/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:02:09,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:02:09,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 03:02:09,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:02:09,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:02:09,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:02:09,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:02:09,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:02:09,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:02:09,617 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:02:09,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:02:09,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:02:09,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:02:09,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:02:09,619 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:02:09,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:02:09,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:02:09,619 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:02:09,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:02:09,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:02:09,621 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:02:09,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:02:09,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:02:09,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:02:09,621 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:02:09,622 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:02:09,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:02:09,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:02:09,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:02:09,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:02:09,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:02:09,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:02:09,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:02:09,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:02:09,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:02:09,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:02:09,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:02:09,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:02:09,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:02:09,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:02:09,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:02:09,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:02:09,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:02:09,625 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:02:09,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:02:09,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:02:09,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:02:09,839 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:02:09,839 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:02:09,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i [2023-12-16 03:02:10,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:02:11,208 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:02:11,208 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i [2023-12-16 03:02:11,221 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e400bc8/5ac5f70832bd4e85a78a36ade891c6c8/FLAG482ebaa8f [2023-12-16 03:02:11,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e400bc8/5ac5f70832bd4e85a78a36ade891c6c8 [2023-12-16 03:02:11,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:02:11,235 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:02:11,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:02:11,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:02:11,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:02:11,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68666118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11, skipping insertion in model container [2023-12-16 03:02:11,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,279 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:02:11,379 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_fillercodesize_ps-cn-500_file-8.i[915,928] [2023-12-16 03:02:11,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:02:11,593 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:02:11,605 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_fillercodesize_ps-cn-500_file-8.i[915,928] [2023-12-16 03:02:11,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:02:11,717 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:02:11,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11 WrapperNode [2023-12-16 03:02:11,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:02:11,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:02:11,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:02:11,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:02:11,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,793 INFO L138 Inliner]: procedures = 26, calls = 147, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 846 [2023-12-16 03:02:11,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:02:11,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:02:11,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:02:11,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:02:11,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,852 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]. [2023-12-16 03:02:11,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:02:11,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:02:11,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:02:11,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:02:11,919 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (1/1) ... [2023-12-16 03:02:11,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:02:11,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:12,009 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) [2023-12-16 03:02:12,032 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 [2023-12-16 03:02:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:02:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:02:12,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:02:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:02:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:02:12,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:02:12,160 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:02:12,162 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:02:12,805 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:02:12,874 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:02:12,875 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:02:12,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:02:12 BoogieIcfgContainer [2023-12-16 03:02:12,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:02:12,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:02:12,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:02:12,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:02:12,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:02:11" (1/3) ... [2023-12-16 03:02:12,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6caa2806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:02:12, skipping insertion in model container [2023-12-16 03:02:12,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:11" (2/3) ... [2023-12-16 03:02:12,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6caa2806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:02:12, skipping insertion in model container [2023-12-16 03:02:12,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:02:12" (3/3) ... [2023-12-16 03:02:12,883 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-8.i [2023-12-16 03:02:12,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:02:12,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:02:12,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:02:12,958 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;@41ef02c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:02:12,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:02:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 211 states have (on average 1.5687203791469195) internal successors, (331), 212 states have internal predecessors, (331), 134 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2023-12-16 03:02:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2023-12-16 03:02:13,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:13,035 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:13,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:13,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1907093697, now seen corresponding path program 1 times [2023-12-16 03:02:13,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:13,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220866393] [2023-12-16 03:02:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:13,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:13,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:13,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220866393] [2023-12-16 03:02:13,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:02:13,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677652750] [2023-12-16 03:02:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:13,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:13,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:13,799 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) [2023-12-16 03:02:13,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 03:02:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:14,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:02:14,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 35378 trivial. 0 not checked. [2023-12-16 03:02:14,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:14,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677652750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:14,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:14,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:02:14,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906366094] [2023-12-16 03:02:14,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:14,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:02:14,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:02:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:02:14,346 INFO L87 Difference]: Start difference. First operand has 348 states, 211 states have (on average 1.5687203791469195) internal successors, (331), 212 states have internal predecessors, (331), 134 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (134), 2 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 2 states have call successors, (134) [2023-12-16 03:02:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:14,444 INFO L93 Difference]: Finished difference Result 693 states and 1330 transitions. [2023-12-16 03:02:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:02:14,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (134), 2 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 2 states have call successors, (134) Word has length 826 [2023-12-16 03:02:14,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:14,459 INFO L225 Difference]: With dead ends: 693 [2023-12-16 03:02:14,459 INFO L226 Difference]: Without dead ends: 346 [2023-12-16 03:02:14,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:02:14,468 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:14,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 590 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:02:14,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-16 03:02:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2023-12-16 