/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-88.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:48:44,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:48:44,403 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:48:44,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:48:44,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:48:44,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:48:44,431 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:48:44,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:48:44,432 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:48:44,435 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:48:44,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:48:44,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:48:44,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:48:44,437 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:48:44,437 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:48:44,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:48:44,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:48:44,437 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:48:44,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:48:44,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:48:44,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:48:44,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:48:44,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:48:44,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:48:44,439 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:48:44,440 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:48:44,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:48:44,440 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:48:44,440 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:48:44,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:48:44,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:48:44,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:48:44,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:48:44,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:48:44,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:48:44,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:48:44,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:48:44,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:48:44,442 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:48:44,442 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:48:44,443 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:48:44,443 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:48:44,443 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:48:44,443 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:48:44,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:48:44,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:48:44,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:48:44,668 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:48:44,668 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:48:44,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-88.i [2023-12-15 20:48:45,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:48:45,896 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:48:45,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-88.i [2023-12-15 20:48:45,910 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e877b45f2/f05d67e19c5540ffba607753ebdf17ea/FLAG37959e30e [2023-12-15 20:48:45,926 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e877b45f2/f05d67e19c5540ffba607753ebdf17ea [2023-12-15 20:48:45,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:48:45,929 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:48:45,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:48:45,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:48:45,935 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:48:45,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:48:45" (1/1) ... [2023-12-15 20:48:45,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de53fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:45, skipping insertion in model container [2023-12-15 20:48:45,937 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:48:45" (1/1) ... [2023-12-15 20:48:45,971 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:48:46,080 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_loopvsstraightlinecode_100-1loop_file-88.i[916,929] [2023-12-15 20:48:46,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:48:46,153 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:48:46,168 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_loopvsstraightlinecode_100-1loop_file-88.i[916,929] [2023-12-15 20:48:46,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:48:46,220 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:48:46,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46 WrapperNode [2023-12-15 20:48:46,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:48:46,221 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:48:46,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:48:46,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:48:46,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,295 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 282 [2023-12-15 20:48:46,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:48:46,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:48:46,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:48:46,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:48:46,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,383 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 20:48:46,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:48:46,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:48:46,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:48:46,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:48:46,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (1/1) ... [2023-12-15 20:48:46,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:48:46,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:46,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 20:48:46,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 20:48:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:48:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:48:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:48:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:48:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:48:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:48:46,619 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:48:46,622 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:48:47,006 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:48:47,037 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:48:47,037 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:48:47,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:48:47 BoogieIcfgContainer [2023-12-15 20:48:47,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:48:47,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:48:47,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:48:47,041 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:48:47,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:48:45" (1/3) ... [2023-12-15 20:48:47,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0435c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:48:47, skipping insertion in model container [2023-12-15 20:48:47,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:48:46" (2/3) ... [2023-12-15 20:48:47,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0435c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:48:47, skipping insertion in model container [2023-12-15 20:48:47,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:48:47" (3/3) ... [2023-12-15 20:48:47,043 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-88.i [2023-12-15 20:48:47,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:48:47,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:48:47,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:48:47,097 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;@8dda51a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:48:47,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:48:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 74 states have (on average 1.5) internal successors, (111), 75 states have internal predecessors, (111), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 20:48:47,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-15 20:48:47,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:48:47,111 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:48:47,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:48:47,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:48:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1157428917, now seen corresponding path program 1 times [2023-12-15 20:48:47,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:48:47,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240269567] [2023-12-15 20:48:47,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:47,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:48:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:47,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:48:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240269567] [2023-12-15 20:48:47,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:48:47,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962663546] [2023-12-15 20:48:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:47,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:47,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:47,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:48:47,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:48:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:47,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:48:47,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:48:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-12-15 