/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-23.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:17:49,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:17:49,590 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:17:49,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:17:49,593 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:17:49,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:17:49,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:17:49,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:17:49,624 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:17:49,628 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:17:49,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:17:49,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:17:49,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:17:49,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:17:49,630 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:17:49,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:17:49,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:17:49,631 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:17:49,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:17:49,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:17:49,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:17:49,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:17:49,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:17:49,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:17:49,632 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:17:49,632 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:17:49,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:17:49,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:17:49,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:17:49,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:17:49,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:17:49,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:17:49,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:17:49,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:17:49,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:17:49,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:17:49,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:17:49,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:17:49,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:17:49,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:17:49,635 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:17:49,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:17:49,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:17:49,635 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:17:49,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:17:49,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:17:49,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:17:49,830 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:17:49,831 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:17:49,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-23.i [2023-12-15 21:17:50,854 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:17:51,104 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:17:51,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-23.i [2023-12-15 21:17:51,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0096d03/8cdbc940b0304bc6945771ef45d4c465/FLAGc31157db5 [2023-12-15 21:17:51,127 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0096d03/8cdbc940b0304bc6945771ef45d4c465 [2023-12-15 21:17:51,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:17:51,130 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:17:51,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:17:51,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:17:51,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:17:51,135 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3569d5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51, skipping insertion in model container [2023-12-15 21:17:51,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,175 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:17:51,274 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-23.i[916,929] [2023-12-15 21:17:51,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:17:51,481 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:17:51,491 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-23.i[916,929] [2023-12-15 21:17:51,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:17:51,579 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:17:51,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51 WrapperNode [2023-12-15 21:17:51,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:17:51,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:17:51,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:17:51,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:17:51,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,644 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 762 [2023-12-15 21:17:51,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:17:51,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:17:51,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:17:51,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:17:51,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,673 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,709 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:17:51,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:17:51,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:17:51,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:17:51,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:17:51,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (1/1) ... [2023-12-15 21:17:51,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:17:51,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:51,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:17:51,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:17:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:17:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:17:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:17:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:17:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:17:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:17:51,936 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:17:51,937 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:17:52,721 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:17:52,771 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:17:52,772 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:17:52,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:17:52 BoogieIcfgContainer [2023-12-15 21:17:52,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:17:52,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:17:52,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:17:52,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:17:52,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:17:51" (1/3) ... [2023-12-15 21:17:52,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cfbb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:17:52, skipping insertion in model container [2023-12-15 21:17:52,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:51" (2/3) ... [2023-12-15 21:17:52,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cfbb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:17:52, skipping insertion in model container [2023-12-15 21:17:52,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:17:52" (3/3) ... [2023-12-15 21:17:52,778 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-23.i [2023-12-15 21:17:52,789 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:17:52,789 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:17:52,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:17:52,829 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;@374a608e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:17:52,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:17:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 206 states have (on average 1.5825242718446602) internal successors, (326), 207 states have internal predecessors, (326), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-12-15 21:17:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:17:52,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:52,868 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:52,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:52,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1198472077, now seen corresponding path program 1 times [2023-12-15 21:17:52,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:52,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608379801] [2023-12-15 21:17:52,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:52,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:53,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:53,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608379801] [2023-12-15 21:17:53,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:17:53,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633709690] [2023-12-15 21:17:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:53,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:53,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:53,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:53,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:17:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:53,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:17:53,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2023-12-15 21:17:53,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:53,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633709690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:53,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:53,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:17:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335828643] [2023-12-15 