93 Difference]: Finished difference Result 4145 states and 6703 transitions. [2023-12-21 01:24:15,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:24:15,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-21 01:24:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:15,467 INFO L225 Difference]: With dead ends: 4145 [2023-12-21 01:24:15,467 INFO L226 Difference]: Without dead ends: 3363 [2023-12-21 01:24:15,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:24:15,471 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1332 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:15,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 1983 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 01:24:15,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2023-12-21 01:24:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 2684. [2023-12-21 01:24:15,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2463 states have (on average 1.5801867641088103) internal successors, (3892), 2465 states have internal predecessors, (3892), 216 states have call successors, (216), 4 states have call predecessors, (216), 4 states have return successors, (216), 214 states have call predecessors, (216), 216 states have call successors, (216) [2023-12-21 01:24:15,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4324 transitions. [2023-12-21 01:24:15,609 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4324 transitions. Word has length 531 [2023-12-21 01:24:15,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:15,610 INFO L495 AbstractCegarLoop]: Abstraction has 2684 states and 4324 transitions. [2023-12-21 01:24:15,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:15,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4324 transitions. [2023-12-21 01:24:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:24:15,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:15,618 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:15,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 01:24:15,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:15,821 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:15,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1517595189, now seen corresponding path program 1 times [2023-12-21 01:24:15,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:15,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417115888] [2023-12-21 01:24:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:15,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:15,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67695854] [2023-12-21 01:24:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:15,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:15,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:15,900 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:15,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 01:24:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:16,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:24:16,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 01:24:16,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:24:16,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:16,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417115888] [2023-12-21 01:24:16,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:16,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67695854] [2023-12-21 01:24:16,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67695854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:24:16,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:24:16,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:24:16,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054316368] [2023-12-21 01:24:16,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:24:16,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:24:16,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:16,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:24:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:24:16,835 INFO L87 Difference]: Start difference. First operand 2684 states and 4324 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:18,265 INFO L93 Difference]: Finished difference Result 8632 states and 13866 transitions. [2023-12-21 01:24:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:24:18,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-21 01:24:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:18,290 INFO L225 Difference]: With dead ends: 8632 [2023-12-21 01:24:18,290 INFO L226 Difference]: Without dead ends: 5949 [2023-12-21 01:24:18,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:24:18,298 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 2630 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:18,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2630 Valid, 1642 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 01:24:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5949 states. [2023-12-21 01:24:18,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5949 to 5001. [2023-12-21 01:24:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5001 states, 4614 states have (on average 1.5728218465539663) internal successors, (7257), 4618 states have internal predecessors, (7257), 378 states have call successors, (378), 8 states have call predecessors, (378), 8 states have return successors, (378), 374 states have call predecessors, (378), 378 states have call successors, (378) [2023-12-21 01:24:18,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5001 states to 5001 states and 8013 transitions. [2023-12-21 01:24:18,557 INFO L78 Accepts]: Start accepts. Automaton has 5001 states and 8013 transitions. Word has length 531 [2023-12-21 01:24:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:18,557 INFO L495 AbstractCegarLoop]: Abstraction has 5001 states and 8013 transitions. [2023-12-21 01:24:18,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5001 states and 8013 transitions. [2023-12-21 01:24:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:24:18,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:18,567 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:18,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 01:24:18,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:18,777 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:18,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:18,777 INFO L85 PathProgramCache]: Analyzing trace with hash 207093771, now seen corresponding path program 1 times [2023-12-21 01:24:18,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:18,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892031449] [2023-12-21 01:24:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:18,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:18,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:18,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198581878] [2023-12-21 01:24:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:18,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:18,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:18,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:18,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 01:24:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:19,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:24:19,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5370 proven. 72 refuted. 0 times theorem prover too weak. 6882 trivial. 