20:48:47,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:48:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962663546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:48:47,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:48:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:48:47,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404556981] [2023-12-15 20:48:47,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:48:47,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:48:47,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:48:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:48:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:48:47,600 INFO L87 Difference]: Start difference. First operand has 105 states, 74 states have (on average 1.5) internal successors, (111), 75 states have internal predecessors, (111), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-15 20:48:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:48:47,655 INFO L93 Difference]: Finished difference Result 209 states and 361 transitions. [2023-12-15 20:48:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:48:47,657 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) Word has length 187 [2023-12-15 20:48:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:48:47,664 INFO L225 Difference]: With dead ends: 209 [2023-12-15 20:48:47,664 INFO L226 Difference]: Without dead ends: 103 [2023-12-15 20:48:47,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:48:47,673 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:48:47,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:48:47,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-15 20:48:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-12-15 20:48:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 73 states have (on average 1.452054794520548) internal successors, (106), 73 states have internal predecessors, (106), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 20:48:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 162 transitions. [2023-12-15 20:48:47,721 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 162 transitions. Word has length 187 [2023-12-15 20:48:47,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:48:47,721 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 162 transitions. [2023-12-15 20:48:47,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-15 20:48:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 162 transitions. [2023-12-15 20:48:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-15 20:48:47,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:48:47,724 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:48:47,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 20:48:47,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 20:48:47,930 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:48:47,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:48:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1905067581, now seen corresponding path program 1 times [2023-12-15 20:48:47,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:48:47,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904026725] [2023-12-15 20:48:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:47,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:48:47,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:48:47,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31839279] [2023-12-15 20:48:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:47,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:47,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:47,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:48:48,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:48:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:48,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:48:48,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:48:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:48:50,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:48:50,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:48:50,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904026725] [2023-12-15 20:48:50,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:48:50,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31839279] [2023-12-15 20:48:50,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31839279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:48:50,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:48:50,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:48:50,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327130066] [2023-12-15 20:48:50,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:48:50,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:48:50,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:48:50,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:48:50,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:48:50,328 INFO L87 Difference]: Start difference. First operand 103 states and 162 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:51,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:48:51,039 INFO L93 Difference]: Finished difference Result 465 states and 727 transitions. [2023-12-15 20:48:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:48:51,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 187 [2023-12-15 20:48:51,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:48:51,046 INFO L225 Difference]: With dead ends: 465 [2023-12-15 20:48:51,046 INFO L226 Difference]: Without dead ends: 363 [2023-12-15 20:48:51,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:48:51,049 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 454 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:48:51,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 734 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:48:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-15 20:48:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 207. [2023-12-15 20:48:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 148 states have (on average 1.4391891891891893) internal successors, (213), 148 states have internal predecessors, (213), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-15 20:48:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 325 transitions. [2023-12-15 20:48:51,102 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 325 transitions. Word has length 187 [2023-12-15 20:48:51,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:48:51,104 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 325 transitions. [2023-12-15 20:48:51,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 325 transitions. [2023-12-15 20:48:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-15 20:48:51,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:48:51,109 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:48:51,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 20:48:51,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 20:48:51,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:48:51,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:48:51,315 INFO L85 PathProgramCache]: Analyzing trace with hash 893950331, now seen corresponding path program 1 times [2023-12-15 20:48:51,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:48:51,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806088688] [2023-12-15 20:48:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:51,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:48:51,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:48:51,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184406416] [2023-12-15 20:48:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:51,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:51,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:51,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:48:51,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:48:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:51,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:48:51,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:48:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:48:51,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:48:51,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:48:51,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806088688] [2023-12-15 20:48:51,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:48:51,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184406416] [2023-12-15 20:48:51,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184406416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:48:51,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:48:51,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:48:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216887167] [2023-12-15 20:48:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:48:51,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:48:51,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:48:51,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:48:51,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:48:51,882 INFO L87 Difference]: Start difference. First operand 207 states and 325 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:48:51,941 INFO L93 Difference]: Finished difference Result 520 states and 815 transitions. [2023-12-15 20:48:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:48:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 187 [2023-12-15 20:48:51,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:48:51,946 INFO L225 Difference]: With dead ends: 520 [2023-12-15 20:48:51,946 INFO L226 Difference]: Without dead ends: 314 [2023-12-15 20:48:51,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:48:51,949 