21:17:53,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:53,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:17:53,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:53,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:17:53,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:17:53,762 INFO L87 Difference]: Start difference. First operand has 286 states, 206 states have (on average 1.5825242718446602) internal successors, (326), 207 states have internal predecessors, (326), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-15 21:17:53,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:53,820 INFO L93 Difference]: Finished difference Result 569 states and 1035 transitions. [2023-12-15 21:17:53,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:17:53,823 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 526 [2023-12-15 21:17:53,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:53,831 INFO L225 Difference]: With dead ends: 569 [2023-12-15 21:17:53,832 INFO L226 Difference]: Without dead ends: 284 [2023-12-15 21:17:53,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:17:53,850 INFO L413 NwaCegarLoop]: 470 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, 470 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:53,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-15 21:17:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-12-15 21:17:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 205 states have (on average 1.5560975609756098) internal successors, (319), 205 states have internal predecessors, (319), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-12-15 21:17:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 473 transitions. [2023-12-15 21:17:53,929 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 473 transitions. Word has length 526 [2023-12-15 21:17:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:53,929 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 473 transitions. [2023-12-15 21:17:53,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-15 21:17:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 473 transitions. [2023-12-15 21:17:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:17:53,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:53,940 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:53,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:54,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:17:54,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:54,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:54,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1305397979, now seen corresponding path program 1 times [2023-12-15 21:17:54,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:54,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833185984] [2023-12-15 21:17:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:54,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:54,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:54,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427975889] [2023-12-15 21:17:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:54,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:54,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:54,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:54,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:17:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:54,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:17:54,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 1168 proven. 0 refuted. 0 times theorem prover too weak. 10536 trivial. 0 not checked. [2023-12-15 21:17:55,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:55,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:55,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833185984] [2023-12-15 21:17:55,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:55,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427975889] [2023-12-15 21:17:55,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427975889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:55,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:55,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:17:55,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006062101] [2023-12-15 21:17:55,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:55,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:17:55,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:55,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:17:55,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:55,107 INFO L87 Difference]: Start difference. First operand 284 states and 473 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-15 21:17:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:55,373 INFO L93 Difference]: Finished difference Result 566 states and 943 transitions. [2023-12-15 21:17:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:17:55,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 526 [2023-12-15 21:17:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:55,377 INFO L225 Difference]: With dead ends: 566 [2023-12-15 21:17:55,377 INFO L226 Difference]: Without dead ends: 283 [2023-12-15 21:17:55,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:55,379 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 492 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:55,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 510 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:17:55,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-15 21:17:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-12-15 21:17:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 204 states have (on average 1.5490196078431373) internal successors, (316), 204 states have internal predecessors, (316), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-12-15 21:17:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 470 transitions. [2023-12-15 21:17:55,412 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 470 transitions. Word has length 526 [2023-12-15 21:17:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:55,414 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 470 transitions. [2023-12-15 21:17:55,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-15 21:17:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 470 transitions. [2023-12-15 21:17:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:17:55,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:55,420 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:55,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:55,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:17:55,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:55,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1478167133, now seen corresponding path program 1 times [2023-12-15 21:17:55,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:55,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872440054] [2023-12-15 21:17:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:55,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:55,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:55,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030664190] [2023-12-15 21:17:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:55,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:55,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:55,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:55,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:17:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:56,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:17:56,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:56,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:56,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872440054] [2023-12-15 21:17:56,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030664190] [2023-12-15 21:17:56,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030664190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:56,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:56,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:56,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751950796] [2023-12-15 21:17:56,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:56,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:17:56,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:56,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:17:56,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:56,088 INFO L87 Difference]: Start difference. First operand 283 states and 470 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:56,144 INFO L93 Difference]: Finished difference Result 847 states and 1408 transitions. [2023-12-15 21:17:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:17:56,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 526 [2023-12-15 21:17:56,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:56,148 INFO L225 Difference]: With dead ends: 847 [2023-12-15 21:17:56,148 INFO L226 Difference]: Without dead ends: 565 [2023-12-15 21:17:56,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:56,149 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 461 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:56,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 920 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-12-15 21:17:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2023-12-15 21:17:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 406 states have (on average 1.5443349753694582) internal successors, (627), 406 states have internal predecessors, (627), 154 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:17:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 935 transitions. [2023-12-15 21:17:56,192 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 935 transitions. Word has length 526 [2023-12-15 21:17:56,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:56,193 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 935 transitions. [2023-12-15 21:17:56,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 