03:02:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 210 states have (on average 1.5476190476190477) internal successors, (325), 210 states have internal predecessors, (325), 134 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2023-12-16 03:02:14,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 593 transitions. [2023-12-16 03:02:14,587 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 593 transitions. Word has length 826 [2023-12-16 03:02:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:14,588 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 593 transitions. [2023-12-16 03:02:14,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (134), 2 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 2 states have call successors, (134) [2023-12-16 03:02:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 593 transitions. [2023-12-16 03:02:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2023-12-16 03:02:14,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:14,617 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:14,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:14,832 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 [2023-12-16 03:02:14,833 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:14,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash 12745857, now seen corresponding path program 1 times [2023-12-16 03:02:14,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:14,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001420801] [2023-12-16 03:02:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:14,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:14,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:14,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879166546] [2023-12-16 03:02:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:14,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:14,973 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) [2023-12-16 03:02:14,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 03:02:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:15,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:02:15,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-12-16 03:02:16,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:16,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:16,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001420801] [2023-12-16 03:02:16,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:16,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879166546] [2023-12-16 03:02:16,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879166546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:16,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:16,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:02:16,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655023706] [2023-12-16 03:02:16,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:16,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:02:16,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:02:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:02:16,403 INFO L87 Difference]: Start difference. First operand 346 states and 593 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:16,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:16,829 INFO L93 Difference]: Finished difference Result 1204 states and 2071 transitions. [2023-12-16 03:02:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:02:16,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 826 [2023-12-16 03:02:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:16,839 INFO L225 Difference]: With dead ends: 1204 [2023-12-16 03:02:16,839 INFO L226 Difference]: Without dead ends: 859 [2023-12-16 03:02:16,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 823 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:02:16,843 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 489 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:16,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1719 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:02:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-12-16 03:02:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 854. [2023-12-16 03:02:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 547 states have (on average 1.586837294332724) internal successors, (868), 548 states have internal predecessors, (868), 303 states have call successors, (303), 3 states have call predecessors, (303), 3 states have return successors, (303), 302 states have call predecessors, (303), 303 states have call successors, (303) [2023-12-16 03:02:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1474 transitions. [2023-12-16 03:02:17,000 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1474 transitions. Word has length 826 [2023-12-16 03:02:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:17,002 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1474 transitions. [2023-12-16 03:02:17,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1474 transitions. [2023-12-16 03:02:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:17,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:17,025 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:17,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:17,250 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 [2023-12-16 03:02:17,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:17,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash -787223817, now seen corresponding path program 1 times [2023-12-16 03:02:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962771684] [2023-12-16 03:02:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:17,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:17,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984201343] [2023-12-16 03:02:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:17,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:17,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:17,446 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) [2023-12-16 03:02:17,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 03:02:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:18,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:02:18,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-12-16 03:02:18,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:18,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:18,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962771684] [2023-12-16 03:02:18,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:18,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984201343] [2023-12-16 03:02:18,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984201343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:18,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:18,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:02:18,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446328761] [2023-12-16 03:02:18,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:18,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:02:18,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:18,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:02:18,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:02:18,104 INFO L87 Difference]: Start difference. First operand 854 states and 1474 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:18,195 INFO L93 Difference]: Finished difference Result 2551 states and 4402 transitions. [2023-12-16 03:02:18,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:02:18,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 827 [2023-12-16 03:02:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:18,208 INFO L225 Difference]: With dead ends: 2551 [2023-12-16 03:02:18,208 INFO L226 Difference]: Without dead ends: 1698 [2023-12-16 03:02:18,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:02:18,213 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 563 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:18,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1555 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:02:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2023-12-16 03:02:18,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1694. [2023-12-16 03:02:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1081 states have (on average 1.5698427382053655) internal successors, (1697), 1083 states have internal predecessors, (1697), 606 states have call successors, (606), 6 states have call predecessors, (606), 6 states have return successors, (606), 604 states have call predecessors, (606), 606 states have call successors, (606) [2023-12-16 03:02:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2909 transitions. [2023-12-16 03:02:18,396 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2909 transitions. Word has length 827 [2023-12-16 03:02:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:18,397 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 2909 transitions. [2023-12-16 03:02:18,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2909 transitions. [2023-12-16 03:02:18,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:18,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:18,404 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:18,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:18,613 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 [2023-12-16 03:02:18,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:18,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1210295313, now seen corresponding path program 1 times [2023-12-16 03:02:18,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:18,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372299978] [2023-12-16 03:02:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:18,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:18,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:18,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475667654] [2023-12-16 03:02:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:18,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:18,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:18,692 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) [2023-12-16 03:02:18,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 03:02:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:19,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:02:19,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-12-16 03:02:19,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:19,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372299978] [2023-12-16 03:02:19,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475667654] [2023-12-16 03:02:19,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475667654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:19,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:19,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:02:19,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126292154] [2023-12-16 03:02:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:19,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:02:19,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:19,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:02:19,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:02:19,117 INFO L87 Difference]: Start difference. First operand 1694 states and 2909 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:19,284 INFO L93 Difference]: Finished difference Result 3391 states and 5822 transitions. [2023-12-16 03:02:19,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:02:19,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 827 [2023-12-16 03:02:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:19,292 