0 not checked. [2023-12-21 01:24:19,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:24:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-21 01:24:19,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:19,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892031449] [2023-12-21 01:24:19,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:19,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198581878] [2023-12-21 01:24:19,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198581878] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:24:19,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:24:19,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 01:24:19,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52054383] [2023-12-21 01:24:19,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:24:19,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:24:19,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:19,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:24:19,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:24:19,735 INFO L87 Difference]: Start difference. First operand 5001 states and 8013 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-21 01:24:20,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:20,308 INFO L93 Difference]: Finished difference Result 9207 states and 14750 transitions. [2023-12-21 01:24:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:24:20,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 531 [2023-12-21 01:24:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:20,324 INFO L225 Difference]: With dead ends: 9207 [2023-12-21 01:24:20,325 INFO L226 Difference]: Without dead ends: 4089 [2023-12-21 01:24:20,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1054 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:24:20,333 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 725 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:20,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 794 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:24:20,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4089 states. [2023-12-21 01:24:20,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4089 to 4024. [2023-12-21 01:24:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 3663 states have (on average 1.5511875511875513) internal successors, (5682), 3666 states have internal predecessors, (5682), 349 states have call successors, (349), 11 states have call predecessors, (349), 11 states have return successors, (349), 346 states have call predecessors, (349), 349 states have call successors, (349) [2023-12-21 01:24:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 6380 transitions. [2023-12-21 01:24:20,512 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 6380 transitions. Word has length 531 [2023-12-21 01:24:20,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:20,513 INFO L495 AbstractCegarLoop]: Abstraction has 4024 states and 6380 transitions. [2023-12-21 01:24:20,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-21 01:24:20,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 6380 transitions. [2023-12-21 01:24:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:24:20,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:20,520 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:20,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 01:24:20,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-21 01:24:20,737 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:20,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:20,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1058737287, now seen corresponding path program 1 times [2023-12-21 01:24:20,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:20,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17816087] [2023-12-21 01:24:20,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:20,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:20,803 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:20,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283940668] [2023-12-21 01:24:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:20,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:20,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:20,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:20,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 01:24:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:21,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:24:21,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5898 proven. 144 refuted. 0 times theorem prover too weak. 6282 trivial. 0 not checked. [2023-12-21 01:24:21,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:24:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-21 01:24:21,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:21,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17816087] [2023-12-21 01:24:21,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:21,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283940668] [2023-12-21 01:24:21,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283940668] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:24:21,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:24:21,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 01:24:21,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145461304] [2023-12-21 01:24:21,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:24:21,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:24:21,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:24:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:24:21,874 INFO L87 Difference]: Start difference. First operand 4024 states and 6380 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2023-12-21 01:24:22,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:22,319 INFO L93 Difference]: Finished difference Result 5092 states and 8033 transitions. [2023-12-21 01:24:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:24:22,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 531 [2023-12-21 01:24:22,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:22,325 INFO L225 Difference]: With dead ends: 5092 [2023-12-21 01:24:22,325 INFO L226 Difference]: Without dead ends: 1065 [2023-12-21 01:24:22,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1054 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:24:22,332 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 236 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:22,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 746 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:24:22,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-21 01:24:22,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1020. [2023-12-21 01:24:22,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 796 states have (on average 1.4585427135678393) internal successors, (1161), 797 states have internal predecessors, (1161), 212 states have call successors, (212), 11 states have call predecessors, (212), 11 states have return successors, (212), 211 states have call predecessors, (212), 212 states have call successors, (212) [2023-12-21 01:24:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1585 transitions. [2023-12-21 01:24:22,453 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1585 transitions. Word has length 531 [2023-12-21 01:24:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:22,453 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1585 transitions. [2023-12-21 01:24:22,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2023-12-21 01:24:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1585 transitions. [2023-12-21 