935 transitions. [2023-12-15 21:17:56,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:17:56,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:56,196 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:56,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 21:17:56,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:56,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:56,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash 602148127, now seen corresponding path program 1 times [2023-12-15 21:17:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:56,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469627287] [2023-12-15 21:17:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:56,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:56,472 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:56,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112386074] [2023-12-15 21:17:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:56,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:56,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:56,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:56,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:17:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:56,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:17:56,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:56,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:56,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:56,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469627287] [2023-12-15 21:17:56,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:56,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112386074] [2023-12-15 21:17:56,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112386074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:56,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:56,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:56,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573778022] [2023-12-15 21:17:56,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:56,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:17:56,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:17:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:56,797 INFO L87 Difference]: Start difference. First operand 563 states and 935 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:56,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:56,882 INFO L93 Difference]: Finished difference Result 1422 states and 2363 transitions. [2023-12-15 21:17:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:17:56,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 526 [2023-12-15 21:17:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:56,887 INFO L225 Difference]: With dead ends: 1422 [2023-12-15 21:17:56,887 INFO L226 Difference]: Without dead ends: 860 [2023-12-15 21:17:56,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:56,889 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 463 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:56,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 948 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:56,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-12-15 21:17:56,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 605. [2023-12-15 21:17:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 448 states have (on average 1.5558035714285714) internal successors, (697), 448 states have internal predecessors, (697), 154 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:17:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 1005 transitions. [2023-12-15 21:17:56,929 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 1005 transitions. Word has length 526 [2023-12-15 21:17:56,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:56,929 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 1005 transitions. [2023-12-15 21:17:56,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:56,930 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 1005 transitions. [2023-12-15 21:17:56,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:17:56,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:56,933 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:56,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 21:17:57,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:57,141 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:57,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:57,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1023592993, now seen corresponding path program 1 times [2023-12-15 21:17:57,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:57,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567532194] [2023-12-15 21:17:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:57,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:57,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:57,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118007838] [2023-12-15 21:17:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:57,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:57,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:57,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:57,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:17:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:57,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:17:57,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:57,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:57,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:57,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567532194] [2023-12-15 21:17:57,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:57,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118007838] [2023-12-15 21:17:57,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118007838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:57,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:57,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:57,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521686022] [2023-12-15 21:17:57,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:57,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:17:57,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:57,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:17:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:57,593 INFO L87 Difference]: Start difference. First operand 605 states and 1005 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:57,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:57,686 INFO L93 Difference]: Finished difference Result 1799 states and 2988 transitions. [2023-12-15 21:17:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:17:57,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 526 [2023-12-15 21:17:57,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:57,692 INFO L225 Difference]: With dead ends: 1799 [2023-12-15 21:17:57,692 INFO L226 Difference]: Without dead ends: 1195 [2023-12-15 21:17:57,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:57,694 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 448 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:57,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1324 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:57,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2023-12-15 21:17:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 787. [2023-12-15 21:17:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 630 states have (on average 1.5952380952380953) internal successors, (1005), 630 states have internal predecessors, (1005), 154 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:17:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1313 transitions. [2023-12-15 21:17:57,758 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1313 transitions. Word has length 526 [2023-12-15 21:17:57,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:57,759 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 1313 transitions. [2023-12-15 21:17:57,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1313 transitions. [2023-12-15 21:17:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 21:17:57,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:57,762 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:57,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:57,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:57,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:57,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:57,971 INFO L85 PathProgramCache]: Analyzing trace with hash 363192417, now seen corresponding path program 1 times [2023-12-15 21:17:57,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:57,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005932693] [2023-12-15 21:17:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:57,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:58,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:58,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635410896] [2023-12-15 21:17:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:58,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:58,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:58,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:58,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:17:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:58,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:17:58,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5898 proven. 105 refuted. 0 times theorem prover too weak. 5701 trivial. 0 not checked. [2023-12-15 21:17:58,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:59,014 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 123 proven. 