INFO L225 Difference]: With dead ends: 3391 [2023-12-16 03:02:19,293 INFO L226 Difference]: Without dead ends: 1698 [2023-12-16 03:02:19,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:02:19,298 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 549 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:19,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 2527 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:02:19,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2023-12-16 03:02:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1694. [2023-12-16 03:02:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1081 states have (on average 1.567067530064755) internal successors, (1694), 1083 states have internal predecessors, (1694), 606 states have call successors, (606), 6 states have call predecessors, (606), 6 states have return successors, (606), 604 states have call predecessors, (606), 606 states have call successors, (606) [2023-12-16 03:02:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2906 transitions. [2023-12-16 03:02:19,466 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2906 transitions. Word has length 827 [2023-12-16 03:02:19,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:19,467 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 2906 transitions. [2023-12-16 03:02:19,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:19,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2906 transitions. [2023-12-16 03:02:19,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:19,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:19,474 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:19,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 03:02:19,683 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 [2023-12-16 03:02:19,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:19,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -635071853, now seen corresponding path program 1 times [2023-12-16 03:02:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710070950] [2023-12-16 03:02:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:19,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:19,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335292490] [2023-12-16 03:02:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:19,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:19,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:19,737 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) [2023-12-16 03:02:19,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 03:02:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:20,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:02:20,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-12-16 03:02:20,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:20,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710070950] [2023-12-16 03:02:20,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335292490] [2023-12-16 03:02:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335292490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:20,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:20,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:02:20,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116988758] [2023-12-16 03:02:20,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:20,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:02:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:02:20,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:02:20,157 INFO L87 Difference]: Start difference. First operand 1694 states and 2906 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:20,270 INFO L93 Difference]: Finished difference Result 5080 states and 8716 transitions. [2023-12-16 03:02:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:02:20,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 827 [2023-12-16 03:02:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:20,285 INFO L225 Difference]: With dead ends: 5080 [2023-12-16 03:02:20,285 INFO L226 Difference]: Without dead ends: 3387 [2023-12-16 03:02:20,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:02:20,292 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 583 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:20,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1711 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:02:20,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2023-12-16 03:02:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 3385. [2023-12-16 03:02:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 2160 states have (on average 1.5592592592592593) internal successors, (3368), 2164 states have internal predecessors, (3368), 1212 states have call successors, (1212), 12 states have call predecessors, (1212), 12 states have return successors, (1212), 1208 states have call predecessors, (1212), 1212 states have call successors, (1212) [2023-12-16 03:02:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 5792 transitions. [2023-12-16 03:02:20,611 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 5792 transitions. Word has length 827 [2023-12-16 03:02:20,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:20,611 INFO L495 AbstractCegarLoop]: Abstraction has 3385 states and 5792 transitions. [2023-12-16 03:02:20,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 5792 transitions. [2023-12-16 03:02:20,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:20,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:20,618 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:20,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:20,826 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 [2023-12-16 03:02:20,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:20,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:20,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2071547541, now seen corresponding path program 1 times [2023-12-16 03:02:20,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:20,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285249053] [2023-12-16 03:02:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:20,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:20,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:20,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070567332] [2023-12-16 03:02:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:20,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:20,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:20,927 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) [2023-12-16 03:02:20,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 03:02:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:21,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:02:21,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-12-16 03:02:21,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:21,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:21,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285249053] [2023-12-16 03:02:21,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:21,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070567332] [2023-12-16 03:02:21,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070567332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:21,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:21,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:02:21,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576684288] [2023-12-16 03:02:21,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:21,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:02:21,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:21,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:02:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:02:21,358 INFO L87 Difference]: Start difference. First operand 3385 states and 5792 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:21,541 INFO L93 Difference]: Finished difference Result 8827 states and 15156 transitions. [2023-12-16 03:02:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:02:21,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 827 [2023-12-16 03:02:21,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:21,562 INFO L225 Difference]: With dead ends: 8827 [2023-12-16 03:02:21,562 INFO L226 Difference]: Without dead ends: 5443 [2023-12-16 03:02:21,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:02:21,572 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 288 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:21,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1243 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:02:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5443 states. [2023-12-16 03:02:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5443 to 5433. [2023-12-16 03:02:22,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5433 states, 3744 states have (on average 1.6036324786324787) internal successors, (6004), 3760 states have internal predecessors, (6004), 1664 states have call successors, (1664), 24 states have call predecessors, (1664), 24 states have return successors, (1664), 1648 states have call predecessors, (1664), 1664 states have call successors, (1664) [2023-12-16 03:02:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 9332 transitions. [2023-12-16 03:02:22,097 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 9332 transitions. Word has length 827 [2023-12-16 03:02:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:22,097 INFO L495 AbstractCegarLoop]: Abstraction has 5433 states and 9332 transitions. [2023-12-16 03:02:22,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 9332 transitions. [2023-12-16 03:02:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:22,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:22,106 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:22,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 03:02:22,313 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 [2023-12-16 03:02:22,314 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:22,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:22,315 INFO L85 PathProgramCache]: Analyzing trace with hash -943556077, now seen corresponding path program 1 times [2023-12-16 03:02:22,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:22,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428709191] [2023-12-16 03:02:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:22,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:22,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:22,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471949161] [2023-12-16 03:02:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:22,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:22,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:22,375 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) [2023-12-16 03:02:22,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 03:02:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:22,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 03:02:22,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-12-16 03:02:22,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:22,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:22,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428709191] [2023-12-16 03:02:22,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:22,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471949161] [2023-12-16 03:02:22,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471949161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:22,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:22,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:02:22,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86074614] [2023-12-16 