01:24:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:24:22,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:22,459 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:22,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 01:24:22,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:22,669 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:22,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1850751029, now seen corresponding path program 1 times [2023-12-21 01:24:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:22,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215794334] [2023-12-21 01:24:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:22,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:22,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:22,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105882117] [2023-12-21 01:24:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:22,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:22,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:22,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:22,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 01:24:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:23,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:24:23,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 01:24:23,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:24:23,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:23,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215794334] [2023-12-21 01:24:23,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:23,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105882117] [2023-12-21 01:24:23,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105882117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:24:23,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:24:23,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:24:23,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113924332] [2023-12-21 01:24:23,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:24:23,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:24:23,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:23,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:24:23,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:24:23,178 INFO L87 Difference]: Start difference. First operand 1020 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:23,302 INFO L93 Difference]: Finished difference Result 2064 states and 3204 transitions. [2023-12-21 01:24:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:24:23,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-21 01:24:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:23,308 INFO L225 Difference]: With dead ends: 2064 [2023-12-21 01:24:23,308 INFO L226 Difference]: Without dead ends: 1045 [2023-12-21 01:24:23,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:24:23,311 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 378 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:23,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 783 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:24:23,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-12-21 01:24:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 933. [2023-12-21 01:24:23,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 683 states have (on average 1.4099560761346999) internal successors, (963), 683 states have internal predecessors, (963), 237 states have call successors, (237), 12 states have call predecessors, (237), 12 states have return successors, (237), 237 states have call predecessors, (237), 237 states have call successors, (237) [2023-12-21 01:24:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1437 transitions. [2023-12-21 01:24:23,400 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1437 transitions. Word has length 531 [2023-12-21 01:24:23,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:23,401 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1437 transitions. [2023-12-21 01:24:23,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:23,401 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1437 transitions. [2023-12-21 01:24:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:24:23,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:23,405 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:23,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 01:24:23,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 01:24:23,614 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:23,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash -584037935, now seen corresponding path program 1 times [2023-12-21 01:24:23,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:23,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73464392] [2023-12-21 01:24:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:23,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:23,670 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:23,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437746908] [2023-12-21 01:24:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:23,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:23,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:23,672 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:23,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 01:24:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:24,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 01:24:24,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 01:24:24,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:24:24,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:24,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73464392] [2023-12-21 01:24:24,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:24,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437746908] [2023-12-21 01:24:24,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437746908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:24:24,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:24:24,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:24:24,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546281467] [2023-12-21 01:24:24,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:24:24,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:24:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:24:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:24:24,610 INFO L87 Difference]: Start difference. First operand 933 states and 1437 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 6 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:26,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:26,000 INFO L93 Difference]: Finished difference Result 2564 states and 3934 transitions. [2023-12-21 01:24:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:24:26,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 6 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-21 01:24:26,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:26,009 INFO L225 Difference]: With dead ends: 2564 [2023-12-21 01:24:26,009 INFO L226 Difference]: Without dead ends: 1632 [2023-12-21 01:24:26,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:24:26,013 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 1178 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:26,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 2416 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 01:24:26,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-12-21 01:24:26,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1222. [2023-12-21 