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 72 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:48:51,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 448 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:48:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-15 20:48:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311. [2023-12-15 20:48:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 223 states have (on average 1.4260089686098654) internal successors, (318), 223 states have internal predecessors, (318), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 20:48:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 486 transitions. [2023-12-15 20:48:51,990 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 486 transitions. Word has length 187 [2023-12-15 20:48:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:48:51,991 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 486 transitions. [2023-12-15 20:48:51,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 486 transitions. [2023-12-15 20:48:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-15 20:48:51,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:48:51,992 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:48:52,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:48:52,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:52,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:48:52,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:48:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1056845761, now seen corresponding path program 1 times [2023-12-15 20:48:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:48:52,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154491414] [2023-12-15 20:48:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:48:52,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:48:52,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509698974] [2023-12-15 20:48:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:52,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:52,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:52,251 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:48:52,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:48:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:52,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:48:52,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:48:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:48:52,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:48:52,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:48:52,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154491414] [2023-12-15 20:48:52,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:48:52,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509698974] [2023-12-15 20:48:52,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509698974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:48:52,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:48:52,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:48:52,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148944741] [2023-12-15 20:48:52,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:48:52,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:48:52,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:48:52,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:48:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:48:52,750 INFO L87 Difference]: Start difference. First operand 311 states and 486 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:48:52,919 INFO L93 Difference]: Finished difference Result 802 states and 1251 transitions. [2023-12-15 20:48:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:48:52,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 188 [2023-12-15 20:48:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:48:52,923 INFO L225 Difference]: With dead ends: 802 [2023-12-15 20:48:52,923 INFO L226 Difference]: Without dead ends: 492 [2023-12-15 20:48:52,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:48:52,927 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 182 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:48:52,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 552 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:48:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-15 20:48:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 365. [2023-12-15 20:48:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 248 states have (on average 1.3911290322580645) internal successors, (345), 248 states have internal predecessors, (345), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-15 20:48:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 569 transitions. [2023-12-15 20:48:52,971 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 569 transitions. Word has length 188 [2023-12-15 20:48:52,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:48:52,972 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 569 transitions. [2023-12-15 20:48:52,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:52,972 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 569 transitions. [2023-12-15 20:48:52,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-15 20:48:52,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:48:52,974 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:48:52,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:48:53,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:53,180 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:48:53,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:48:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1314893501, now seen corresponding path program 1 times [2023-12-15 20:48:53,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:48:53,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817698056] [2023-12-15 20:48:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:53,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:48:53,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:48:53,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527532589] [2023-12-15 20:48:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:53,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:53,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:53,234 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:48:53,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:48:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:53,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 20:48:53,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:48:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:48:54,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:48:54,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:48:54,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817698056] [2023-12-15 20:48:54,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:48:54,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527532589] [2023-12-15 20:48:54,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527532589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:48:54,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:48:54,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:48:54,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372297417] [2023-12-15 20:48:54,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:48:54,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:48:54,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:48:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:48:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:48:54,197 INFO L87 Difference]: Start difference. First operand 365 states and 569 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:48:54,685 INFO L93 Difference]: Finished difference Result 1057 states and 1635 transitions. [2023-12-15 20:48:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:48:54,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 188 [2023-12-15 20:48:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:48:54,688 INFO L225 Difference]: With dead ends: 1057 [2023-12-15 20:48:54,688 INFO L226 Difference]: Without dead ends: 747 [2023-12-15 20:48:54,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:48:54,690 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 384 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:48:54,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 511 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:48:54,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-12-15 20:48:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 475. [2023-12-15 20:48:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 358 states have (on average 1.441340782122905) internal successors, (516), 358 states have internal predecessors, (516), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-15 20:48:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 740 transitions. [2023-12-15 20:48:54,732 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 740 transitions. Word has length 188 [2023-12-15 20:48:54,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:48:54,732 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 740 transitions. [2023-12-15 20:48:54,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:54,732 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 740 transitions. [2023-12-15 20:48:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-15 20:48:54,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:48:54,734 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:48:54,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:48:54,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:54,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:48:54,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:48:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash 497245051, now seen corresponding path program 1 times [2023-12-15 20:48:54,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:48:54,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115374025] [2023-12-15 20:48:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:54,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:48:54,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:48:54,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22443256] [2023-12-15 20:48:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:54,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:54,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:54,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:48:55,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:48:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:55,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 20:48:55,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:48:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:48:55,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:48:55,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:48:55,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115374025] [2023-12-15 20:48:55,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:48:55,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22443256] [2023-12-15 20:48:55,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22443256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:48:55,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:48:55,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:48:55,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432799440] [2023-12-15 20:48:55,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:48:55,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:48:55,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:48:55,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:48:55,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:48:55,139 INFO L87 Difference]: Start difference. First operand 475 states and 740 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:55,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:48:55,370 INFO L93 Difference]: Finished difference Result 1239 states and 1935 transitions. [2023-12-15 20:48:55,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:48:55,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 188 [2023-12-15 20:48:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:48:55,374 INFO L225 Difference]: With dead ends: 1239 [2023-12-15 20:48:55,374 INFO L226 Difference]: Without dead ends: 849 [2023-12-15 20:48:55,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:48:55,376 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 170 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:48:55,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 406 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:48:55,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-12-15 20:48:55,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 847. [2023-12-15 20:48:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 643 states have (on average 1.421461897356143) internal successors, (914), 643 states have internal predecessors, (914), 196 states have call successors, (196), 7 states have call predecessors, (196), 7 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-15 20:48:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1306 transitions. [2023-12-15 20:48:55,444 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1306 transitions. Word has length 188 [2023-12-15 20:48:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:48:55,444 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1306 transitions. [2023-12-15 20:48:55,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1306 transitions. [2023-12-15 20:48:55,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-15 20:48:55,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:48:55,446 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:48:55,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:48:55,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:55,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:48:55,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:48:55,655 INFO L85 PathProgramCache]: Analyzing trace with hash -293376757, now seen corresponding path program 1 times [2023-12-15 20:48:55,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:48:55,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789838682] [2023-12-15 20:48:55,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:55,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:48:55,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:48:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288213] [2023-12-15 20:48:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:55,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:55,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:55,675 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:48:55,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:48:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:55,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 20:48:55,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:48:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:48:56,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:48:56,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:48:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789838682] [2023-12-15 20:48:56,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:48:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288213] [2023-12-15 20:48:56,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:48:56,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:48:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:48:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975332381] [2023-12-15 20:48:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:48:56,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:48:56,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:48:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:48:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:48:56,007 INFO L87 Difference]: Start difference. First operand 847 states and 1306 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:56,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:48:56,449 INFO L93 Difference]: Finished difference Result 2793 states and 4344 transitions. [2023-12-15 20:48:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:48:56,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 190 [2023-12-15 20:48:56,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:48:56,456 INFO L225 Difference]: With dead ends: 2793 [2023-12-15 20:48:56,457 INFO L226 Difference]: Without dead ends: 2134 [2023-12-15 20:48:56,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:48:56,459 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 695 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:48:56,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1034 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:48:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2023-12-15 20:48:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1205. [2023-12-15 20:48:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 885 states have (on average 1.415819209039548) internal successors, (1253), 885 states have internal predecessors, (1253), 308 states have call successors, (308), 11 states have call predecessors, (308), 11 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-15 20:48:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1869 transitions. [2023-12-15 20:48:56,575 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1869 transitions. Word has length 190 [2023-12-15 20:48:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:48:56,575 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1869 transitions. [2023-12-15 20:48:56,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1869 transitions. [2023-12-15 20:48:56,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-15 20:48:56,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:48:56,577 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:48:56,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:48:56,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:56,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:48:56,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:48:56,784 INFO L85 PathProgramCache]: Analyzing trace with hash 289010148, now seen corresponding path program 1 times [2023-12-15 20:48:56,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:48:56,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969021166] [2023-12-15 20:48:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:56,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:48:56,813 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:48:56,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056610333] [2023-12-15 20:48:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:56,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:56,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:56,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:48:56,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:48:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:56,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:48:56,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:48:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:48:56,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:48:56,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:48:56,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969021166] [2023-12-15 20:48:56,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:48:56,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056610333] [2023-12-15 