03:02:22,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:22,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:02:22,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:02:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:02:22,879 INFO L87 Difference]: Start difference. First operand 5433 states and 9332 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:23,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:23,364 INFO L93 Difference]: Finished difference Result 14767 states and 25396 transitions. [2023-12-16 03:02:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:02:23,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 827 [2023-12-16 03:02:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:23,415 INFO L225 Difference]: With dead ends: 14767 [2023-12-16 03:02:23,416 INFO L226 Difference]: Without dead ends: 9335 [2023-12-16 03:02:23,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:02:23,434 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 1270 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:23,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 1904 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:02:23,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9335 states. [2023-12-16 03:02:24,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9335 to 9321. [2023-12-16 03:02:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9321 states, 6688 states have (on average 1.6073564593301435) internal successors, (10750), 6728 states have internal predecessors, (10750), 2584 states have call successors, (2584), 48 states have call predecessors, (2584), 48 states have return successors, (2584), 2544 states have call predecessors, (2584), 2584 states have call successors, (2584) [2023-12-16 03:02:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9321 states to 9321 states and 15918 transitions. [2023-12-16 03:02:24,148 INFO L78 Accepts]: Start accepts. Automaton has 9321 states and 15918 transitions. Word has length 827 [2023-12-16 03:02:24,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:24,148 INFO L495 AbstractCegarLoop]: Abstraction has 9321 states and 15918 transitions. [2023-12-16 03:02:24,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:24,149 INFO L276 IsEmpty]: Start isEmpty. Operand 9321 states and 15918 transitions. [2023-12-16 03:02:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:24,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:24,158 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:24,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:24,367 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 [2023-12-16 03:02:24,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:24,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:24,368 INFO L85 PathProgramCache]: Analyzing trace with hash 425937107, now seen corresponding path program 1 times [2023-12-16 03:02:24,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:24,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584923096] [2023-12-16 03:02:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:24,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:24,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:24,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837889429] [2023-12-16 03:02:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:24,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:24,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:24,424 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) [2023-12-16 03:02:24,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 03:02:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:24,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:02:24,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 6613 proven. 39 refuted. 0 times theorem prover too weak. 28992 trivial. 0 not checked. [2023-12-16 03:02:24,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:02:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 360 proven. 39 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-12-16 03:02:25,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584923096] [2023-12-16 03:02:25,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837889429] [2023-12-16 03:02:25,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837889429] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:02:25,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:02:25,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:02:25,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070813726] [2023-12-16 03:02:25,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:02:25,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:02:25,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:25,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:02:25,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:02:25,363 INFO L87 Difference]: Start difference. First operand 9321 states and 15918 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-16 03:02:26,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:26,349 INFO L93 Difference]: Finished difference Result 18785 states and 31971 transitions. [2023-12-16 03:02:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:02:26,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 827 [2023-12-16 03:02:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:26,380 INFO L225 Difference]: With dead ends: 18785 [2023-12-16 03:02:26,380 INFO L226 Difference]: Without dead ends: 9465 [2023-12-16 03:02:26,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1656 GetRequests, 1646 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:02:26,410 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 376 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:26,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1077 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 03:02:26,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9465 states. [2023-12-16 03:02:27,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9465 to 9353. [2023-12-16 03:02:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9353 states, 6712 states have (on average 1.5890941597139452) internal successors, (10666), 6752 states have internal predecessors, (10666), 2584 states have call successors, (2584), 56 states have call predecessors, (2584), 56 states have return successors, (2584), 2544 states have call predecessors, (2584), 2584 states have call successors, (2584) [2023-12-16 03:02:27,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9353 states to 9353 states and 15834 transitions. [2023-12-16 03:02:27,092 INFO L78 Accepts]: Start accepts. Automaton has 9353 states and 15834 transitions. Word has length 827 [2023-12-16 03:02:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:27,093 INFO L495 AbstractCegarLoop]: Abstraction has 9353 states and 15834 transitions. [2023-12-16 03:02:27,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-16 03:02:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9353 states and 15834 transitions. [2023-12-16 03:02:27,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:27,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:27,104 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:27,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:27,312 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 [2023-12-16 03:02:27,312 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:27,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1379501227, now seen corresponding path program 1 times [2023-12-16 03:02:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128292829] [2023-12-16 03:02:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:27,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:27,364 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:27,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063541569] [2023-12-16 03:02:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:27,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:27,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:27,381 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) [2023-12-16 03:02:27,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 03:02:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:27,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:02:27,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 5745 proven. 33 refuted. 0 times theorem prover too weak. 29866 trivial. 0 not checked. [2023-12-16 03:02:28,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:02:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 366 proven. 33 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-12-16 03:02:28,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:28,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128292829] [2023-12-16 03:02:28,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:28,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063541569] [2023-12-16 03:02:28,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063541569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:02:28,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:02:28,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:02:28,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085172975] [2023-12-16 03:02:28,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:02:28,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:02:28,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:28,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:02:28,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:02:28,408 INFO L87 Difference]: Start difference. First operand 9353 states and 15834 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2023-12-16 03:02:29,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:29,371 INFO L93 Difference]: Finished difference Result 18865 states and 31819 transitions. [2023-12-16 03:02:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:02:29,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) Word has length 827 [2023-12-16 03:02:29,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:29,398 INFO L225 Difference]: With dead ends: 18865 [2023-12-16 03:02:29,398 INFO L226 Difference]: Without dead ends: 9513 [2023-12-16 03:02:29,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1656 GetRequests, 1646 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:02:29,424 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 852 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:29,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1079 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 03:02:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9513 states. [2023-12-16 03:02:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9513 to 9385. [2023-12-16 03:02:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9385 states, 6736 states have (on average 1.5798693586698338) internal successors, (10642), 6776 states have internal predecessors, (10642), 2584 states have call successors, (2584), 64 states have call predecessors, (2584), 64 states have return successors, (2584), 2544 states have call predecessors, (2584), 2584 states have call successors, (2584) [2023-12-16 03:02:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9385 states to 9385 states and 15810 transitions. [2023-12-16 03:02:30,301 INFO L78 Accepts]: Start accepts. Automaton has 9385 states and 15810 transitions. Word has length 827 [2023-12-16 03:02:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:30,302 INFO L495 AbstractCegarLoop]: Abstraction has 9385 states and 15810 transitions. [2023-12-16 03:02:30,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2023-12-16 03:02:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 