/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_fillercode_fillercodestructure_filler-pr-co_file-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:24:31,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:24:31,815 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 20:24:31,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:24:31,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:24:31,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:24:31,833 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:24:31,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:24:31,834 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:24:31,834 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:24:31,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:24:31,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:24:31,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:24:31,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:24:31,835 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:24:31,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:24:31,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:24:31,836 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:24:31,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:24:31,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:24:31,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:24:31,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:24:31,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:24:31,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:24:31,838 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:24:31,838 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:24:31,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:24:31,838 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:24:31,839 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:24:31,839 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:24:31,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:24:31,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:24:31,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:24:31,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:24:31,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:24:31,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:24:31,840 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:24:31,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:24:31,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:24:31,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:24:31,841 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:24:31,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:24:31,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:24:31,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:24:31,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:24:32,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:24:32,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:24:32,014 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:24:32,014 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:24:32,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i [2023-12-15 20:24:33,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:24:33,159 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:24:33,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i [2023-12-15 20:24:33,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47be606a9/947c1707cc084ac29d7ac02fbc4b5295/FLAG3589d30cd [2023-12-15 20:24:33,176 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47be606a9/947c1707cc084ac29d7ac02fbc4b5295 [2023-12-15 20:24:33,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:24:33,179 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:24:33,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:24:33,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:24:33,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:24:33,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ad1279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33, skipping insertion in model container [2023-12-15 20:24:33,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,214 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:24:33,318 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_fillercode_fillercodestructure_filler-pr-co_file-3.i[918,931] [2023-12-15 20:24:33,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:24:33,375 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:24:33,383 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_fillercode_fillercodestructure_filler-pr-co_file-3.i[918,931] [2023-12-15 20:24:33,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:24:33,431 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:24:33,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33 WrapperNode [2023-12-15 20:24:33,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:24:33,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:24:33,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:24:33,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:24:33,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,469 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 279 [2023-12-15 20:24:33,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:24:33,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:24:33,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:24:33,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:24:33,477 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,515 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 20:24:33,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,540 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:24:33,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:24:33,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:24:33,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:24:33,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (1/1) ... [2023-12-15 20:24:33,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:24:33,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:33,571 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 20:24:33,602 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 20:24:33,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:24:33,609 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:24:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:24:33,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:24:33,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:24:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:24:33,692 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:24:33,693 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:24:34,049 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:24:34,071 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:24:34,071 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:24:34,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:24:34 BoogieIcfgContainer [2023-12-15 20:24:34,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:24:34,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:24:34,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:24:34,075 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:24:34,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:24:33" (1/3) ... [2023-12-15 20:24:34,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e3baf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:24:34, skipping insertion in model container [2023-12-15 20:24:34,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:24:33" (2/3) ... [2023-12-15 20:24:34,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e3baf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:24:34, skipping insertion in model container [2023-12-15 20:24:34,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:24:34" (3/3) ... [2023-12-15 20:24:34,077 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i [2023-12-15 20:24:34,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:24:34,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:24:34,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:24:34,138 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;@2fa2f6d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:24:34,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:24:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 73 states have (on average 1.6027397260273972) internal successors, (117), 74 states have internal predecessors, (117), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 20:24:34,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-15 20:24:34,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:34,168 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:34,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:34,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:34,174 INFO L85 PathProgramCache]: Analyzing trace with hash -642148450, now seen corresponding path program 1 times [2023-12-15 20:24:34,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:34,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883761793] [2023-12-15 20:24:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:34,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:34,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:34,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883761793] [2023-12-15 20:24:34,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:24:34,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344117644] [2023-12-15 20:24:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:34,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:34,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:34,441 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 20:24:34,479 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 20:24:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:34,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:24:34,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-12-15 20:24:34,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:24:34,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344117644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:24:34,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:24:34,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:24:34,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734283257] [2023-12-15 20:24:34,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:24:34,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:24:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:34,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:24:34,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:24:34,705 INFO L87 Difference]: Start difference. First operand has 110 states, 73 states have (on average 1.6027397260273972) internal successors, (117), 74 states have internal predecessors, (117), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-15 20:24:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:34,749 INFO L93 Difference]: Finished difference Result 217 states and 402 transitions. [2023-12-15 20:24:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:24:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 216 [2023-12-15 20:24:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:34,757 INFO L225 Difference]: With dead ends: 217 [2023-12-15 20:24:34,758 INFO L226 Difference]: Without dead ends: 108 [2023-12-15 20:24:34,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 215 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 20:24:34,766 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:34,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:24:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-15 20:24:34,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-12-15 20:24:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 72 states have (on average 1.5138888888888888) internal successors, (109), 72 states have internal predecessors, (109), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 20:24:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 177 transitions. [2023-12-15 20:24:34,802 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 177 transitions. Word has length 216 [2023-12-15 20:24:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:34,803 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 177 transitions. [2023-12-15 20:24:34,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-15 20:24:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 177 transitions. [2023-12-15 20:24:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-15 20:24:34,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:34,808 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:34,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:24:35,014 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 20:24:35,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:35,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash -551400394, now seen corresponding path program 1 times [2023-12-15 20:24:35,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:35,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355731906] [2023-12-15 20:24:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:35,110 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:35,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607754412] [2023-12-15 20:24:35,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:35,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:35,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:35,112 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 20:24:35,138 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 20:24:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:24:35,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:24:35,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:24:35,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:35,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355731906] [2023-12-15 20:24:35,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:35,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607754412] [2023-12-15 20:24:35,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607754412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:24:35,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:24:35,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:24:35,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142714747] [2023-12-15 20:24:35,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:24:35,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:24:35,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:35,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:24:35,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:24:35,275 INFO L87 Difference]: Start difference. First operand 108 states and 177 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:35,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:35,364 