01:24:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 887 states have (on average 1.3957158962795941) internal successors, (1238), 887 states have internal predecessors, (1238), 316 states have call successors, (316), 18 states have call predecessors, (316), 18 states have return successors, (316), 316 states have call predecessors, (316), 316 states have call successors, (316) [2023-12-21 01:24:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1870 transitions. [2023-12-21 01:24:26,153 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1870 transitions. Word has length 531 [2023-12-21 01:24:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:26,153 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 1870 transitions. [2023-12-21 01:24:26,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 6 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1870 transitions. [2023-12-21 01:24:26,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:24:26,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:26,158 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:26,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 01:24:26,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 01:24:26,368 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:26,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1509475725, now seen corresponding path program 1 times [2023-12-21 01:24:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378682839] [2023-12-21 01:24:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:26,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:26,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:26,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738332495] [2023-12-21 01:24:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:26,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:26,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:26,442 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:26,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 01:24:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:26,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 01:24:26,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 4260 proven. 183 refuted. 0 times theorem prover too weak. 7881 trivial. 0 not checked. [2023-12-21 01:24:27,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:24:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 51 proven. 183 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-21 01:24:27,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:27,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378682839] [2023-12-21 01:24:27,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:27,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738332495] [2023-12-21 01:24:27,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738332495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:24:27,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:24:27,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 01:24:27,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496283001] [2023-12-21 01:24:27,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:24:27,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:24:27,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:27,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:24:27,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:24:27,576 INFO L87 Difference]: Start difference. First operand 1222 states and 1870 transitions. Second operand has 10 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 3 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 3 states have call predecessors, (141), 3 states have call successors, (141) [2023-12-21 01:24:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:28,082 INFO L93 Difference]: Finished difference Result 2483 states and 3775 transitions. [2023-12-21 01:24:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:24:28,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 3 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 3 states have call predecessors, (141), 3 states have call successors, (141) Word has length 531 [2023-12-21 01:24:28,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:28,089 INFO L225 Difference]: With dead ends: 2483 [2023-12-21 01:24:28,089 INFO L226 Difference]: Without dead ends: 1262 [2023-12-21 01:24:28,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1052 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-21 01:24:28,092 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 901 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:28,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 942 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:24:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-12-21 01:24:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1238. [2023-12-21 01:24:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 899 states have (on average 1.385984427141268) internal successors, (1246), 899 states have internal predecessors, (1246), 316 states have call successors, (316), 22 states have call predecessors, (316), 22 states have return successors, (316), 316 states have call predecessors, (316), 316 states have call successors, (316) [2023-12-21 01:24:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1878 transitions. [2023-12-21 01:24:28,246 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1878 transitions. Word has length 531 [2023-12-21 01:24:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:28,247 INFO L495 AbstractCegarLoop]: Abstraction has 1238 states and 1878 transitions. [2023-12-21 01:24:28,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 3 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 3 states have call predecessors, (141), 3 states have call successors, (141) [2023-12-21 01:24:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1878 transitions. [2023-12-21 01:24:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-21 01:24:28,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:28,251 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:28,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 01:24:28,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 01:24:28,461 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:28,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1946457909, now seen corresponding path program 1 times [2023-12-21 01:24:28,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:28,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454766790] [2023-12-21 01:24:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:28,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:28,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:28,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328321131] [2023-12-21 01:24:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:28,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:28,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:28,523 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:28,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 01:24:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:29,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 01:24:29,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 01:24:30,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:24:30,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:30,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454766790] [2023-12-21 01:24:30,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:30,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328321131] [2023-12-21 