9385 states and 15810 transitions. [2023-12-16 03:02:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:30,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:30,319 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:30,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:30,528 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 [2023-12-16 03:02:30,529 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:30,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:30,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1904348819, now seen corresponding path program 1 times [2023-12-16 03:02:30,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:30,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890792381] [2023-12-16 03:02:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:30,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:30,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:30,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825553877] [2023-12-16 03:02:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:30,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:30,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:30,652 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) [2023-12-16 03:02:30,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 03:02:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:31,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:02:31,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-12-16 03:02:31,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:31,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890792381] [2023-12-16 03:02:31,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825553877] [2023-12-16 03:02:31,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825553877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:31,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:31,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 03:02:31,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595051544] [2023-12-16 03:02:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:31,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 03:02:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:31,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 03:02:31,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 03:02:31,454 INFO L87 Difference]: Start difference. First operand 9385 states and 15810 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:33,696 INFO L93 Difference]: Finished difference Result 36556 states and 61490 transitions. [2023-12-16 03:02:33,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:02:33,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 827 [2023-12-16 03:02:33,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:33,782 INFO L225 Difference]: With dead ends: 36556 [2023-12-16 03:02:33,782 INFO L226 Difference]: Without dead ends: 27172 [2023-12-16 03:02:33,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 03:02:33,811 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 2605 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:33,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2605 Valid, 2766 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 03:02:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27172 states. [2023-12-16 03:02:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27172 to 16709. [2023-12-16 03:02:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16709 states, 12816 states have (on average 1.6180555555555556) internal successors, (20737), 12886 states have internal predecessors, (20737), 3778 states have call successors, (3778), 114 states have call predecessors, (3778), 114 states have return successors, (3778), 3708 states have call predecessors, (3778), 3778 states have call successors, (3778) [2023-12-16 03:02:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16709 states to 16709 states and 28293 transitions. [2023-12-16 03:02:35,103 INFO L78 Accepts]: Start accepts. Automaton has 16709 states and 28293 transitions. Word has length 827 [2023-12-16 03:02:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:35,104 INFO L495 AbstractCegarLoop]: Abstraction has 16709 states and 28293 transitions. [2023-12-16 03:02:35,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 16709 states and 28293 transitions. [2023-12-16 03:02:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:35,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:35,117 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:35,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-16 03:02:35,325 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 [2023-12-16 03:02:35,326 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:35,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:35,326 INFO L85 PathProgramCache]: Analyzing trace with hash -852278447, now seen corresponding path program 1 times [2023-12-16 03:02:35,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:35,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129495207] [2023-12-16 03:02:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:35,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:35,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:35,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597172726] [2023-12-16 03:02:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:35,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:35,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:35,383 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) [2023-12-16 03:02:35,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 03:02:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:35,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:02:35,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 15699 proven. 270 refuted. 0 times theorem prover too weak. 19675 trivial. 0 not checked. [2023-12-16 03:02:36,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:02:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 129 proven. 270 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-12-16 03:02:37,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:37,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129495207] [2023-12-16 03:02:37,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:37,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597172726] [2023-12-16 03:02:37,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597172726] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:02:37,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:02:37,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:02:37,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035182892] [2023-12-16 03:02:37,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:02:37,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:02:37,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:02:37,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:02:37,069 INFO L87 Difference]: Start difference. First operand 16709 states and 28293 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) [2023-12-16 03:02:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:38,242 INFO L93 Difference]: Finished difference Result 29109 states and 49075 transitions. [2023-12-16 03:02:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 03:02:38,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) Word has length 827 [2023-12-16 03:02:38,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:38,287 INFO L225 Difference]: With dead ends: 29109 [2023-12-16 03:02:38,287 INFO L226 Difference]: Without dead ends: 12365 [2023-12-16 03:02:38,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1656 GetRequests, 1646 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:02:38,317 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 516 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:38,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1057 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 03:02:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12365 states. [2023-12-16 03:02:39,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12365 to 11683. [2023-12-16 03:02:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11683 states, 8946 states have (on average 1.6017214397496087) internal successors, (14329), 8986 states have internal predecessors, (14329), 2632 states have call successors, (2632), 104 states have call predecessors, (2632), 104 states have return successors, (2632), 2592 states have call predecessors, (2632), 2632 states have call successors, (2632) [2023-12-16 03:02:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11683 states to 11683 states and 19593 transitions. [2023-12-16 03:02:39,336 INFO L78 Accepts]: Start accepts. Automaton has 11683 states and 19593 transitions. Word has length 827 [2023-12-16 03:02:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:39,338 INFO L495 AbstractCegarLoop]: Abstraction has 11683 states and 19593 transitions. [2023-12-16 03:02:39,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) [2023-12-16 03:02:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 11683 states and 19593 transitions. [2023-12-16 03:02:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:39,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:39,351 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:39,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:39,567 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 [2023-12-16 03:02:39,568 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:39,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2011270551, now seen corresponding path program 1 times [2023-12-16 03:02:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:39,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94064241] [2023-12-16 03:02:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:39,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:39,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:39,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17339345] [2023-12-16 03:02:39,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:39,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:39,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:39,751 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) [2023-12-16 03:02:39,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 03:02:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:40,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:02:40,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 14875 proven. 282 refuted. 0 times theorem prover too weak. 20487 trivial. 0 not checked. [2023-12-16 03:02:40,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:02:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 117 proven. 