INFO L93 Difference]: Finished difference Result 320 states and 525 transitions. [2023-12-15 20:24:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:24:35,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 217 [2023-12-15 20:24:35,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:35,369 INFO L225 Difference]: With dead ends: 320 [2023-12-15 20:24:35,369 INFO L226 Difference]: Without dead ends: 213 [2023-12-15 20:24:35,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 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 20:24:35,370 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 171 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:35,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 323 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:24:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-15 20:24:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 210. [2023-12-15 20:24:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 139 states have (on average 1.5107913669064748) internal successors, (210), 139 states have internal predecessors, (210), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-15 20:24:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 346 transitions. [2023-12-15 20:24:35,408 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 346 transitions. Word has length 217 [2023-12-15 20:24:35,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:35,416 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 346 transitions. [2023-12-15 20:24:35,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:35,416 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 346 transitions. [2023-12-15 20:24:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-15 20:24:35,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:35,424 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:35,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:24:35,630 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 20:24:35,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:35,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1759014978, now seen corresponding path program 1 times [2023-12-15 20:24:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:35,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529221512] [2023-12-15 20:24:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:35,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:35,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:35,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106947540] [2023-12-15 20:24:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:35,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:35,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:35,703 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 20:24:35,705 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 20:24:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:24:35,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:24:35,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:24:35,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:35,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529221512] [2023-12-15 20:24:35,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:35,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106947540] [2023-12-15 20:24:35,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106947540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:24:35,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:24:35,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:24:35,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133052886] [2023-12-15 20:24:35,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:24:35,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:24:35,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:35,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:24:35,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:24:35,901 INFO L87 Difference]: Start difference. First operand 210 states and 346 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:36,009 INFO L93 Difference]: Finished difference Result 623 states and 1026 transitions. [2023-12-15 20:24:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:24:36,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 218 [2023-12-15 20:24:36,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:36,017 INFO L225 Difference]: With dead ends: 623 [2023-12-15 20:24:36,017 INFO L226 Difference]: Without dead ends: 414 [2023-12-15 20:24:36,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 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 20:24:36,019 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 155 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:36,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 419 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:24:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-12-15 20:24:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 412. [2023-12-15 20:24:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 271 states have (on average 1.4723247232472325) internal successors, (399), 271 states have internal predecessors, (399), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-15 20:24:36,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 671 transitions. [2023-12-15 20:24:36,049 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 671 transitions. Word has length 218 [2023-12-15 20:24:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:36,049 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 671 transitions. [2023-12-15 20:24:36,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 671 transitions. [2023-12-15 20:24:36,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-15 20:24:36,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:36,051 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:36,063 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 20:24:36,257 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 20:24:36,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:36,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:36,259 INFO L85 PathProgramCache]: Analyzing trace with hash -155957186, now seen corresponding path program 1 times [2023-12-15 20:24:36,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:36,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862493862] [2023-12-15 20:24:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:36,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:36,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:36,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290102805] [2023-12-15 20:24:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:36,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:36,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:36,329 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 20:24:36,356 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 20:24:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:36,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:24:36,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:24:36,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:24:36,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:36,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862493862] [2023-12-15 20:24:36,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:36,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290102805] [2023-12-15 20:24:36,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290102805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:24:36,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:24:36,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:24:36,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232334611] [2023-12-15 20:24:36,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:24:36,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:24:36,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:24:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:24:36,685 INFO L87 Difference]: Start difference. First operand 412 states and 671 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:36,791 INFO L93 Difference]: Finished difference Result 1234 states and 2011 transitions. [2023-12-15 20:24:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:24:36,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2023-12-15 20:24:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:36,797 INFO L225 Difference]: With dead ends: 1234 [2023-12-15 20:24:36,797 INFO L226 Difference]: Without dead ends: 823 [2023-12-15 20:24:36,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 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 20:24:36,800 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 64 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:36,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 332 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:24:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-12-15 20:24:36,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 821. [2023-12-15 20:24:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 540 states have (on average 1.451851851851852) internal successors, (784), 540 states have internal predecessors, (784), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-15 20:24:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1328 transitions. [2023-12-15 20:24:36,872 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1328 transitions. Word has length 219 [2023-12-15 20:24:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:36,873 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1328 transitions. [2023-12-15 20:24:36,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1328 transitions. [2023-12-15 20:24:36,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-15 20:24:36,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:36,875 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:36,894 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 20:24:37,081 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 20:24:37,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:37,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash 139911228, now seen corresponding path program 1 times [2023-12-15 20:24:37,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:37,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923009818] [2023-12-15 20:24:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:37,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:37,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:37,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135099172] [2023-12-15 20:24:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:37,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:37,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:37,129 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 20:24:37,132 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 20:24:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:37,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:24:37,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:24:37,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:24:37,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:37,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923009818] [2023-12-15 20:24:37,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:37,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135099172] [2023-12-15 20:24:37,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135099172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:24:37,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:24:37,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:24:37,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419558980] [2023-12-15 20:24:37,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:24:37,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:24:37,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:24:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:24:37,389 INFO L87 Difference]: Start difference. First operand 821 states and 1328 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, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:37,440 INFO L93 Difference]: Finished difference Result 1981 states and 3206 transitions. [2023-12-15 20:24:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:24:37,441 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, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2023-12-15 20:24:37,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:37,445 INFO L225 Difference]: With dead ends: 1981 [2023-12-15 20:24:37,445 INFO L226 Difference]: Without dead ends: 1161 [2023-12-15 20:24:37,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 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 20:24:37,447 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 67 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:37,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 395 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:24:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-15 20:24:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 995. [2023-12-15 20:24:37,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 714 states have (on average 1.504201680672269) internal successors, (1074), 714 states have internal predecessors, (1074), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-15 20:24:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1618 transitions. [2023-12-15 20:24:37,496 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1618 transitions. Word has length 220 [2023-12-15 20:24:37,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:37,496 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1618 transitions. [2023-12-15 20:24:37,496 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, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:37,496 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1618 transitions. [2023-12-15 20:24:37,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-15 20:24:37,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:37,498 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:37,503 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 20:24:37,704 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 20:24:37,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:37,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1025783355, now seen corresponding path program 1 times [2023-12-15 20:24:37,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:37,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389667231] [2023-12-15 20:24:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:37,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:37,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:37,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819903335] [2023-12-15 20:24:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:37,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:37,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:37,725 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 20:24:37,749 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 20:24:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:37,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:24:37,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1083 proven. 