20:48:56,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056610333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:48:56,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:48:56,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:48:56,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176445976] [2023-12-15 20:48:56,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:48:56,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:48:56,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:48:56,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:48:56,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:48:56,948 INFO L87 Difference]: Start difference. First operand 1205 states and 1869 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:57,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:48:57,030 INFO L93 Difference]: Finished difference Result 2071 states and 3221 transitions. [2023-12-15 20:48:57,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:48:57,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 190 [2023-12-15 20:48:57,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:48:57,034 INFO L225 Difference]: With dead ends: 2071 [2023-12-15 20:48:57,034 INFO L226 Difference]: Without dead ends: 1205 [2023-12-15 20:48:57,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:48:57,037 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 22 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:48:57,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 287 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:48:57,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-12-15 20:48:57,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1205. [2023-12-15 20:48:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 885 states have (on average 1.4090395480225988) internal successors, (1247), 885 states have internal predecessors, (1247), 308 states have call successors, (308), 11 states have call predecessors, (308), 11 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-15 20:48:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1863 transitions. [2023-12-15 20:48:57,151 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1863 transitions. Word has length 190 [2023-12-15 20:48:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:48:57,151 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1863 transitions. [2023-12-15 20:48:57,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1863 transitions. [2023-12-15 20:48:57,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 20:48:57,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:48:57,153 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:48:57,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:48:57,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 20:48:57,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:48:57,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:48:57,359 INFO L85 PathProgramCache]: Analyzing trace with hash 60717705, now seen corresponding path program 1 times [2023-12-15 20:48:57,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:48:57,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841560186] [2023-12-15 20:48:57,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:57,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:48:57,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:48:57,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040768965] [2023-12-15 20:48:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:57,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:57,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:57,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:48:57,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:48:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:57,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:48:57,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:48:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 283 proven. 3 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2023-12-15 20:48:57,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:48:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 6 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2023-12-15 20:48:58,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:48:58,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841560186] [2023-12-15 20:48:58,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:48:58,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040768965] [2023-12-15 20:48:58,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040768965] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:48:58,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:48:58,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-15 20:48:58,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604315846] [2023-12-15 20:48:58,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:48:58,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 20:48:58,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:48:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 20:48:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-12-15 20:48:58,058 INFO L87 Difference]: Start difference. First operand 1205 states and 1863 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 4 states have call successors, (56), 3 states have call predecessors, (56), 7 states have return successors, (56), 6 states have call predecessors, (56), 4 states have call successors, (56) [2023-12-15 20:48:58,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:48:58,560 INFO L93 Difference]: Finished difference Result 1541 states and 2330 transitions. [2023-12-15 20:48:58,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 20:48:58,561 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 4 states have call successors, (56), 3 states have call predecessors, (56), 7 states have return successors, (56), 6 states have call predecessors, (56), 4 states have call successors, (56) Word has length 191 [2023-12-15 20:48:58,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:48:58,563 INFO L225 Difference]: With dead ends: 1541 [2023-12-15 20:48:58,563 INFO L226 Difference]: Without dead ends: 614 [2023-12-15 20:48:58,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 365 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=293, Invalid=637, Unknown=0, NotChecked=0, Total=930 [2023-12-15 20:48:58,565 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 615 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:48:58,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 278 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:48:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-12-15 20:48:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 365. [2023-12-15 20:48:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 271 states have (on average 1.3357933579335792) internal successors, (362), 271 states have internal predecessors, (362), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 20:48:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 530 transitions. [2023-12-15 20:48:58,634 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 530 transitions. Word has length 191 [2023-12-15 20:48:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:48:58,634 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 530 transitions. [2023-12-15 20:48:58,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 4 states have call successors, (56), 3 states have call predecessors, (56), 7 states have return successors, (56), 6 states have call predecessors, (56), 4 states have call successors, (56) [2023-12-15 20:48:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 530 transitions. [2023-12-15 20:48:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 20:48:58,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:48:58,635 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:48:58,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 20:48:58,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:58,841 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:48:58,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:48:58,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1764945838, now seen corresponding path program 1 times [2023-12-15 20:48:58,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:48:58,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720653827] [2023-12-15 20:48:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:58,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:48:58,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:48:58,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455934967] [2023-12-15 20:48:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:48:58,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:48:58,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:48:58,859 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:48:58,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 20:48:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:48:59,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 20:48:59,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:48:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:48:59,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:48:59,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:48:59,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720653827] [2023-12-15 20:48:59,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:48:59,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455934967] [2023-12-15 20:48:59,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455934967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:48:59,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:48:59,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:48:59,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129455868] [2023-12-15 20:48:59,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:48:59,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:48:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:48:59,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:48:59,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:48:59,486 