01:24:30,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328321131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:24:30,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:24:30,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:24:30,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529934072] [2023-12-21 01:24:30,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:24:30,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:24:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:30,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:24:30,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:24:30,003 INFO L87 Difference]: Start difference. First operand 1238 states and 1878 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:30,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:30,433 INFO L93 Difference]: Finished difference Result 3019 states and 4582 transitions. [2023-12-21 01:24:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:24:30,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-21 01:24:30,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:30,442 INFO L225 Difference]: With dead ends: 3019 [2023-12-21 01:24:30,442 INFO L226 Difference]: Without dead ends: 1782 [2023-12-21 01:24:30,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:24:30,446 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 415 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:30,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1406 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:24:30,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2023-12-21 01:24:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1395. [2023-12-21 01:24:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 971 states have (on average 1.361483007209063) internal successors, (1322), 971 states have internal predecessors, (1322), 395 states have call successors, (395), 28 states have call predecessors, (395), 28 states have return successors, (395), 395 states have call predecessors, (395), 395 states have call successors, (395) [2023-12-21 01:24:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2112 transitions. [2023-12-21 01:24:30,650 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2112 transitions. Word has length 531 [2023-12-21 01:24:30,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:30,651 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 2112 transitions. [2023-12-21 01:24:30,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2112 transitions. [2023-12-21 01:24:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-21 01:24:30,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:30,655 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:30,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 01:24:30,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 01:24:30,865 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:30,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:30,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1166426805, now seen corresponding path program 1 times [2023-12-21 01:24:30,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:30,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628447107] [2023-12-21 01:24:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:30,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:30,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196133171] [2023-12-21 01:24:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:30,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:30,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:30,926 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:30,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 01:24:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:31,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 01:24:31,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 9061 proven. 675 refuted. 0 times theorem prover too weak. 2588 trivial. 0 not checked. [2023-12-21 01:24:34,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:24:35,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:35,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628447107] [2023-12-21 01:24:35,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:35,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196133171] [2023-12-21 01:24:35,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196133171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 01:24:35,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:24:35,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-12-21 01:24:35,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236097484] [2023-12-21 01:24:35,319 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 01:24:35,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 01:24:35,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:35,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 01:24:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2023-12-21 01:24:35,321 INFO L87 Difference]: Start difference. First operand 1395 states and 2112 transitions. Second operand has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 20 states have internal predecessors, (170), 7 states have call successors, (79), 7 states have call predecessors, (79), 11 states have return successors, (79), 7 states have call predecessors, (79), 7 states have call successors, (79) [2023-12-21 01:24:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:37,147 INFO L93 Difference]: Finished difference Result 3230 states and 4751 transitions. [2023-12-21 01:24:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 01:24:37,147 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 20 states have internal predecessors, (170), 7 states have call successors, (79), 7 states have call predecessors, (79), 11 states have return successors, (79), 7 states have call predecessors, (79), 7 states have call successors, (79) Word has length 532 [2023-12-21 01:24:37,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:37,169 INFO L225 Difference]: With dead ends: 3230 [2023-12-21 01:24:37,169 INFO L226 Difference]: Without dead ends: 1993 [2023-12-21 01:24:37,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 01:24:37,174 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1104 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 1827 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:37,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1802 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1827 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 01:24:37,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2023-12-21 01:24:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1626. [2023-12-21 01:24:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1167 states have (on average 1.3367609254498716) internal successors, (1560), 1167 states have internal predecessors, (1560), 395 states have call successors, (395), 63 states have call predecessors, (395), 63 states have return successors, (395), 395 states have call predecessors, (395), 395 states have call successors, (395) [2023-12-21 01:24:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2350 transitions. [2023-12-21 01:24:37,385 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2350 transitions. Word has length 532 [2023-12-21 01:24:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:37,386 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 2350 transitions. [2023-12-21 01:24:37,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 