36 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2023-12-15 20:24:38,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:24:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-15 20:24:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:38,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389667231] [2023-12-15 20:24:38,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:38,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819903335] [2023-12-15 20:24:38,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819903335] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:24:38,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:24:38,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-15 20:24:38,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143156796] [2023-12-15 20:24:38,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:24:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:24:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:24:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:24:38,220 INFO L87 Difference]: Start difference. First operand 995 states and 1618 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-12-15 20:24:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:38,645 INFO L93 Difference]: Finished difference Result 2589 states and 4160 transitions. [2023-12-15 20:24:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 20:24:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 220 [2023-12-15 20:24:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:38,655 INFO L225 Difference]: With dead ends: 2589 [2023-12-15 20:24:38,656 INFO L226 Difference]: Without dead ends: 1545 [2023-12-15 20:24:38,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2023-12-15 20:24:38,660 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 368 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:38,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 616 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:24:38,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2023-12-15 20:24:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1519. [2023-12-15 20:24:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1086 states have (on average 1.4659300184162063) internal successors, (1592), 1086 states have internal predecessors, (1592), 408 states have call successors, (408), 24 states have call predecessors, (408), 24 states have return successors, (408), 408 states have call predecessors, (408), 408 states have call successors, (408) [2023-12-15 20:24:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2408 transitions. [2023-12-15 20:24:38,735 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2408 transitions. Word has length 220 [2023-12-15 20:24:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:38,736 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2408 transitions. [2023-12-15 20:24:38,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-12-15 20:24:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2408 transitions. [2023-12-15 20:24:38,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-15 20:24:38,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:38,738 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:38,758 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 20:24:38,960 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 20:24:38,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:38,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash -919048274, now seen corresponding path program 1 times [2023-12-15 20:24:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51192440] [2023-12-15 20:24:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:38,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:38,985 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:38,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373495506] [2023-12-15 20:24:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:38,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:38,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:38,987 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 20:24:38,989 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 20:24:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:39,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:24:39,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:24:39,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:24:39,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:39,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51192440] [2023-12-15 20:24:39,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:39,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373495506] [2023-12-15 20:24:39,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373495506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:24:39,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:24:39,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:24:39,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529808827] [2023-12-15 20:24:39,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:24:39,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:24:39,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:24:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:24:39,228 INFO L87 Difference]: Start difference. First operand 1519 states and 2408 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, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:39,399 INFO L93 Difference]: Finished difference Result 3020 states and 4735 transitions. [2023-12-15 20:24:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:24:39,399 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, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2023-12-15 20:24:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:39,406 INFO L225 Difference]: With dead ends: 3020 [2023-12-15 20:24:39,407 INFO L226 Difference]: Without dead ends: 2014 [2023-12-15 20:24:39,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:24:39,410 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 204 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:39,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 678 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:24:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2023-12-15 20:24:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1720. [2023-12-15 20:24:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1287 states have (on average 1.4801864801864801) internal successors, (1905), 1287 states have internal predecessors, (1905), 408 states have call successors, (408), 24 states have call predecessors, (408), 24 states have return successors, (408), 408 states have call predecessors, (408), 408 states have call successors, (408) [2023-12-15 20:24:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2721 transitions. [2023-12-15 20:24:39,488 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2721 transitions. Word has length 221 [2023-12-15 20:24:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:39,488 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2721 transitions. [2023-12-15 20:24:39,488 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, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:39,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2721 transitions. [2023-12-15 20:24:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-15 20:24:39,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:39,490 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:39,508 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 20:24:39,711 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 20:24:39,711 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:39,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:39,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2068357649, now seen corresponding path program 1 times [2023-12-15 20:24:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:39,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973025338] [2023-12-15 20:24:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:39,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796618994] [2023-12-15 20:24:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:39,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:39,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:39,731 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 20:24:39,754 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 20:24:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:39,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:24:39,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:24:39,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:24:39,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:39,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973025338] [2023-12-15 20:24:39,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:39,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796618994] [2023-12-15 20:24:39,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796618994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:24:39,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:24:39,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:24:39,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428067536] [2023-12-15 20:24:39,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:24:39,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:24:39,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:24:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:24:39,914 INFO L87 Difference]: Start difference. First operand 1720 states and 2721 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:40,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:40,093 INFO L93 Difference]: Finished difference Result 3441 states and 5442 transitions. [2023-12-15 20:24:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:24:40,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2023-12-15 20:24:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:40,099 INFO L225 Difference]: With dead ends: 3441 [2023-12-15 20:24:40,099 INFO L226 Difference]: Without dead ends: 1722 [2023-12-15 20:24:40,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 218 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 20:24:40,103 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 148 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:40,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 497 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:24:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-12-15 20:24:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-12-15 20:24:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1287 states have (on average 1.4724164724164723) internal successors, (1895), 1287 states have internal predecessors, (1895), 408 states have call successors, (408), 24 states have call predecessors, (408), 24 states have return successors, (408), 408 states have call predecessors, (408), 408 states have call successors, (408) [2023-12-15 20:24:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2711 transitions. [2023-12-15 20:24:40,166 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2711 transitions. Word has length 221 [2023-12-15 20:24:40,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:40,167 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2711 transitions. [2023-12-15 20:24:40,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2711 transitions. [2023-12-15 20:24:40,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-15 20:24:40,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:40,168 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:40,176 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 20:24:40,374 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 20:24:40,374 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:40,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:40,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1465086354, now seen corresponding path program 1 times [2023-12-15 20:24:40,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:40,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473891930] [2023-12-15 20:24:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:40,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:40,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:40,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244109186] [2023-12-15 20:24:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:40,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:40,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:40,392 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 20:24:40,413 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 20:24:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:40,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 20:24:40,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1135 proven. 42 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2023-12-15 20:24:41,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:24:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 57 proven. 42 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-15 20:24:41,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:41,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473891930] [2023-12-15 20:24:41,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:41,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244109186] [2023-12-15 20:24:41,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244109186] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:24:41,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:24:41,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-15 20:24:41,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148988918] [2023-12-15 20:24:41,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:24:41,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 20:24:41,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:41,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 20:24:41,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:24:41,500 INFO L87 Difference]: Start difference. First operand 1720 states and 2711 transitions. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-12-15 20:24:45,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:45,302 INFO L93 Difference]: Finished difference Result 8795 states and 13308 transitions. [2023-12-15 20:24:45,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-15 20:24:45,303 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) Word has length 222 [2023-12-15 20:24:45,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:45,329 INFO L225 Difference]: With dead ends: 8795 [2023-12-15 20:24:45,330 INFO L226 Difference]: Without dead ends: 7076 [2023-12-15 20:24:45,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2227 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1655, Invalid=4197, Unknown=0, NotChecked=0, Total=5852 [2023-12-15 20:24:45,338 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1975 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 1475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2014 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1475 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:45,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2014 Valid, 1190 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1475 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 20:24:45,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7076 states. [2023-12-15 20:24:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7076 to 4065. [2023-12-15 20:24:45,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 3076 states have (on average 1.431404421326398) internal successors, (4403), 3092 states have internal predecessors, (4403), 916 states have call successors, (916), 72 states have call predecessors, (916), 72 states have return successors, (916), 900 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-15 20:24:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 6235 transitions. [2023-12-15 20:24:45,628 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 6235 transitions. Word has length 222 [2023-12-15 20:24:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:45,629 INFO L495 AbstractCegarLoop]: Abstraction has 4065 states and 6235 transitions. [2023-12-15 20:24:45,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-12-15 20:24:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 6235 transitions. [2023-12-15 20:24:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-15 20:24:45,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:45,631 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:45,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 20:24:45,837 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 20:24:45,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:45,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1522344656, now seen corresponding path program 1 times [2023-12-15 20:24:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436791535] [2023-12-15 20:24:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:45,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:45,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501729969] [2023-12-15 20:24:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:45,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:45,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:45,874 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 20:24:45,877 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 20:24:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:46,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 20:24:46,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1083 proven. 36 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2023-12-15 20:24:46,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:24:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-15 20:24:46,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:46,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436791535] [2023-12-15 20:24:46,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:46,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501729969] [2023-12-15 20:24:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501729969] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:24:46,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:24:46,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-15 20:24:46,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177796996] [2023-12-15 20:24:46,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:24:46,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 20:24:46,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:46,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 20:24:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-15 20:24:46,609 INFO L87 Difference]: Start difference. First operand 4065 states and 6235 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-12-15 20:24:48,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:48,329 INFO L93 Difference]: Finished difference Result 10256 states and 15395 transitions. [2023-12-15 20:24:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-15 20:24:48,329 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) Word has length 222 [2023-12-15 20:24:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:48,355 INFO L225 Difference]: With dead ends: 10256 [2023-12-15 20:24:48,355 INFO L226 Difference]: Without dead ends: 6192 [2023-12-15 20:24:48,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=338, Invalid=654, Unknown=0, NotChecked=0, Total=992 [2023-12-15 20:24:48,364 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1255 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:48,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 809 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 20:24:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2023-12-15 20:24:48,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 5049. [2023-12-15 20:24:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5049 states, 3586 states have (on average 1.3770217512548801) internal successors, (4938), 3622 states have internal predecessors, (4938), 1332 states have call successors, (1332), 130 states have call predecessors, (1332), 130 states have return successors, (1332), 1296 states have call predecessors, (1332), 1332 states have call successors, (1332) [2023-12-15 20:24:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5049 states to 5049 states and 7602 transitions. [2023-12-15 20:24:48,779 INFO L78 Accepts]: Start accepts. Automaton has 5049 states and 7602 transitions. Word has length 222 [2023-12-15 20:24:48,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:48,779 INFO L495 AbstractCegarLoop]: Abstraction has 5049 states and 7602 transitions. [2023-12-15 20:24:48,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-12-15 20:24:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5049 states and 7602 transitions. [2023-12-15 20:24:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-15 20:24:48,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:48,781 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:48,805 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 20:24:48,987 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 20:24:48,987 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:48,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:48,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1140937200, now seen corresponding path program 1 times [2023-12-15 20:24:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:48,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102693005] [2023-12-15 20:24:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:48,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:49,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:49,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521916376] [2023-12-15 20:24:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:49,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:49,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:49,042 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 20:24:49,063 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 20:24:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:49,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 20:24:49,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1201 proven. 75 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-12-15 20:24:49,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:24:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 117 proven. 78 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2023-12-15 20:24:50,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:50,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102693005] [2023-12-15 20:24:50,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:50,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521916376] [2023-12-15 20:24:50,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521916376] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:24:50,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:24:50,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-15 20:24:50,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456308789] [2023-12-15 20:24:50,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:24:50,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-15 20:24:50,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:50,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-15 20:24:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-15 20:24:50,623 INFO L87 Difference]: Start difference. First operand 5049 states and 7602 transitions. Second operand has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 6 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) [2023-12-15 20:24:53,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:53,754 INFO L93 Difference]: Finished difference Result 11706 states and 17466 transitions. [2023-12-15 20:24:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-15 20:24:53,755 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 6 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) Word has length 222 [2023-12-15 20:24:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:53,777 INFO L225 Difference]: With dead ends: 11706 [2023-12-15 20:24:53,777 INFO L226 Difference]: Without dead ends: 6658 [2023-12-15 20:24:53,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1029, Invalid=2163, Unknown=0, NotChecked=0, Total=3192 [2023-12-15 20:24:53,787 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1879 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 1209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1918 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:53,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1918 Valid, 1079 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1209 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 20:24:53,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6658 states. [2023-12-15 20:24:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6658 to 4229. [2023-12-15 20:24:54,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4229 states, 3134 states have (on average 1.406190172303765) internal successors, (4407), 3154 states have internal predecessors, (4407), 996 states have call successors, (996), 98 states have call predecessors, (996), 98 states have return successors, (996), 976 states have call predecessors, (996), 996 states have call successors, (996) [2023-12-15 20:24:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4229 states to 4229 states and 6399 transitions. [2023-12-15 20:24:54,151 INFO L78 Accepts]: Start accepts. Automaton has 4229 states and 6399 transitions. Word has length 222 [2023-12-15 20:24:54,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:54,151 INFO L495 AbstractCegarLoop]: Abstraction has 4229 states and 6399 transitions. [2023-12-15 20:24:54,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 6 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) [2023-12-15 20:24:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4229 states and 6399 transitions. [2023-12-15 20:24:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-15 20:24:54,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:54,154 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:54,161 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 20:24:54,361 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 20:24:54,361 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:54,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1083678898, now seen corresponding path program 1 times [2023-12-15 20:24:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:54,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424273527] [2023-12-15 20:24:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:54,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:54,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:54,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434133496] [2023-12-15 20:24:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:54,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:54,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:54,382 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 20:24:54,384 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 20:24:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:54,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:24:54,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:24:54,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:24:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424273527] [2023-12-15 20:24:54,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434133496] [2023-12-15 20:24:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434133496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:24:54,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:24:54,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:24:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625918975] [2023-12-15 20:24:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:24:54,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:24:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:24:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:24:54,951 INFO L87 Difference]: Start difference. First operand 4229 states and 6399 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:55,203 INFO L93 Difference]: Finished difference Result 8373 states and 12671 transitions. [2023-12-15 20:24:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:24:55,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 222 [2023-12-15 20:24:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:55,214 INFO L225 Difference]: With dead ends: 8373 [2023-12-15 20:24:55,214 INFO L226 Difference]: Without dead ends: 4145 [2023-12-15 20:24:55,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 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 20:24:55,223 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 71 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:55,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 