105 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2023-12-15 21:17:59,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:59,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005932693] [2023-12-15 21:17:59,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:59,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635410896] [2023-12-15 21:17:59,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635410896] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:59,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:59,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 21:17:59,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082884240] [2023-12-15 21:17:59,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:59,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:17:59,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:59,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:17:59,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:17:59,017 INFO L87 Difference]: Start difference. First operand 787 states and 1313 transitions. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 3 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 3 states have call predecessors, (113), 3 states have call successors, (113) [2023-12-15 21:17:59,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:59,418 INFO L93 Difference]: Finished difference Result 1585 states and 2635 transitions. [2023-12-15 21:17:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:17:59,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 3 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 3 states have call predecessors, (113), 3 states have call successors, (113) Word has length 526 [2023-12-15 21:17:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:59,422 INFO L225 Difference]: With dead ends: 1585 [2023-12-15 21:17:59,422 INFO L226 Difference]: Without dead ends: 799 [2023-12-15 21:17:59,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 1044 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:17:59,424 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 290 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:59,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 938 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:17:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-15 21:17:59,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 795. [2023-12-15 21:17:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 636 states have (on average 1.5770440251572326) internal successors, (1003), 636 states have internal predecessors, (1003), 154 states have call successors, (154), 4 states have call predecessors, (154), 4 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:17:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1311 transitions. [2023-12-15 21:17:59,481 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1311 transitions. Word has length 526 [2023-12-15 21:17:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:59,482 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1311 transitions. [2023-12-15 21:17:59,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 3 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 3 states have call predecessors, (113), 3 states have call successors, (113) [2023-12-15 21:17:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1311 transitions. [2023-12-15 21:17:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-15 21:17:59,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:59,485 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:59,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:59,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:59,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:59,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:59,693 INFO L85 PathProgramCache]: Analyzing trace with hash 781823284, now seen corresponding path program 1 times [2023-12-15 21:17:59,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:59,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322452271] [2023-12-15 21:17:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:59,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:59,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:59,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658031504] [2023-12-15 21:17:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:59,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:59,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:59,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:59,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:18:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:00,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:18:00,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5838 proven. 99 refuted. 0 times theorem prover too weak. 5767 trivial. 0 not checked. [2023-12-15 21:18:00,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:18:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 129 proven. 99 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2023-12-15 21:18:00,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:00,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322452271] [2023-12-15 21:18:00,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:18:00,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658031504] [2023-12-15 21:18:00,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658031504] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:18:00,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:18:00,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 21:18:00,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77129659] [2023-12-15 21:18:00,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:18:00,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:18:00,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:00,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:18:00,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:18:00,711 INFO L87 Difference]: Start difference. First operand 795 states and 1311 transitions. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 3 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 3 states have call predecessors, (111), 3 states have call successors, (111) [2023-12-15 21:18:01,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:01,103 INFO L93 Difference]: Finished difference Result 1601 states and 2631 transitions. [2023-12-15 21:18:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:18:01,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 3 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 3 states have call predecessors, (111), 3 states have call successors, (111) Word has length 527 [2023-12-15 21:18:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:01,110 INFO L225 Difference]: With dead ends: 1601 [2023-12-15 21:18:01,110 INFO L226 Difference]: Without dead ends: 807 [2023-12-15 21:18:01,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:18:01,114 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 286 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:18:01,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 970 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:18:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-12-15 21:18:01,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 803. [2023-12-15 21:18:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 642 states have (on average 1.5623052959501558) internal successors, (1003), 642 states have internal predecessors, (1003), 154 states have call successors, (154), 6 states have call predecessors, (154), 6 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:18:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1311 transitions. [2023-12-15 21:18:01,162 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1311 transitions. Word has length 527 [2023-12-15 21:18:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:18:01,163 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1311 transitions. [2023-12-15 21:18:01,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 3 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 3 states have call predecessors, (111), 3 states have call successors, (111) [2023-12-15 21:18:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1311 transitions. [2023-12-15 21:18:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-15 21:18:01,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:01,166 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:18:01,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:18:01,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:01,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:01,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:01,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1704093367, now seen corresponding path program 1 times [2023-12-15 21:18:01,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:01,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518846855] [2023-12-15 21:18:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:01,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:01,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:18:01,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157664153] [2023-12-15 21:18:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:01,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:01,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:01,436 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:18:01,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:18:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:01,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:18:01,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5928 proven. 114 refuted. 0 times theorem prover too weak. 5662 trivial. 0 not checked. [2023-12-15 21:18:02,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:18:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 114 proven. 