282 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-12-16 03:02:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94064241] [2023-12-16 03:02:41,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17339345] [2023-12-16 03:02:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17339345] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:02:41,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:02:41,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:02:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458971090] [2023-12-16 03:02:41,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:02:41,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:02:41,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:02:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:02:41,153 INFO L87 Difference]: Start difference. First operand 11683 states and 19593 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (228), 2 states have call predecessors, (228), 4 states have return successors, (229), 2 states have call predecessors, (229), 2 states have call successors, (229) [2023-12-16 03:02:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:42,267 INFO L93 Difference]: Finished difference Result 21595 states and 35976 transitions. [2023-12-16 03:02:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 03:02:42,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (228), 2 states have call predecessors, (228), 4 states have return successors, (229), 2 states have call predecessors, (229), 2 states have call successors, (229) Word has length 827 [2023-12-16 03:02:42,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:42,374 INFO L225 Difference]: With dead ends: 21595 [2023-12-16 03:02:42,374 INFO L226 Difference]: Without dead ends: 9679 [2023-12-16 03:02:42,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1656 GetRequests, 1646 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:02:42,392 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 277 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:42,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1059 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 03:02:42,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9679 states. [2023-12-16 03:02:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9679 to 9217. [2023-12-16 03:02:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9217 states, 6696 states have (on average 1.5570489844683393) internal successors, (10426), 6730 states have internal predecessors, (10426), 2398 states have call successors, (2398), 122 states have call predecessors, (2398), 122 states have return successors, (2398), 2364 states have call predecessors, (2398), 2398 states have call successors, (2398) [2023-12-16 03:02:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9217 states to 9217 states and 15222 transitions. [2023-12-16 03:02:43,206 INFO L78 Accepts]: Start accepts. Automaton has 9217 states and 15222 transitions. Word has length 827 [2023-12-16 03:02:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:43,206 INFO L495 AbstractCegarLoop]: Abstraction has 9217 states and 15222 transitions. [2023-12-16 03:02:43,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (228), 2 states have call predecessors, (228), 4 states have return successors, (229), 2 states have call predecessors, (229), 2 states have call successors, (229) [2023-12-16 03:02:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 9217 states and 15222 transitions. [2023-12-16 03:02:43,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:43,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:43,215 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:43,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:43,436 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 [2023-12-16 03:02:43,436 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:43,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:43,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1998941609, now seen corresponding path program 1 times [2023-12-16 03:02:43,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:43,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308531158] [2023-12-16 03:02:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:43,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:43,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:43,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053395451] [2023-12-16 03:02:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:43,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:43,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:43,507 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) [2023-12-16 03:02:43,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 03:02:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:43,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:02:43,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-12-16 03:02:44,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:44,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:44,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308531158] [2023-12-16 03:02:44,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:44,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053395451] [2023-12-16 03:02:44,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053395451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:44,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:44,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:02:44,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758553585] [2023-12-16 03:02:44,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:44,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:02:44,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:44,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:02:44,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:02:44,007 INFO L87 Difference]: Start difference. First operand 9217 states and 15222 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:44,636 INFO L93 Difference]: Finished difference Result 18511 states and 30504 transitions. [2023-12-16 03:02:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:02:44,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 827 [2023-12-16 03:02:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:44,659 INFO L225 Difference]: With dead ends: 18511 [2023-12-16 03:02:44,659 INFO L226 Difference]: Without dead ends: 9295 [2023-12-16 03:02:44,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:02:44,674 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 265 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:44,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1182 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:02:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9295 states. [2023-12-16 03:02:45,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9295 to 7619. [2023-12-16 03:02:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7619 states, 5826 states have (on average 1.5907998626845177) internal successors, (9268), 5842 states have internal predecessors, (9268), 1696 states have call successors, (1696), 96 states have call predecessors, (1696), 96 states have return successors, (1696), 1680 states have call predecessors, (1696), 1696 states have call successors, (1696) [2023-12-16 03:02:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7619 states to 7619 states and 12660 transitions. [2023-12-16 03:02:45,289 INFO L78 Accepts]: Start accepts. Automaton has 7619 states and 12660 transitions. Word has length 827 [2023-12-16 03:02:45,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:45,292 INFO L495 AbstractCegarLoop]: Abstraction has 7619 states and 12660 transitions. [2023-12-16 03:02:45,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:45,293 INFO L276 IsEmpty]: Start isEmpty. Operand 7619 states and 12660 transitions. [2023-12-16 03:02:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:45,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:45,304 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:45,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:45,513 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 [2023-12-16 03:02:45,513 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:45,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash 607081945, now seen corresponding path program 1 times [2023-12-16 03:02:45,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:45,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899083992] [2023-12-16 03:02:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:45,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:45,571 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:45,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458186941] [2023-12-16 03:02:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:45,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:45,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:45,572 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) [2023-12-16 03:02:45,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 03:02:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:46,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:02:46,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-12-16 03:02:46,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:46,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:46,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899083992] [2023-12-16 03:02:46,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:46,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458186941] [2023-12-16 03:02:46,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458186941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:46,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:46,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:02:46,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345326637] [2023-12-16 03:02:46,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:46,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:02:46,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:46,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:02:46,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:02:46,103 INFO L87 Difference]: Start difference. First operand 7619 states and 12660 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:46,880 INFO L93 Difference]: Finished difference Result 21775 states and 36180 transitions. [2023-12-16 03:02:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:02:46,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 827 [2023-12-16 03:02:46,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:46,944 INFO L225 Difference]: With dead ends: 21775 [2023-12-16 03:02:46,944 INFO L226 Difference]: Without dead ends: 14121 [2023-12-16 03:02:46,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:02:46,960 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 569 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:46,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1935 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:02:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14121 states. [2023-12-16 03:02:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14121 to 12525. [2023-12-16 03:02:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12525 states, 10012 states have (on average 1.604274870155813) internal successors, (16062), 10052 states have internal predecessors, (16062), 2392 states have call successors, (2392), 120 states have call predecessors, (2392), 120 states have return successors, (2392), 2352 states have call predecessors, (2392), 2392 states have call successors, (2392) [2023-12-16 03:02:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12525 states to 12525 states and 20846 transitions. [2023-12-16 03:02:47,844 INFO L78 Accepts]: Start accepts. Automaton has 12525 states and 20846 transitions. Word has length 827 [2023-12-16 03:02:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:47,845 INFO L495 AbstractCegarLoop]: Abstraction has 12525 states and 20846 transitions. [2023-12-16 03:02:47,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:47,845 INFO L276 IsEmpty]: Start isEmpty. Operand 12525 states and 20846 transitions. [2023-12-16 03:02:47,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-16 03:02:47,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:47,856 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:47,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-16 03:02:48,062 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 [2023-12-16 03:02:48,063 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:48,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:48,063 INFO L85 PathProgramCache]: Analyzing trace with hash -124885481, now seen corresponding path program 1 times [2023-12-16 03:02:48,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:48,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452977305] [2023-12-16 03:02:48,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:48,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:48,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:48,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891606404] [2023-12-16 03:02:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:48,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:48,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:48,136 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) [2023-12-16 03:02:48,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 03:02:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:48,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:02:48,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 15303 proven. 