INFO L87 Difference]: Start difference. First operand 365 states and 530 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:48:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:48:59,928 INFO L93 Difference]: Finished difference Result 689 states and 1003 transitions. [2023-12-15 20:48:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 20:48:59,929 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2023-12-15 20:48:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:48:59,931 INFO L225 Difference]: With dead ends: 689 [2023-12-15 20:48:59,931 INFO L226 Difference]: Without dead ends: 463 [2023-12-15 20:48:59,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2023-12-15 20:48:59,932 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 312 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:48:59,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 445 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:48:59,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-12-15 20:49:00,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 393. [2023-12-15 20:49:00,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 299 states have (on average 1.3478260869565217) internal successors, (403), 299 states have internal predecessors, (403), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 20:49:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 571 transitions. [2023-12-15 20:49:00,006 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 571 transitions. Word has length 191 [2023-12-15 20:49:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:49:00,006 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 571 transitions. [2023-12-15 20:49:00,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 571 transitions. [2023-12-15 20:49:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 20:49:00,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:49:00,007 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:49:00,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 20:49:00,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 20:49:00,214 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:49:00,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:49:00,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2111298040, now seen corresponding path program 1 times [2023-12-15 20:49:00,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:49:00,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685106990] [2023-12-15 20:49:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:00,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:49:00,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:49:00,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214289952] [2023-12-15 20:49:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:00,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:49:00,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:49:00,244 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:49:00,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 20:49:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:49:00,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:49:00,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:49:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:49:01,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:49:01,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:49:01,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685106990] [2023-12-15 20:49:01,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:49:01,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214289952] [2023-12-15 20:49:01,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214289952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:49:01,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:49:01,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:49:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338092562] [2023-12-15 20:49:01,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:49:01,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:49:01,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:49:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:49:01,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:49:01,647 INFO L87 Difference]: Start difference. First operand 393 states and 571 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:49:02,138 INFO L93 Difference]: Finished difference Result 656 states and 953 transitions. [2023-12-15 20:49:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 20:49:02,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2023-12-15 20:49:02,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:49:02,140 INFO L225 Difference]: With dead ends: 656 [2023-12-15 20:49:02,140 INFO L226 Difference]: Without dead ends: 399 [2023-12-15 20:49:02,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:49:02,141 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 327 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:49:02,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 561 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:49:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-15 20:49:02,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 393. [2023-12-15 20:49:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 299 states have (on average 1.3377926421404682) internal successors, (400), 299 states have internal predecessors, (400), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 20:49:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 568 transitions. [2023-12-15 20:49:02,188 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 568 transitions. Word has length 191 [2023-12-15 20:49:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:49:02,190 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 568 transitions. [2023-12-15 20:49:02,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:02,191 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 568 transitions. [2023-12-15 20:49:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 20:49:02,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:49:02,195 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:49:02,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:49:02,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 20:49:02,401 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:49:02,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:49:02,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1090229686, now seen corresponding path program 1 times [2023-12-15 20:49:02,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:49:02,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899822011] [2023-12-15 20:49:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:02,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:49:02,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:49:02,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060089300] [2023-12-15 20:49:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:02,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:49:02,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:49:02,420 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:49:02,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 20:49:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:49:02,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:49:02,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:49:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:49:02,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:49:02,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:49:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899822011] [2023-12-15 20:49:02,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:49:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060089300] [2023-12-15 20:49:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060089300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:49:02,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:49:02,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:49:02,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122254431] [2023-12-15 20:49:02,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:49:02,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:49:02,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:49:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:49:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:49:02,701 INFO L87 Difference]: Start difference. First operand 393 states and 568 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:49:03,039 INFO L93 Difference]: Finished difference Result 656 states and 948 transitions. [2023-12-15 20:49:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 20:49:03,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2023-12-15 20:49:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:49:03,041 INFO L225 Difference]: With dead ends: 656 [2023-12-15 20:49:03,041 INFO L226 Difference]: Without dead ends: 399 [2023-12-15 20:49:03,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:49:03,042 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 283 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:49:03,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 615 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:49:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-15 20:49:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 393. [2023-12-15 20:49:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 299 states have (on average 1.3311036789297659) internal successors, (398), 299 states have internal predecessors, (398), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 20:49:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 566 transitions. [2023-12-15 20:49:03,080 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 