20 states have internal predecessors, (170), 7 states have call successors, (79), 7 states have call predecessors, (79), 11 states have return successors, (79), 7 states have call predecessors, (79), 7 states have call successors, (79) [2023-12-21 01:24:37,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2350 transitions. [2023-12-21 01:24:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-21 01:24:37,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:37,391 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:37,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 01:24:37,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:37,602 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:37,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1300440311, now seen corresponding path program 1 times [2023-12-21 01:24:37,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:37,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582639011] [2023-12-21 01:24:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:37,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:37,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:37,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689843829] [2023-12-21 01:24:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:37,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:37,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:37,662 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:37,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 01:24:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:38,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 01:24:38,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-21 01:24:40,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:24:40,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:40,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582639011] [2023-12-21 01:24:40,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689843829] [2023-12-21 01:24:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689843829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:24:40,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:24:40,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:24:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167358744] [2023-12-21 01:24:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:24:40,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:24:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:40,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:24:40,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:24:40,066 INFO L87 Difference]: Start difference. First operand 1626 states and 2350 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:40,474 INFO L93 Difference]: Finished difference Result 3518 states and 5131 transitions. [2023-12-21 01:24:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:24:40,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 532 [2023-12-21 01:24:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:40,481 INFO L225 Difference]: With dead ends: 3518 [2023-12-21 01:24:40,482 INFO L226 Difference]: Without dead ends: 2078 [2023-12-21 01:24:40,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:24:40,485 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 249 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:40,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1145 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:24:40,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2023-12-21 01:24:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1630. [2023-12-21 01:24:40,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1171 states have (on average 1.3373185311699403) internal successors, (1566), 1171 states have internal predecessors, (1566), 395 states have call successors, (395), 63 states have call predecessors, (395), 63 states have return successors, (395), 395 states have call predecessors, (395), 395 states have call successors, (395) [2023-12-21 01:24:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2356 transitions. [2023-12-21 01:24:40,679 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2356 transitions. Word has length 532 [2023-12-21 01:24:40,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:40,679 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2356 transitions. [2023-12-21 01:24:40,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-21 01:24:40,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2356 transitions. [2023-12-21 01:24:40,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-21 01:24:40,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:40,683 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:40,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 01:24:40,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 01:24:40,894 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:40,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1936688907, now seen corresponding path program 1 times [2023-12-21 01:24:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:40,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210186744] [2023-12-21 01:24:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:40,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:40,949 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:40,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676145588] [2023-12-21 01:24:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:40,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:40,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:40,951 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:40,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 01:24:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:41,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 01:24:41,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 3909 proven. 536 refuted. 0 times theorem prover too weak. 7879 trivial. 0 not checked. [2023-12-21 01:24:42,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:24:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 291 proven. 174 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-12-21 01:24:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210186744] [2023-12-21 01:24:44,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676145588] [2023-12-21 01:24:44,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676145588] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:24:44,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:24:44,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-21 01:24:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424186593] [2023-12-21 01:24:44,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:24:44,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 01:24:44,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 01:24:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-21 01:24:44,408 INFO L87 Difference]: Start difference. First operand 1630 states and 2356 transitions. Second operand has 26 states, 25 states have (on average 10.36) internal successors, (259), 24 states have internal predecessors, (259), 6 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) [2023-12-21 01:24:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:51,241 INFO L93 Difference]: Finished difference Result 8808 states and 12967 transitions. [2023-12-21 01:24:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-21 01:24:51,241 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 10.36) internal successors, (259), 24 states have internal