305 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:24:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2023-12-15 20:24:55,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 4143. [2023-12-15 20:24:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 3048 states have (on average 1.4028871391076116) internal successors, (4276), 3068 states have internal predecessors, (4276), 996 states have call successors, (996), 98 states have call predecessors, (996), 98 states have return successors, (996), 976 states have call predecessors, (996), 996 states have call successors, (996) [2023-12-15 20:24:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 6268 transitions. [2023-12-15 20:24:55,499 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 6268 transitions. Word has length 222 [2023-12-15 20:24:55,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:55,499 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 6268 transitions. [2023-12-15 20:24:55,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:24:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 6268 transitions. [2023-12-15 20:24:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-15 20:24:55,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:55,501 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:55,506 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 20:24:55,706 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 20:24:55,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:24:55,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:24:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1527125968, now seen corresponding path program 1 times [2023-12-15 20:24:55,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:24:55,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473270756] [2023-12-15 20:24:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:55,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:24:55,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:24:55,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970336159] [2023-12-15 20:24:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:55,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:55,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:55,736 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 20:24:55,768 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 20:24:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:55,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 20:24:55,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1329 proven. 120 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2023-12-15 20:24:56,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:24:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 42 proven. 57 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-15 20:24:56,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:56,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473270756] [2023-12-15 20:24:56,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:24:56,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970336159] [2023-12-15 20:24:56,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970336159] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:24:56,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:24:56,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2023-12-15 20:24:56,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493169687] [2023-12-15 20:24:56,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:24:56,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 20:24:56,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 20:24:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:24:56,900 INFO L87 Difference]: Start difference. First operand 4143 states and 6268 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 5 states have call successors, (62), 4 states have call predecessors, (62), 7 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) [2023-12-15 20:24:59,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:24:59,299 INFO L93 Difference]: Finished difference Result 15042 states and 22087 transitions. [2023-12-15 20:24:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-15 20:24:59,300 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 5 states have call successors, (62), 4 states have call predecessors, (62), 7 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) Word has length 222 [2023-12-15 20:24:59,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:24:59,321 INFO L225 Difference]: With dead ends: 15042 [2023-12-15 20:24:59,322 INFO L226 Difference]: Without dead ends: 10900 [2023-12-15 20:24:59,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1085, Invalid=3205, Unknown=0, NotChecked=0, Total=4290 [2023-12-15 20:24:59,331 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1429 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:59,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 762 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 20:24:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10900 states. [2023-12-15 20:24:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10900 to 7161. [2023-12-15 20:24:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7161 states, 5637 states have (on average 1.3835373425580983) internal successors, (7799), 5696 states have internal predecessors, (7799), 1264 states have call successors, (1264), 259 states have call predecessors, (1264), 259 states have return successors, (1264), 1205 states have call predecessors, (1264), 1264 states have call successors, (1264) [2023-12-15 20:24:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7161 states to 7161 states and 10327 transitions. [2023-12-15 20:24:59,970 INFO L78 Accepts]: Start accepts. Automaton has 7161 states and 10327 transitions. Word has length 222 [2023-12-15 20:24:59,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:24:59,971 INFO L495 AbstractCegarLoop]: Abstraction has 7161 states and 10327 transitions. [2023-12-15 20:24:59,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 5 states have call successors, (62), 4 states have call predecessors, (62), 7 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) [2023-12-15 20:24:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 7161 states and 10327 transitions. [2023-12-15 20:24:59,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-15 20:24:59,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:24:59,973 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:59,992 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 20:25:00,178 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 20:25:00,178 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:00,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:00,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1757576742, now seen corresponding path program 1 times [2023-12-15 20:25:00,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:00,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326818575] [2023-12-15 20:25:00,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:00,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:00,195 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:00,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168649595] [2023-12-15 20:25:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:00,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:00,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:00,210 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 20:25:00,236 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 20:25:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:00,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:25:00,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:25:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:25:00,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:25:00,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:25:00,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326818575] [2023-12-15 20:25:00,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:25:00,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168649595] [2023-12-15 20:25:00,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168649595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:25:00,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:25:00,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:25:00,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569760491] [2023-12-15 20:25:00,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:25:00,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:25:00,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:25:00,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:25:00,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:25:00,416 INFO L87 Difference]: Start difference. First operand 7161 states and 10327 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:25:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:25:02,008 INFO L93 Difference]: Finished difference Result 20227 states and 29099 transitions. [2023-12-15 20:25:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:25:02,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 222 [2023-12-15 20:25:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:25:02,035 INFO L225 Difference]: With dead ends: 20227 [2023-12-15 20:25:02,035 INFO L226 Difference]: Without dead ends: 12952 [2023-12-15 20:25:02,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 218 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 20:25:02,045 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 608 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:25:02,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 626 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:25:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12952 states. [2023-12-15 20:25:03,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12952 to 12550. [2023-12-15 20:25:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12550 states, 9487 states have (on average 1.3448930114894067) internal successors, (12759), 9597 states have internal predecessors, (12759), 2536 states have call successors, (2536), 526 states have call predecessors, (2536), 526 states have return successors, (2536), 2426 states have call predecessors, (2536), 2536 states have call successors, (2536) [2023-12-15 20:25:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12550 states to 12550 states and 17831 transitions. [2023-12-15 20:25:03,191 INFO L78 Accepts]: Start accepts. Automaton has 12550 states and 17831 transitions. Word has length 222 [2023-12-15 20:25:03,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:25:03,192 INFO L495 AbstractCegarLoop]: Abstraction has 12550 states and 17831 transitions. [2023-12-15 20:25:03,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:25:03,192 INFO L276 IsEmpty]: Start isEmpty. Operand 12550 states and 17831 transitions. [2023-12-15 20:25:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-15 20:25:03,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:25:03,194 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:03,202 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 20:25:03,400 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 20:25:03,400 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:03,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:03,400 INFO L85 PathProgramCache]: Analyzing trace with hash 169228840, now seen corresponding path program 1 times [2023-12-15 20:25:03,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:03,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825231866] [2023-12-15 20:25:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:03,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:03,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190742573] [2023-12-15 20:25:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:03,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:03,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:03,432 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 20:25:03,433 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 20:25:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:03,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:25:03,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:25:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:25:03,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:25:03,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:25:03,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825231866] [2023-12-15 20:25:03,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:25:03,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190742573] [2023-12-15 20:25:03,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190742573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:25:03,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:25:03,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:25:03,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193983954] [2023-12-15 20:25:03,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:25:03,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:25:03,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:25:03,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:25:03,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:25:03,603 INFO L87 Difference]: Start difference. First operand 12550 states and 17831 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:25:05,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:25:05,001 INFO L93 Difference]: Finished difference Result 25568 states and 36340 transitions. [2023-12-15 20:25:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:25:05,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 222 [2023-12-15 20:25:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:25:05,050 INFO L225 Difference]: With dead ends: 25568 [2023-12-15 20:25:05,050 INFO L226 Difference]: Without dead ends: 13019 [2023-12-15 20:25:05,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 219 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 20:25:05,066 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 167 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:25:05,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 415 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:25:05,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13019 states. [2023-12-15 20:25:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13019 to 12979. [2023-12-15 20:25:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12979 states, 9818 states have (on average 1.3365247504583417) internal successors, (13122), 9930 states have internal predecessors, (13122), 2616 states have call successors, (2616), 544 states have call predecessors, (2616), 544 states have return successors, (2616), 2504 states have call predecessors, (2616), 2616 states have call successors, (2616) [2023-12-15 20:25:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12979 states to 12979 states and 18354 transitions. [2023-12-15 20:25:06,389 INFO L78 Accepts]: Start accepts. Automaton has 12979 states and 18354 transitions. Word has length 222 [2023-12-15 20:25:06,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:25:06,389 INFO L495 AbstractCegarLoop]: Abstraction has 12979 states and 18354 transitions. [2023-12-15 20:25:06,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:25:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 12979 states and 18354 transitions. [2023-12-15 20:25:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-15 20:25:06,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:25:06,392 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:06,414 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 20:25:06,598 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 20:25:06,598 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:06,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1463071461, now seen corresponding path program 1 times [2023-12-15 20:25:06,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:06,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517341599] [2023-12-15 20:25:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:06,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:06,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:06,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459838065] [2023-12-15 20:25:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:06,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:06,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:06,662 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 20:25:06,688 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 20:25:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:06,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 20:25:06,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:25:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1083 proven. 