114 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2023-12-15 21:18:02,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:02,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518846855] [2023-12-15 21:18:02,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:18:02,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157664153] [2023-12-15 21:18:02,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157664153] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:18:02,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:18:02,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:18:02,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578838033] [2023-12-15 21:18:02,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:18:02,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:18:02,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:02,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:18:02,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:18:02,237 INFO L87 Difference]: Start difference. First operand 803 states and 1311 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-12-15 21:18:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:02,675 INFO L93 Difference]: Finished difference Result 1621 states and 2635 transitions. [2023-12-15 21:18:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:18:02,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 528 [2023-12-15 21:18:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:02,679 INFO L225 Difference]: With dead ends: 1621 [2023-12-15 21:18:02,679 INFO L226 Difference]: Without dead ends: 819 [2023-12-15 21:18:02,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 1048 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:18:02,681 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 881 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:18:02,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 982 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:18:02,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2023-12-15 21:18:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2023-12-15 21:18:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 648 states have (on average 1.5540123456790123) internal successors, (1007), 648 states have internal predecessors, (1007), 154 states have call successors, (154), 8 states have call predecessors, (154), 8 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:18:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1315 transitions. [2023-12-15 21:18:02,728 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1315 transitions. Word has length 528 [2023-12-15 21:18:02,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:18:02,729 INFO L495 AbstractCegarLoop]: Abstraction has 811 states and 1315 transitions. [2023-12-15 21:18:02,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-12-15 21:18:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1315 transitions. [2023-12-15 21:18:02,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-15 21:18:02,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:02,732 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:18:02,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 21:18:02,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:18:02,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:02,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:02,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1675593077, now seen corresponding path program 1 times [2023-12-15 21:18:02,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:02,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834778904] [2023-12-15 21:18:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:02,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:02,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:18:02,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947364315] [2023-12-15 21:18:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:02,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:02,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:02,995 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:18:02,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:18:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:03,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:18:03,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5718 proven. 135 refuted. 0 times theorem prover too weak. 5851 trivial. 0 not checked. [2023-12-15 21:18:03,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:18:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 93 proven. 135 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2023-12-15 21:18:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834778904] [2023-12-15 21:18:03,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:18:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947364315] [2023-12-15 21:18:03,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947364315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:18:03,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:18:03,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:18:03,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111951027] [2023-12-15 21:18:03,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:18:03,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:18:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:18:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:18:03,898 INFO L87 Difference]: Start difference. First operand 811 states and 1315 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-15 21:18:04,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:04,436 INFO L93 Difference]: Finished difference Result 1637 states and 2639 transitions. [2023-12-15 21:18:04,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:18:04,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 528 [2023-12-15 21:18:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:04,441 INFO L225 Difference]: With dead ends: 1637 [2023-12-15 21:18:04,441 INFO L226 Difference]: Without dead ends: 827 [2023-12-15 21:18:04,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 1048 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:18:04,444 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 800 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:18:04,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 943 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:18:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-12-15 21:18:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 815. [2023-12-15 21:18:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 650 states have (on average 1.5369230769230768) internal successors, (999), 650 states have internal predecessors, (999), 154 states have call successors, (154), 10 states have call predecessors, (154), 10 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:18:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1307 transitions. [2023-12-15 21:18:04,491 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1307 transitions. Word has length 528 [2023-12-15 21:18:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:18:04,492 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1307 transitions. [2023-12-15 21:18:04,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-15 21:18:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1307 transitions. [2023-12-15 21:18:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-15 21:18:04,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:04,495 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:18:04,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:18:04,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:04,703 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:04,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash -401743821, now seen corresponding path program 1 times [2023-12-15 21:18:04,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:04,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468198030] [2023-12-15 21:18:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:04,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:04,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:18:04,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301132331] [2023-12-15 21:18:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:04,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:04,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:04,772 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:18:04,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:18:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:05,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:18:05,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:18:05,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:18:05,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:05,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468198030] [2023-12-15 21:18:05,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:18:05,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301132331] [2023-12-15 21:18:05,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301132331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:18:05,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:18:05,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:18:05,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713950299] [2023-12-15 21:18:05,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:18:05,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:18:05,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:05,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:18:05,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:18:05,578 INFO L87 Difference]: Start difference. First operand 815 states and 1307 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:18:05,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:05,955 INFO L93 Difference]: Finished difference Result 2287 states and 3678 transitions. [2023-12-15 21:18:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:18:05,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 528 [2023-12-15 21:18:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:05,961 INFO L225 Difference]: With dead ends: 2287 [2023-12-15 21:18:05,962 INFO L226 Difference]: Without dead ends: 1450 [2023-12-15 21:18:05,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:18:05,963 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 698 