predecessors, (259), 6 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) Word has length 532 [2023-12-21 01:24:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:51,258 INFO L225 Difference]: With dead ends: 8808 [2023-12-21 01:24:51,259 INFO L226 Difference]: Without dead ends: 7368 [2023-12-21 01:24:51,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1117 GetRequests, 1048 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1183, Invalid=3787, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 01:24:51,266 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 5819 mSDsluCounter, 7030 mSDsCounter, 0 mSdLazyCounter, 4491 mSolverCounterSat, 2268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5919 SdHoareTripleChecker+Valid, 7560 SdHoareTripleChecker+Invalid, 6759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2268 IncrementalHoareTripleChecker+Valid, 4491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:51,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5919 Valid, 7560 Invalid, 6759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2268 Valid, 4491 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-21 01:24:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2023-12-21 01:24:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 2941. [2023-12-21 01:24:51,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2941 states, 2201 states have (on average 1.3507496592457973) internal successors, (2973), 2201 states have internal predecessors, (2973), 632 states have call successors, (632), 107 states have call predecessors, (632), 107 states have return successors, (632), 632 states have call predecessors, (632), 632 states have call successors, (632) [2023-12-21 01:24:51,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4237 transitions. [2023-12-21 01:24:51,720 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4237 transitions. Word has length 532 [2023-12-21 01:24:51,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:24:51,720 INFO L495 AbstractCegarLoop]: Abstraction has 2941 states and 4237 transitions. [2023-12-21 01:24:51,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 10.36) internal successors, (259), 24 states have internal predecessors, (259), 6 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) [2023-12-21 01:24:51,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4237 transitions. [2023-12-21 01:24:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-21 01:24:51,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:24:51,726 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:24:51,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 01:24:51,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 01:24:51,937 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:24:51,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:24:51,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1698746867, now seen corresponding path program 1 times [2023-12-21 01:24:51,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:24:51,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515830463] [2023-12-21 01:24:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:51,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:24:51,991 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:24:51,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746849647] [2023-12-21 01:24:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:24:51,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:24:51,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:24:51,992 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:24:52,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 01:24:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:24:52,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 01:24:52,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:24:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 2680 proven. 411 refuted. 0 times theorem prover too weak. 9233 trivial. 0 not checked. [2023-12-21 01:24:54,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:24:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 24 proven. 210 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-21 01:24:56,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:24:56,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515830463] [2023-12-21 01:24:56,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:24:56,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746849647] [2023-12-21 01:24:56,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746849647] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:24:56,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:24:56,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2023-12-21 01:24:56,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703018796] [2023-12-21 01:24:56,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:24:56,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 01:24:56,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:24:56,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 01:24:56,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-12-21 01:24:56,097 INFO L87 Difference]: Start difference. First operand 2941 states and 4237 transitions. Second operand has 19 states, 19 states have (on average 12.789473684210526) internal successors, (243), 19 states have internal predecessors, (243), 5 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 5 states have call predecessors, (158), 5 states have call successors, (158) [2023-12-21 01:24:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:24:59,825 INFO L93 Difference]: Finished difference Result 14659 states and 21492 transitions. [2023-12-21 01:24:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 01:24:59,825 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.789473684210526) internal successors, (243), 19 states have internal predecessors, (243), 5 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 5 states have call predecessors, (158), 5 states have call successors, (158) Word has length 532 [2023-12-21 01:24:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:24:59,849 INFO L225 Difference]: With dead ends: 14659 [2023-12-21 01:24:59,849 INFO L226 Difference]: Without dead ends: 11961 [2023-12-21 01:24:59,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1049 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 01:24:59,857 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 4216 mSDsluCounter, 4477 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4293 SdHoareTripleChecker+Valid, 5002 SdHoareTripleChecker+Invalid, 3642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:24:59,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4293 Valid, 5002 Invalid, 3642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [819 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 01:24:59,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11961 states. [2023-12-21 01:25:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11961 to 7673. [2023-12-21 01:25:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7673 states, 5821 states have (on average 1.3566397526198248) internal successors, (7897), 5821 states have internal predecessors, (7897), 1580 states have call successors, (1580), 271 states have call predecessors, (1580), 271 states have return successors, (1580), 1580 states have call predecessors, (1580), 1580 states have call successors, (1580) [2023-12-21 01:25:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7673 states to 7673 states and 11057 transitions. [2023-12-21 01:25:01,024 