36 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2023-12-15 20:25:07,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:25:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-15 20:25:07,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:25:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517341599] [2023-12-15 20:25:07,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:25:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459838065] [2023-12-15 20:25:07,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459838065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:25:07,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:25:07,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-15 20:25:07,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77184337] [2023-12-15 20:25:07,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:25:07,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 20:25:07,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:25:07,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 20:25:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:25:07,492 INFO L87 Difference]: Start difference. First operand 12979 states and 18354 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-12-15 20:25:10,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:25:10,010 INFO L93 Difference]: Finished difference Result 26714 states and 37596 transitions. [2023-12-15 20:25:10,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 20:25:10,010 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) Word has length 223 [2023-12-15 20:25:10,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:25:10,039 INFO L225 Difference]: With dead ends: 26714 [2023-12-15 20:25:10,040 INFO L226 Difference]: Without dead ends: 13676 [2023-12-15 20:25:10,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=658, Unknown=0, NotChecked=0, Total=930 [2023-12-15 20:25:10,056 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 960 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 20:25:10,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 943 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 20:25:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13676 states. [2023-12-15 20:25:11,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13676 to 10978. [2023-12-15 20:25:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10978 states, 8553 states have (on average 1.3560154331813399) internal successors, (11598), 8619 states have internal predecessors, (11598), 1986 states have call successors, (1986), 438 states have call predecessors, (1986), 438 states have return successors, (1986), 1920 states have call predecessors, (1986), 1986 states have call successors, (1986) [2023-12-15 20:25:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 15570 transitions. [2023-12-15 20:25:11,330 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 15570 transitions. Word has length 223 [2023-12-15 20:25:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:25:11,330 INFO L495 AbstractCegarLoop]: Abstraction has 10978 states and 15570 transitions. [2023-12-15 20:25:11,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-12-15 20:25:11,331 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 15570 transitions. [2023-12-15 20:25:11,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-15 20:25:11,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:25:11,339 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:11,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-15 20:25:11,540 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 20:25:11,540 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:11,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:11,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1243547933, now seen corresponding path program 1 times [2023-12-15 20:25:11,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:11,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54357009] [2023-12-15 20:25:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:11,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:11,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:11,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190599137] [2023-12-15 20:25:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:11,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:11,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:11,562 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:25:11,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 20:25:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:11,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:25:11,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:25:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1256 proven. 192 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2023-12-15 20:25:12,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:25:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 87 proven. 201 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2023-12-15 20:25:13,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:25:13,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54357009] [2023-12-15 20:25:13,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:25:13,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190599137] [2023-12-15 20:25:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190599137] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:25:13,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:25:13,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-15 20:25:13,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475296207] [2023-12-15 20:25:13,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:25:13,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-15 20:25:13,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:25:13,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-15 20:25:13,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2023-12-15 20:25:13,406 INFO L87 Difference]: Start difference. First operand 10978 states and 15570 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 7 states have call successors, (61), 4 states have call predecessors, (61), 10 states have return successors, (62), 7 states have call predecessors, (62), 7 states have call successors, (62) [2023-12-15 20:25:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:25:14,919 INFO L93 Difference]: Finished difference Result 18672 states and 26334 transitions. [2023-12-15 20:25:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 20:25:14,919 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 7 states have call successors, (61), 4 states have call predecessors, (61), 10 states have return successors, (62), 7 states have call predecessors, (62), 7 states have call successors, (62) Word has length 223 [2023-12-15 20:25:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:25:14,931 INFO L225 Difference]: With dead ends: 18672 [2023-12-15 20:25:14,931 INFO L226 Difference]: Without dead ends: 7695 [2023-12-15 20:25:14,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=969, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 20:25:14,942 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 559 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:25:14,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 412 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:25:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7695 states. [2023-12-15 20:25:15,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7695 to 6734. [2023-12-15 20:25:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6734 states, 5249 states have (on average 1.3591160220994476) internal successors, (7134), 5289 states have internal predecessors, (7134), 1164 states have call successors, (1164), 320 states have call predecessors, (1164), 320 states have return successors, (1164), 1124 states have call predecessors, (1164), 1164 states have call successors, (1164) [2023-12-15 20:25:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6734 states to 6734 states and 9462 transitions. [2023-12-15 20:25:15,692 INFO L78 Accepts]: Start accepts. Automaton has 6734 states and 9462 transitions. Word has length 223 [2023-12-15 20:25:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:25:15,693 INFO L495 AbstractCegarLoop]: Abstraction has 6734 states and 9462 transitions. [2023-12-15 20:25:15,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 7 states have call successors, (61), 4 states have call predecessors, (61), 10 states have return successors, (62), 7 states have call predecessors, (62), 7 states have call successors, (62) [2023-12-15 20:25:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 6734 states and 9462 transitions. [2023-12-15 20:25:15,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-15 20:25:15,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:25:15,694 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:15,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-15 20:25:15,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 20:25:15,900 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:15,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:15,901 INFO L85 PathProgramCache]: Analyzing trace with hash -819381931, now seen corresponding path program 1 times [2023-12-15 20:25:15,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:15,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62610239] [2023-12-15 20:25:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:15,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:15,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125091440] [2023-12-15 20:25:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:15,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:15,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:15,917 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:25:15,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 20:25:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:16,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 20:25:16,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:25:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1083 proven. 36 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2023-12-15 20:25:16,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:25:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-15 20:25:16,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:25:16,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62610239] [2023-12-15 20:25:16,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:25:16,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125091440] [2023-12-15 20:25:16,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125091440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:25:16,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:25:16,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-15 20:25:16,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953066097] [2023-12-15 20:25:16,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:25:16,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:25:16,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:25:16,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:25:16,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:25:16,553 INFO L87 Difference]: Start difference. First operand 6734 states and 9462 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-12-15 20:25:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:25:18,112 INFO L93 Difference]: Finished difference Result 15424 states and 21416 transitions. [2023-12-15 20:25:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 20:25:18,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) Word has length 223 [2023-12-15 20:25:18,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:25:18,129 INFO L225 Difference]: With dead ends: 15424 [2023-12-15 20:25:18,129 INFO L226 Difference]: Without dead ends: 8691 [2023-12-15 20:25:18,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2023-12-15 20:25:18,139 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 446 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:25:18,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 540 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:25:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8691 states. [2023-12-15 20:25:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8691 to 6732. [2023-12-15 20:25:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6732 states, 5247 states have (on average 1.3531541833428626) internal successors, (7100), 5287 states have internal predecessors, (7100), 1164 states have call successors, (1164), 320 states have call predecessors, (1164), 320 states have return