566 transitions. Word has length 191 [2023-12-15 20:49:03,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:49:03,080 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 566 transitions. [2023-12-15 20:49:03,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 566 transitions. [2023-12-15 20:49:03,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 20:49:03,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:49:03,081 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:49:03,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 20:49:03,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 20:49:03,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:49:03,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:49:03,288 INFO L85 PathProgramCache]: Analyzing trace with hash 923595521, now seen corresponding path program 1 times [2023-12-15 20:49:03,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:49:03,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838789442] [2023-12-15 20:49:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:03,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:49:03,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:49:03,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812186525] [2023-12-15 20:49:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:03,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:49:03,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:49:03,318 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:49:03,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 20:49:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:49:03,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 20:49:03,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:49:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:49:03,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:49:03,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:49:03,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838789442] [2023-12-15 20:49:03,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:49:03,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812186525] [2023-12-15 20:49:03,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812186525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:49:03,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:49:03,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 20:49:03,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430068428] [2023-12-15 20:49:03,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:49:03,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 20:49:03,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:49:03,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 20:49:03,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:49:03,603 INFO L87 Difference]: Start difference. First operand 393 states and 566 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:49:04,283 INFO L93 Difference]: Finished difference Result 862 states and 1243 transitions. [2023-12-15 20:49:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 20:49:04,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2023-12-15 20:49:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:49:04,285 INFO L225 Difference]: With dead ends: 862 [2023-12-15 20:49:04,285 INFO L226 Difference]: Without dead ends: 614 [2023-12-15 20:49:04,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-15 20:49:04,287 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 223 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:49:04,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 790 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:49:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-12-15 20:49:04,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 522. [2023-12-15 20:49:04,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 408 states have (on average 1.338235294117647) internal successors, (546), 410 states have internal predecessors, (546), 102 states have call successors, (102), 11 states have call predecessors, (102), 11 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-15 20:49:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 750 transitions. [2023-12-15 20:49:04,359 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 750 transitions. Word has length 191 [2023-12-15 20:49:04,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:49:04,360 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 750 transitions. [2023-12-15 20:49:04,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 750 transitions. [2023-12-15 20:49:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 20:49:04,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:49:04,361 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:49:04,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 20:49:04,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 20:49:04,568 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:49:04,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:49:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1064144131, now seen corresponding path program 1 times [2023-12-15 20:49:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:49:04,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317537324] [2023-12-15 20:49:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:49:04,583 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:49:04,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809729751] [2023-12-15 20:49:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:04,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:49:04,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:49:04,585 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) [2023-12-15 20:49:04,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 20:49:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:49:04,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 20:49:04,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:49:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:49:04,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:49:04,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:49:04,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317537324] [2023-12-15 20:49:04,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:49:04,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809729751] [2023-12-15 20:49:04,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809729751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:49:04,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:49:04,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 20:49:04,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736392929] [2023-12-15 20:49:04,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:49:04,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 20:49:04,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:49:04,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 20:49:04,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:49:04,889 INFO L87 Difference]: Start difference. First operand 522 states and 750 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:05,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:49:05,242 INFO L93 Difference]: Finished difference Result 1048 states and 1506 transitions. [2023-12-15 20:49:05,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 20:49:05,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2023-12-15 20:49:05,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:49:05,246 INFO L225 Difference]: With dead ends: 1048 [2023-12-15 20:49:05,246 INFO L226 Difference]: Without dead ends: 674 [2023-12-15 20:49:05,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-15 20:49:05,247 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 144 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:49:05,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 767 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:49:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-12-15 20:49:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 500. [2023-12-15 20:49:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 386 states have (on average 1.3264248704663213) internal successors, (512), 388 states have internal predecessors, (512), 102 states have call successors, (102), 11 states have call predecessors, (102), 11 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-15 20:49:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 716 transitions. [2023-12-15 20:49:05,298 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 716 transitions. Word has length 191 [2023-12-15 20:49:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:49:05,298 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 716 transitions. [2023-12-15 20:49:05,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 716 transitions. [2023-12-15 20:49:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-15 20:49:05,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:49:05,300 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:49:05,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 20:49:05,505 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 [2023-12-15 20:49:05,506 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:49:05,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:49:05,506 INFO L85 PathProgramCache]: Analyzing trace with hash 51390940, now seen corresponding path program 1 times [2023-12-15 20:49:05,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:49:05,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846064504] [2023-12-15 20:49:05,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:05,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:49:05,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:49:05,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752032533] [2023-12-15 