276 refuted. 0 times theorem prover too weak. 20065 trivial. 0 not checked. [2023-12-16 03:02:49,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:02:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 123 proven. 276 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-12-16 03:02:49,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:49,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452977305] [2023-12-16 03:02:49,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:49,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891606404] [2023-12-16 03:02:49,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891606404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:02:49,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:02:49,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:02:49,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866694739] [2023-12-16 03:02:49,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:02:49,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:02:49,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:02:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:02:49,660 INFO L87 Difference]: Start difference. First operand 12525 states and 20846 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (226), 2 states have call predecessors, (226), 4 states have return successors, (227), 2 states have call predecessors, (227), 2 states have call successors, (227) [2023-12-16 03:02:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:50,488 INFO L93 Difference]: Finished difference Result 16823 states and 27866 transitions. [2023-12-16 03:02:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:02:50,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (226), 2 states have call predecessors, (226), 4 states have return successors, (227), 2 states have call predecessors, (227), 2 states have call successors, (227) Word has length 827 [2023-12-16 03:02:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:50,499 INFO L225 Difference]: With dead ends: 16823 [2023-12-16 03:02:50,499 INFO L226 Difference]: Without dead ends: 4299 [2023-12-16 03:02:50,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1656 GetRequests, 1646 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:02:50,517 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 543 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:50,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1135 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 03:02:50,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2023-12-16 03:02:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 4154. [2023-12-16 03:02:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4154 states, 3111 states have (on average 1.5576984892317582) internal successors, (4846), 3125 states have internal predecessors, (4846), 988 states have call successors, (988), 54 states have call predecessors, (988), 54 states have return successors, (988), 974 states have call predecessors, (988), 988 states have call successors, (988) [2023-12-16 03:02:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 6822 transitions. [2023-12-16 03:02:50,965 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 6822 transitions. Word has length 827 [2023-12-16 03:02:50,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:50,966 INFO L495 AbstractCegarLoop]: Abstraction has 4154 states and 6822 transitions. [2023-12-16 03:02:50,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (226), 2 states have call predecessors, (226), 4 states have return successors, (227), 2 states have call predecessors, (227), 2 states have call successors, (227) [2023-12-16 03:02:50,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 6822 transitions. [2023-12-16 03:02:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2023-12-16 03:02:50,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:50,974 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:50,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 03:02:51,183 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 [2023-12-16 03:02:51,184 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:51,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:51,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1817763987, now seen corresponding path program 1 times [2023-12-16 03:02:51,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:51,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668196018] [2023-12-16 03:02:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:51,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:51,310 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:51,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573918052] [2023-12-16 03:02:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:51,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:51,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:51,313 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) [2023-12-16 03:02:51,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 03:02:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:51,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 03:02:51,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 7449 proven. 45 refuted. 0 times theorem prover too weak. 28150 trivial. 0 not checked. [2023-12-16 03:02:52,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:02:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 354 proven. 45 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-12-16 03:02:52,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:52,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668196018] [2023-12-16 03:02:52,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:52,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573918052] [2023-12-16 03:02:52,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573918052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:02:52,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:02:52,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-16 03:02:52,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216321425] [2023-12-16 03:02:52,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:02:52,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 03:02:52,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:52,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 03:02:52,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:02:52,708 INFO L87 Difference]: Start difference. First operand 4154 states and 6822 transitions. Second operand has 11 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-12-16 03:02:57,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:57,333 INFO L93 Difference]: Finished difference Result 18421 states and 29135 transitions. [2023-12-16 03:02:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-16 03:02:57,333 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) Word has length 828 [2023-12-16 03:02:57,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:57,389 INFO L225 Difference]: With dead ends: 18421 [2023-12-16 03:02:57,390 INFO L226 Difference]: Without dead ends: 13614 [2023-12-16 03:02:57,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1693 GetRequests, 1646 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=477, Invalid=1593, Unknown=0, NotChecked=0, Total=2070 [2023-12-16 03:02:57,400 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 1540 mSDsluCounter, 2460 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 1440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 4201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1440 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:57,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 3094 Invalid, 4201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1440 Valid, 2761 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 03:02:57,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13614 states. [2023-12-16 03:02:58,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13614 to 6719. [2023-12-16 03:02:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6719 states, 4706 states have (on average 1.4902252443688908) internal successors, (7013), 4738 states have internal predecessors, (7013), 1908 states have call successors, (1908), 104 states have call predecessors, (1908), 104 states have return successors, (1908), 1876 states have call predecessors, (1908), 1908 states have call successors, (1908) [2023-12-16 03:02:58,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6719 states to 6719 states and 10829 transitions. [2023-12-16 03:02:58,318 INFO L78 Accepts]: Start accepts. Automaton has 6719 states and 10829 transitions. Word has length 828 [2023-12-16 03:02:58,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:02:58,318 INFO L495 AbstractCegarLoop]: Abstraction has 6719 states and 10829 transitions. [2023-12-16 03:02:58,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-12-16 03:02:58,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6719 states and 10829 transitions. [2023-12-16 03:02:58,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2023-12-16 03:02:58,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:02:58,340 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:02:58,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-16 03:02:58,540 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 [2023-12-16 03:02:58,541 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:02:58,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:02:58,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1951777493, now seen corresponding path program 1 times [2023-12-16 03:02:58,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:02:58,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832234853] [2023-12-16 03:02:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:58,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:02:58,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:02:58,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434419989] [2023-12-16 03:02:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:02:58,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:02:58,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:02:58,590 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) [2023-12-16 03:02:58,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 03:02:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:02:59,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:02:59,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:02:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-12-16 03:02:59,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:02:59,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:02:59,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832234853] [2023-12-16 