successors, (1164), 1124 states have call predecessors, (1164), 1164 states have call successors, (1164) [2023-12-15 20:25:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6732 states to 6732 states and 9428 transitions. [2023-12-15 20:25:18,961 INFO L78 Accepts]: Start accepts. Automaton has 6732 states and 9428 transitions. Word has length 223 [2023-12-15 20:25:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:25:18,961 INFO L495 AbstractCegarLoop]: Abstraction has 6732 states and 9428 transitions. [2023-12-15 20:25:18,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-12-15 20:25:18,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6732 states and 9428 transitions. [2023-12-15 20:25:18,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-15 20:25:18,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:25:18,963 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:18,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 20:25:19,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 20:25:19,168 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:19,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash -514180967, now seen corresponding path program 1 times [2023-12-15 20:25:19,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:19,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074340677] [2023-12-15 20:25:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:19,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:19,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:19,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977416407] [2023-12-15 20:25:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:19,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:19,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:19,185 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:25:19,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-15 20:25:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:19,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:25:19,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:25:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2023-12-15 20:25:19,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:25:19,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:25:19,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074340677] [2023-12-15 20:25:19,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:25:19,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977416407] [2023-12-15 20:25:19,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977416407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:25:19,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:25:19,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:25:19,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016244187] [2023-12-15 20:25:19,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:25:19,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:25:19,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:25:19,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:25:19,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:25:19,741 INFO L87 Difference]: Start difference. First operand 6732 states and 9428 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-15 20:25:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:25:20,815 INFO L93 Difference]: Finished difference Result 14904 states and 20867 transitions. [2023-12-15 20:25:20,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:25:20,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 223 [2023-12-15 20:25:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:25:20,857 INFO L225 Difference]: With dead ends: 14904 [2023-12-15 20:25:20,857 INFO L226 Difference]: Without dead ends: 8173 [2023-12-15 20:25:20,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:25:20,864 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 391 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:25:20,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 369 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:25:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8173 states. [2023-12-15 20:25:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8173 to 8149. [2023-12-15 20:25:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8149 states, 6365 states have (on average 1.3508248232521602) internal successors, (8598), 6410 states have internal predecessors, (8598), 1398 states have call successors, (1398), 385 states have call predecessors, (1398), 385 states have return successors, (1398), 1353 states have call predecessors, (1398), 1398 states have call successors, (1398) [2023-12-15 20:25:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8149 states to 8149 states and 11394 transitions. [2023-12-15 20:25:21,717 INFO L78 Accepts]: Start accepts. Automaton has 8149 states and 11394 transitions. Word has length 223 [2023-12-15 20:25:21,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:25:21,717 INFO L495 AbstractCegarLoop]: Abstraction has 8149 states and 11394 transitions. [2023-12-15 20:25:21,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-15 20:25:21,718 INFO L276 IsEmpty]: Start isEmpty. Operand 8149 states and 11394 transitions. [2023-12-15 20:25:21,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-15 20:25:21,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:25:21,719 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:21,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-15 20:25:21,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:21,925 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:21,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash -295326249, now seen corresponding path program 1 times [2023-12-15 20:25:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:21,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866281055] [2023-12-15 20:25:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:21,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:21,939 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:21,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065060517] [2023-12-15 20:25:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:21,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:21,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:21,941 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:25:21,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-15 20:25:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:22,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:25:22,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:25:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1201 proven. 75 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-12-15 20:25:22,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:25:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 117 proven. 78 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2023-12-15 20:25:23,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:25:23,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866281055] [2023-12-15 20:25:23,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:25:23,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065060517] [2023-12-15 20:25:23,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065060517] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:25:23,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:25:23,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-15 20:25:23,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131721984] [2023-12-15 20:25:23,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:25:23,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 20:25:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:25:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 20:25:23,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:25:23,092 INFO L87 Difference]: Start difference. First operand 8149 states and 11394 transitions. Second operand has 16 states, 16 states have (on average 7.8125) internal successors, (125), 16 states have internal predecessors, (125), 6 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) [2023-12-15 20:25:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:25:25,415 INFO L93 Difference]: Finished difference Result 18986 states and 26290 transitions. [2023-12-15 20:25:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 20:25:25,416 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.8125) internal successors, (125), 16 states have internal predecessors, (125), 6 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) Word has length 223 [2023-12-15 20:25:25,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:25:25,435 INFO L225 Difference]: With dead ends: 18986 [2023-12-15 20:25:25,436 INFO L226 Difference]: Without dead ends: 10838 [2023-12-15 20:25:25,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=286, Invalid=526, Unknown=0, NotChecked=0, Total=812 [2023-12-15 20:25:25,447 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 802 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:25:25,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 688 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:25:25,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10838 states. [2023-12-15 20:25:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10838 to 8071. [2023-12-15 20:25:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8071 states, 6417 states have (on average 1.359046283309958) internal successors, (8721), 6454 states have internal predecessors, (8721), 1296 states have call successors, (1296), 357 states have call predecessors, (1296), 357 states have return successors, (1296), 1259 states have call predecessors, (1296), 1296 states have call successors, (1296) [2023-12-15 20:25:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8071 states to 8071 states and 11313 transitions. [2023-12-15 20:25:26,347 INFO L78 Accepts]: Start accepts. Automaton has 8071 states and 11313 transitions. Word has length 223 [2023-12-15 20:25:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:25:26,347 INFO L495 AbstractCegarLoop]: Abstraction has 8071 states and 11313 transitions. [2023-12-15 20:25:26,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.8125) internal successors, (125), 16 states have internal predecessors, (125), 6 states have call successors, (68), 4 states have call predecessors, (68), 8 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) [2023-12-15 20:25:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 8071 states and 11313 transitions. [2023-12-15 20:25:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-15 20:25:26,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:25:26,349 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:26,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-15 20:25:26,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:26,554 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:26,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash -352584551, now seen corresponding path program 1 times [2023-12-15 20:25:26,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:26,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091839148] [2023-12-15 20:25:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:26,571 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:26,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854333374] [2023-12-15 20:25:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:26,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:26,572 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:25:26,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-15 20:25:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:26,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 20:25:26,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:25:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2023-12-15 20:25:27,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:25:27,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:25:27,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091839148] [2023-12-15 20:25:27,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:25:27,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854333374] [2023-12-15 20:25:27,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854333374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:25:27,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:25:27,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:25:27,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98837728] [2023-12-15 20:25:27,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:25:27,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:25:27,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:25:27,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:25:27,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:25:27,242 INFO L87 Difference]: Start difference. First operand 8071 states and 11313 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-15 20:25:28,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:25:28,518 INFO L93 Difference]: Finished difference Result 16211 states and 22703 transitions. [2023-12-15 20:25:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:25:28,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 223 [2023-12-15 20:25:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:25:28,534 INFO L225 Difference]: With dead ends: 16211 [2023-12-15 20:25:28,534 INFO L226 Difference]: Without dead ends: 8141 [2023-12-15 20:25:28,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:25:28,546 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 319 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:25:28,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 530 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:25:28,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8141 states. [2023-12-15 20:25:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8141 to 8081. [2023-12-15 20:25:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8081 states, 6427 states have (on average 1.3572428815932784) internal successors, (8723), 6464 states have internal predecessors, (8723), 1296 states have call successors, (1296), 357 states have call predecessors, (1296), 357 states have return successors, (1296), 1259 states have call predecessors, (1296), 1296 states have call successors, (1296) [2023-12-15 20:25:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 11315 transitions. [2023-12-15 20:25:29,444 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 11315 transitions. Word has length 223 [2023-12-15 20:25:29,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:25:29,445 INFO L495 AbstractCegarLoop]: Abstraction has 8081 states and 11315 transitions. [2023-12-15 20:25:29,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-15 20:25:29,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 