INFO L78 Accepts]: Start accepts. Automaton has 7673 states and 11057 transitions. Word has length 532 [2023-12-21 01:25:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:25:01,025 INFO L495 AbstractCegarLoop]: Abstraction has 7673 states and 11057 transitions. [2023-12-21 01:25:01,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.789473684210526) internal successors, (243), 19 states have internal predecessors, (243), 5 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 5 states have call predecessors, (158), 5 states have call successors, (158) [2023-12-21 01:25:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 7673 states and 11057 transitions. [2023-12-21 01:25:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-21 01:25:01,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:25:01,031 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:25:01,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 01:25:01,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 01:25:01,243 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:25:01,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:25:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1254846193, now seen corresponding path program 1 times [2023-12-21 01:25:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:25:01,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888407444] [2023-12-21 01:25:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:25:01,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:25:01,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:25:01,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175245751] [2023-12-21 01:25:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:25:01,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:25:01,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:25:01,298 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:25:01,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 01:25:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:25:06,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-21 01:25:06,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:25:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6725 proven. 1161 refuted. 0 times theorem prover too weak. 4438 trivial. 0 not checked. [2023-12-21 01:25:16,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-21 01:31:49,981 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 [2023-12-21 01:31:49,981 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 01:31:50,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 01:31:50,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 01:31:50,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 01:31:50,333 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 533 with TraceHistMax 79,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-28-4-3-4-2-4-3-2-2-2-4-3-3-5-3-5-3-5-3-5-3-5-2-3-1 context. [2023-12-21 01:31:50,337 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:31:50,341 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 01:31:50,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 01:31:50 BoogieIcfgContainer [2023-12-21 01:31:50,343 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 01:31:50,346 INFO L158 Benchmark]: Toolchain (without parser) took 851166.15ms. Allocated memory was 293.6MB in the beginning and 1.3GB in the end (delta: 960.5MB). Free memory was 238.7MB in the beginning and 537.8MB in the end (delta: -299.1MB). Peak memory consumption was 836.7MB. Max. memory is 8.0GB. [2023-12-21 01:31:50,346 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 200.3MB. Free memory is still 150.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 01:31:50,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 628.91ms. Allocated memory is still 293.6MB. Free memory was 238.5MB in the beginning and 248.6MB in the end (delta: -10.1MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-21 01:31:50,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 146.88ms. Allocated memory is still 293.6MB. Free memory was 248.6MB in the beginning and 226.6MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-21 01:31:50,347 INFO L158 Benchmark]: Boogie Preprocessor took 218.18ms. Allocated memory is still 293.6MB. Free memory was 226.6MB in the beginning and 176.3MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2023-12-21 01:31:50,347 INFO L158 Benchmark]: RCFGBuilder took 1246.34ms. Allocated memory is still 293.6MB. Free memory was 175.8MB in the beginning and 189.3MB in the end (delta: -13.5MB). Peak memory consumption was 60.4MB. Max. memory is 8.0GB. [2023-12-21 01:31:50,348 INFO L158 Benchmark]: TraceAbstraction took 848916.74ms. Allocated memory was 293.6MB in the beginning and 1.3GB in the end (delta: 960.5MB). Free memory was 188.8MB in the beginning and 537.8MB in the end (delta: -349.0MB). Peak memory consumption was 785.7MB. Max. memory is 8.0GB. [2023-12-21 01:31:50,349 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 200.3MB. Free memory is still 150.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 628.91ms. Allocated memory is still 293.6MB. Free memory was 238.5MB in the beginning and 248.6MB in the end (delta: -10.1MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 146.88ms. Allocated memory is still 293.6MB. Free memory was 248.6MB in the beginning and 226.6MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 218.18ms. Allocated memory is still 293.6MB. Free memory was 226.6MB in the beginning and 176.3MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1246.34ms. Allocated memory is still 293.6MB. Free memory was 175.8MB in the beginning and 189.3MB in the end (delta: -13.5MB). Peak memory consumption was 60.4MB. Max. memory is 8.0GB. * TraceAbstraction took 848916.74ms. Allocated memory was 293.6MB in the beginning and 1.3GB in the end (delta: 960.5MB). Free memory was 188.8MB in the beginning and 537.8MB in the end (delta: -349.0MB). Peak memory consumption was 785.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 533 with TraceHistMax 79,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-28-4-3-4-2-4-3-2-2-2-4-3-3-5-3-5-3-5-3-5-3-5-2-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 257 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 848.9s, OverallIterations: 18, TraceHistogramMax: 79, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 20.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22328 SdHoareTripleChecker+Valid, 14.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22044 mSDsluCounter, 31509 SdHoareTripleChecker+Invalid, 12.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23988 mSDsCounter, 4893 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13592 IncrementalHoareTripleChecker+Invalid, 18485 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4893 mSolverCounterUnsat, 7521 mSDtfsCounter, 13592 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11986 GetRequests, 11749 SyntacticMatches, 5 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2622 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7673occurred in iteration=17, InterpolantAutomatonStates: 209, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 13106 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 401.3s InterpolantComputationTime, 9562 NumberOfCodeBlocks, 9562 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 11666 ConstructedInterpolants, 0 QuantifiedInterpolants, 54909 SizeOfPredicates, 134 NumberOfNonLiveVariables, 22680 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 268324/271128 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