20:49:05,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:05,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:49:05,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:49:05,552 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) [2023-12-15 20:49:05,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 20:49:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:49:05,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 20:49:05,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:49:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:49:06,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:49:06,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:49:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846064504] [2023-12-15 20:49:06,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:49:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752032533] [2023-12-15 20:49:06,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752032533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:49:06,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:49:06,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 20:49:06,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302811381] [2023-12-15 20:49:06,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:49:06,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:49:06,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:49:06,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:49:06,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:49:06,743 INFO L87 Difference]: Start difference. First operand 500 states and 716 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:49:07,643 INFO L93 Difference]: Finished difference Result 1187 states and 1674 transitions. [2023-12-15 20:49:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 20:49:07,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 193 [2023-12-15 20:49:07,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:49:07,647 INFO L225 Difference]: With dead ends: 1187 [2023-12-15 20:49:07,648 INFO L226 Difference]: Without dead ends: 793 [2023-12-15 20:49:07,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-15 20:49:07,650 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 325 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:49:07,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 514 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 20:49:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-12-15 20:49:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 539. [2023-12-15 20:49:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 425 states have (on average 1.3152941176470587) internal successors, (559), 427 states have internal predecessors, (559), 102 states have call successors, (102), 11 states have call predecessors, (102), 11 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-15 20:49:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 763 transitions. [2023-12-15 20:49:07,704 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 763 transitions. Word has length 193 [2023-12-15 20:49:07,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:49:07,704 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 763 transitions. [2023-12-15 20:49:07,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:49:07,704 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 763 transitions. [2023-12-15 20:49:07,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-15 20:49:07,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:49:07,705 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:49:07,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 20:49:07,911 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 [2023-12-15 20:49:07,911 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:49:07,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:49:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash -969677414, now seen corresponding path program 1 times [2023-12-15 20:49:07,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:49:07,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880900089] [2023-12-15 20:49:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:07,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:49:07,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:49:07,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213042849] [2023-12-15 20:49:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:49:07,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:49:07,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:49:07,958 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) [2023-12-15 20:49:07,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 20:49:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:49:08,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-15 20:49:08,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:49:17,918 WARN L293 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-15 20:49:25,959 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-15 20:49:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 947 proven. 180 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-12-15 20:49:27,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:49:53,137 WARN L293 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 37 DAG size of output: 32 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) Received shutdown request... [2023-12-15 20:49:55,554 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:49:55,554 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:49:56,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:49:56,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 20:49:56,485 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 [2023-12-15 20:49:56,485 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 194 with TraceHistMax 28,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-4-3-1 context. [2023-12-15 20:49:56,489 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:49:56,490 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:49:56,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:49:56 BoogieIcfgContainer [2023-12-15 20:49:56,492 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:49:56,492 INFO L158 Benchmark]: Toolchain (without parser) took 70563.12ms. Allocated memory was 239.1MB in the beginning and 720.4MB in the end (delta: 481.3MB). Free memory was 187.5MB in the beginning and 578.4MB in the end (delta: -391.0MB). Peak memory consumption was 91.4MB. Max. memory is 8.0GB. [2023-12-15 20:49:56,492 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:49:56,493 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.88ms. Allocated memory is still 239.1MB. Free memory was 187.5MB in the beginning and 170.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 20:49:56,493 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.77ms. Allocated memory is still 239.1MB. Free memory was 170.6MB in the beginning and 165.4MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:49:56,493 INFO L158 Benchmark]: Boogie Preprocessor took 164.04ms. Allocated memory is still 239.1MB. Free memory was 165.4MB in the beginning and 159.7MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:49:56,493 INFO L158 Benchmark]: RCFGBuilder took 577.04ms. Allocated memory is still 239.1MB. Free memory was 159.7MB in the beginning and 190.4MB in the end (delta: -30.7MB). Peak memory consumption was 28.5MB. Max. memory is 8.0GB. [2023-12-15 20:49:56,493 INFO L158 Benchmark]: TraceAbstraction took 69452.72ms. Allocated memory was 239.1MB in the beginning and 720.4MB in the end (delta: 481.3MB). Free memory was 189.9MB in the beginning and 578.4MB in the end (delta: -388.5MB). Peak memory consumption was 93.3MB. Max. memory is 8.0GB. [2023-12-15 20:49:56,494 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 290.88ms. Allocated memory is still 239.1MB. Free memory was 187.5MB in the beginning and 170.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 73.77ms. Allocated memory is still 239.1MB. Free memory was 170.6MB in the beginning and 165.4MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 164.04ms. Allocated memory is still 239.1MB. Free memory was 165.4MB in the beginning and 159.7MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 577.04ms. Allocated memory is still 239.1MB. Free memory was 159.7MB in the beginning and 190.4MB in the end (delta: -30.7MB). Peak memory consumption was 28.5MB. Max. memory is 8.0GB. * TraceAbstraction took 69452.72ms. Allocated memory was 239.1MB in the beginning and 720.4MB in the end (delta: 481.3MB). Free memory was 189.9MB in the beginning and 578.4MB in the end (delta: -388.5MB). Peak memory consumption was 93.3MB. 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 194 with TraceHistMax 28,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-4-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.4s, OverallIterations: 16, TraceHistogramMax: 28, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4208 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4208 mSDsluCounter, 8101 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5579 mSDsCounter, 822 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3742 IncrementalHoareTripleChecker+Invalid, 4564 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 822 mSolverCounterUnsat, 2522 mSDtfsCounter, 3742 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3079 GetRequests, 2946 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1205occurred in iteration=7, InterpolantAutomatonStates: 128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 15 MinimizatonAttempts, 2340 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 3031 NumberOfCodeBlocks, 3031 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3019 ConstructedInterpolants, 0 QuantifiedInterpolants, 14701 SizeOfPredicates, 82 NumberOfNonLiveVariables, 6937 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 24183/24192 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