11315 transitions. [2023-12-15 20:25:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-15 20:25:29,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:25:29,448 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:29,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-15 20:25:29,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:29,653 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:29,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash -242762907, now seen corresponding path program 1 times [2023-12-15 20:25:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:29,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786908978] [2023-12-15 20:25:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:29,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325098234] [2023-12-15 20:25:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:29,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:29,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:29,669 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:25:29,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-15 20:25:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:29,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:25:29,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:25:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:25:30,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:25:30,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:25:30,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786908978] [2023-12-15 20:25:30,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:25:30,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325098234] [2023-12-15 20:25:30,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325098234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:25:30,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:25:30,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:25:30,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551422614] [2023-12-15 20:25:30,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:25:30,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:25:30,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:25:30,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:25:30,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:25:30,036 INFO L87 Difference]: Start difference. First operand 8081 states and 11315 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:25:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:25:31,063 INFO L93 Difference]: Finished difference Result 13633 states and 19103 transitions. [2023-12-15 20:25:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:25:31,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2023-12-15 20:25:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:25:31,078 INFO L225 Difference]: With dead ends: 13633 [2023-12-15 20:25:31,078 INFO L226 Difference]: Without dead ends: 8096 [2023-12-15 20:25:31,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:25:31,085 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 74 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:25:31,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 536 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:25:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2023-12-15 20:25:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 8081. [2023-12-15 20:25:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8081 states, 6427 states have (on average 1.3559981328769255) internal successors, (8715), 6464 states have internal predecessors, (8715), 1296 states have call successors, (1296), 357 states have call predecessors, (1296), 357 states have return successors, (1296), 1259 states have call predecessors, (1296), 1296 states have call successors, (1296) [2023-12-15 20:25:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 11307 transitions. [2023-12-15 20:25:31,964 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 11307 transitions. Word has length 224 [2023-12-15 20:25:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:25:31,964 INFO L495 AbstractCegarLoop]: Abstraction has 8081 states and 11307 transitions. [2023-12-15 20:25:31,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:25:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 11307 transitions. [2023-12-15 20:25:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-15 20:25:31,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:25:31,966 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:31,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-15 20:25:32,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:32,171 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:32,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:32,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1414250448, now seen corresponding path program 1 times [2023-12-15 20:25:32,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:32,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398361810] [2023-12-15 20:25:32,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:32,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:32,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:32,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941066026] [2023-12-15 20:25:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:32,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:32,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:32,187 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:25:32,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-15 20:25:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:32,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 20:25:32,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:25:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:25:32,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:25:32,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:25:32,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398361810] [2023-12-15 20:25:32,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:25:32,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941066026] [2023-12-15 20:25:32,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941066026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:25:32,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:25:32,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:25:32,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540632540] [2023-12-15 20:25:32,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:25:32,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:25:32,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:25:32,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:25:32,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:25:32,629 INFO L87 Difference]: Start difference. First operand 8081 states and 11307 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:25:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:25:34,327 INFO L93 Difference]: Finished difference Result 21252 states and 29715 transitions. [2023-12-15 20:25:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:25:34,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2023-12-15 20:25:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:25:34,352 INFO L225 Difference]: With dead ends: 21252 [2023-12-15 20:25:34,352 INFO L226 Difference]: Without dead ends: 13071 [2023-12-15 20:25:34,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:25:34,365 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 240 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:25:34,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 888 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:25:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13071 states. [2023-12-15 20:25:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13071 to 11890. [2023-12-15 20:25:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11890 states, 9508 states have (on average 1.3563315103071099) internal successors, (12896), 9562 states have internal predecessors, (12896), 1867 states have call successors, (1867), 514 states have call predecessors, (1867), 514 states have return successors, (1867), 1813 states have call predecessors, (1867), 1867 states have call successors, (1867) [2023-12-15 20:25:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11890 states to 11890 states and 16630 transitions. [2023-12-15 20:25:35,776 INFO L78 Accepts]: Start accepts. Automaton has 11890 states and 16630 transitions. Word has length 224 [2023-12-15 20:25:35,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:25:35,776 INFO L495 AbstractCegarLoop]: Abstraction has 11890 states and 16630 transitions. [2023-12-15 20:25:35,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:25:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand 11890 states and 16630 transitions. [2023-12-15 20:25:35,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-15 20:25:35,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:25:35,778 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:35,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-15 20:25:35,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:35,985 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:25:35,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:25:35,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1633105166, now seen corresponding path program 1 times [2023-12-15 20:25:35,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:25:35,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640803347] [2023-12-15 20:25:35,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:35,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:25:36,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:25:36,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483981484] [2023-12-15 20:25:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:25:36,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:36,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:25:36,007 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:25:36,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-15 20:25:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:25:36,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 20:25:36,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 20:25:36,244 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:25:36,249 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 20:25:36,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-15 20:25:36,273 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:25:36,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:25:36,444 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 225 with TraceHistMax 34,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-15 20:25:36,448 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:25:36,450 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:25:36,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:25:36 BoogieIcfgContainer [2023-12-15 20:25:36,452 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:25:36,453 INFO L158 Benchmark]: Toolchain (without parser) took 63273.87ms. Allocated memory was 220.2MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 177.7MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 928.5MB. Max. memory is 8.0GB. [2023-12-15 20:25:36,453 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 164.6MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:25:36,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.25ms. Allocated memory is still 220.2MB. Free memory was 177.7MB in the beginning and 161.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 20:25:36,453 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.11ms. Allocated memory is still 220.2MB. Free memory was 161.4MB in the beginning and 156.2MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:25:36,454 INFO L158 Benchmark]: Boogie Preprocessor took 72.94ms. Allocated memory is still 220.2MB. Free memory was 156.2MB in the beginning and 150.5MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:25:36,454 INFO L158 Benchmark]: RCFGBuilder took 528.41ms. Allocated memory is still 220.2MB. Free memory was 150.0MB in the beginning and 115.9MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-15 20:25:36,454 INFO L158 Benchmark]: TraceAbstraction took 62379.10ms. Allocated memory was 220.2MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 115.3MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 865.6MB. Max. memory is 8.0GB. [2023-12-15 20:25:36,455 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 164.6MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 252.25ms. Allocated memory is still 220.2MB. Free memory was 177.7MB in the beginning and 161.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.11ms. Allocated memory is still 220.2MB. Free memory was 161.4MB in the beginning and 156.2MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 72.94ms. Allocated memory is still 220.2MB. Free memory was 156.2MB in the beginning and 150.5MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 528.41ms. Allocated memory is still 220.2MB. Free memory was 150.0MB in the beginning and 115.9MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 62379.10ms. Allocated memory was 220.2MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 115.3MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 865.6MB. 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 225 with TraceHistMax 34,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.3s, OverallIterations: 24, TraceHistogramMax: 34, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12591 SdHoareTripleChecker+Valid, 10.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12352 mSDsluCounter, 13525 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9399 mSDsCounter, 5631 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10999 IncrementalHoareTripleChecker+Invalid, 16630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5631 mSolverCounterUnsat, 4126 mSDtfsCounter, 10999 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7348 GetRequests, 6957 SyntacticMatches, 0 SemanticMatches, 391 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5824 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12979occurred in iteration=15, InterpolantAutomatonStates: 351, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.6s AutomataMinimizationTime, 23 MinimizatonAttempts, 20926 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 5308 NumberOfCodeBlocks, 5308 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 7060 ConstructedInterpolants, 0 QuantifiedInterpolants, 32446 SizeOfPredicates, 101 NumberOfNonLiveVariables, 11576 ConjunctsInSsa, 185 ConjunctsInUnsatCore, 32 InterpolantComputations, 14 PerfectInterpolantSequences, 70560/71808 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