03:02:59,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:02:59,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434419989] [2023-12-16 03:02:59,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434419989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:02:59,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:02:59,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:02:59,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418518748] [2023-12-16 03:02:59,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:02:59,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:02:59,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:02:59,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:02:59,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:02:59,145 INFO L87 Difference]: Start difference. First operand 6719 states and 10829 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:02:59,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:02:59,745 INFO L93 Difference]: Finished difference Result 15805 states and 25703 transitions. [2023-12-16 03:02:59,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:02:59,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 828 [2023-12-16 03:02:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:02:59,762 INFO L225 Difference]: With dead ends: 15805 [2023-12-16 03:02:59,762 INFO L226 Difference]: Without dead ends: 9087 [2023-12-16 03:02:59,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:02:59,780 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 569 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:02:59,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1671 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:02:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9087 states. [2023-12-16 03:03:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9087 to 8353. [2023-12-16 03:03:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8353 states, 6256 states have (on average 1.545076726342711) internal successors, (9666), 6284 states have internal predecessors, (9666), 1976 states have call successors, (1976), 120 states have call predecessors, (1976), 120 states have return successors, (1976), 1948 states have call predecessors, (1976), 1976 states have call successors, (1976) [2023-12-16 03:03:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 13618 transitions. [2023-12-16 03:03:00,803 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 13618 transitions. Word has length 828 [2023-12-16 03:03:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:00,804 INFO L495 AbstractCegarLoop]: Abstraction has 8353 states and 13618 transitions. [2023-12-16 03:03:00,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-12-16 03:03:00,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 13618 transitions. [2023-12-16 03:03:00,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2023-12-16 03:03:00,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:00,815 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:00,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 03:03:01,026 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 [2023-12-16 03:03:01,027 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:01,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:01,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1525541353, now seen corresponding path program 1 times [2023-12-16 03:03:01,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:01,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004507995] [2023-12-16 03:03:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:01,130 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:01,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558782233] [2023-12-16 03:03:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:01,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:01,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:01,156 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) [2023-12-16 03:03:01,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 03:03:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:01,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 03:03:01,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 9697 proven. 666 refuted. 0 times theorem prover too weak. 25281 trivial. 0 not checked. [2023-12-16 03:03:05,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:03:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 126 proven. 669 refuted. 0 times theorem prover too weak. 34849 trivial. 0 not checked. [2023-12-16 03:03:05,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:05,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004507995] [2023-12-16 03:03:05,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:05,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558782233] [2023-12-16 03:03:05,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558782233] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:03:05,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:03:05,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-16 03:03:05,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980940799] [2023-12-16 03:03:05,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:03:05,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 03:03:05,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 03:03:05,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-12-16 03:03:05,709 INFO L87 Difference]: Start difference. First operand 8353 states and 13618 transitions. Second operand has 20 states, 19 states have (on average 17.526315789473685) internal successors, (333), 18 states have internal predecessors, (333), 6 states have call successors, (268), 4 states have call predecessors, (268), 7 states have return successors, (268), 6 states have call predecessors, (268), 6 states have call successors, (268) Received shutdown request... [2023-12-16 03:03:15,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-16 03:03:15,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1723 GetRequests, 1650 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1640, Invalid=3910, Unknown=0, NotChecked=0, Total=5550 [2023-12-16 03:03:15,571 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 2115 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 4485 mSolverCounterSat, 2352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 6837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2352 IncrementalHoareTripleChecker+Valid, 4485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:15,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2138 Valid, 2972 Invalid, 6837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2352 Valid, 4485 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-16 03:03:15,572 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 03:03:15,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 03:03:15,610 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:03:15,610 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 [2023-12-16 03:03:15,784 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 [2023-12-16 03:03:15,785 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (8353states) and FLOYD_HOARE automaton (currently 65 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (28209 states constructed, input type IntersectNwa). [2023-12-16 03:03:15,808 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:15,810 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 03:03:15,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:03:15 BoogieIcfgContainer [2023-12-16 03:03:15,811 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 03:03:15,812 INFO L158 Benchmark]: Toolchain (without parser) took 64577.76ms. Allocated memory was 273.7MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 233.6MB in the beginning and 1.2GB in the end (delta: -990.1MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-16 03:03:15,812 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 130.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 03:03:15,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.91ms. Allocated memory is still 273.7MB. Free memory was 233.6MB in the beginning and 201.1MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-16 03:03:15,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.94ms. Allocated memory is still 273.7MB. Free memory was 201.1MB in the beginning and 189.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 03:03:15,812 INFO L158 Benchmark]: Boogie Preprocessor took 122.60ms. Allocated memory is still 273.7MB. Free memory was 189.5MB in the beginning and 174.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 03:03:15,812 INFO L158 Benchmark]: RCFGBuilder took 957.37ms. Allocated memory is still 273.7MB. Free memory was 174.9MB in the beginning and 154.1MB in the end (delta: 20.8MB). Peak memory consumption was 21.3MB. Max. memory is 8.0GB. [2023-12-16 03:03:15,813 INFO L158 Benchmark]: TraceAbstraction took 62934.55ms. Allocated memory was 273.7MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 153.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-16 03:03:15,813 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 130.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 481.91ms. Allocated memory is still 273.7MB. Free memory was 233.6MB in the beginning and 201.1MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.94ms. Allocated memory is still 273.7MB. Free memory was 201.1MB in the beginning and 189.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 122.60ms. Allocated memory is still 273.7MB. Free memory was 189.5MB in the beginning and 174.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * RCFGBuilder took 957.37ms. Allocated memory is still 273.7MB. Free memory was 174.9MB in the beginning and 154.1MB in the end (delta: 20.8MB). Peak memory consumption was 21.3MB. Max. memory is 8.0GB. * TraceAbstraction took 62934.55ms. Allocated memory was 273.7MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 153.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.3GB. 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 constructing difference of abstraction (8353states) and FLOYD_HOARE automaton (currently 65 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (28209 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 348 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.9s, OverallIterations: 18, TraceHistogramMax: 134, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 26.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14478 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13969 mSDsluCounter, 30276 SdHoareTripleChecker+Invalid, 10.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17885 mSDsCounter, 5295 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12289 IncrementalHoareTripleChecker+Invalid, 17584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5295 mSolverCounterUnsat, 12391 mSDtfsCounter, 12289 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20790 GetRequests, 20598 SyntacticMatches, 8 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2620 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16709occurred in iteration=10, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.7s AutomataMinimizationTime, 17 MinimizatonAttempts, 22932 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 4.1s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 15713 NumberOfCodeBlocks, 15713 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 20653 ConstructedInterpolants, 0 QuantifiedInterpolants, 48955 SizeOfPredicates, 38 NumberOfNonLiveVariables, 33124 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 887875/891100 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