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:18:05,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 2278 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:18:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-12-15 21:18:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 968. [2023-12-15 21:18:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 721 states have (on average 1.49375866851595) internal successors, (1077), 721 states have internal predecessors, (1077), 231 states have call successors, (231), 15 states have call predecessors, (231), 15 states have return successors, (231), 231 states have call predecessors, (231), 231 states have call successors, (231) [2023-12-15 21:18:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1539 transitions. [2023-12-15 21:18:06,066 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1539 transitions. Word has length 528 [2023-12-15 21:18:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:18:06,066 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1539 transitions. [2023-12-15 21:18:06,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:18:06,067 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1539 transitions. [2023-12-15 21:18:06,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-15 21:18:06,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:06,070 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:18:06,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:18:06,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:18:06,278 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:06,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1082565251, now seen corresponding path program 1 times [2023-12-15 21:18:06,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:06,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168906603] [2023-12-15 21:18:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:06,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:06,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:18:06,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898949851] [2023-12-15 21:18:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:06,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:06,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:06,346 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:18:06,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:18:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:06,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:18:06,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:18:06,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:18:06,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:06,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168906603] [2023-12-15 21:18:06,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:18:06,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898949851] [2023-12-15 21:18:06,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898949851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:18:06,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:18:06,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:18:06,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142070242] [2023-12-15 21:18:06,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:18:06,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:18:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:18:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:18:06,732 INFO L87 Difference]: Start difference. First operand 968 states and 1539 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:18:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:06,923 INFO L93 Difference]: Finished difference Result 2382 states and 3827 transitions. [2023-12-15 21:18:06,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:18:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 529 [2023-12-15 21:18:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:06,944 INFO L225 Difference]: With dead ends: 2382 [2023-12-15 21:18:06,944 INFO L226 Difference]: Without dead ends: 1568 [2023-12-15 21:18:06,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:18:06,946 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 303 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:18:06,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1169 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:18:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-12-15 21:18:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2023-12-15 21:18:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1259 states have (on average 1.5424940428911835) internal successors, (1942), 1261 states have internal predecessors, (1942), 287 states have call successors, (287), 17 states have call predecessors, (287), 17 states have return successors, (287), 285 states have call predecessors, (287), 287 states have call successors, (287) [2023-12-15 21:18:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2516 transitions. [2023-12-15 21:18:07,113 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2516 transitions. Word has length 529 [2023-12-15 21:18:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:18:07,113 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 2516 transitions. [2023-12-15 21:18:07,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:18:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2516 transitions. [2023-12-15 21:18:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-15 21:18:07,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:07,117 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:18:07,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:18:07,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:18:07,346 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:07,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash 311831685, now seen corresponding path program 1 times [2023-12-15 21:18:07,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:07,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852053735] [2023-12-15 21:18:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:07,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:07,442 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:18:07,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110179148] [2023-12-15 21:18:07,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:07,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:07,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:07,454 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:18:07,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:18:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:07,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:18:07,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:18:08,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:18:08,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:08,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852053735] [2023-12-15 21:18:08,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:18:08,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110179148] [2023-12-15 21:18:08,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110179148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:18:08,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:18:08,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:18:08,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926639036] [2023-12-15 21:18:08,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:18:08,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:18:08,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:08,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:18:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:18:08,353 INFO L87 Difference]: Start difference. First operand 1564 states and 2516 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:18:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:09,424 INFO L93 Difference]: Finished difference Result 9301 states and 15148 transitions. [2023-12-15 21:18:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:18:09,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 529 [2023-12-15 21:18:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:09,448 INFO L225 Difference]: With dead ends: 9301 [2023-12-15 21:18:09,449 INFO L226 Difference]: Without dead ends: 7891 [2023-12-15 21:18:09,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:18:09,454 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 3453 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3453 SdHoareTripleChecker+Valid, 3389 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:18:09,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3453 Valid, 3389 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:18:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2023-12-15 21:18:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 4683. [2023-12-15 21:18:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4683 states, 3814 states have (on average 1.5406397482957526) internal successors, (5876), 3824 states have internal predecessors, (5876), 823 states have call successors, (823), 45 states have call predecessors, (823), 45 states have return successors, (823), 813 states have call predecessors, (823), 823 states have call successors, (823) [2023-12-15 21:18:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 7522 transitions. [2023-12-15 21:18:09,770 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 7522 transitions. Word has length 529 [2023-12-15 21:18:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:18:09,770 INFO L495 AbstractCegarLoop]: Abstraction has 4683 states and 7522 transitions. [2023-12-15 21:18:09,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:18:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 7522 transitions. [2023-12-15 21:18:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-15 21:18:09,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:09,776 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:18:09,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:18:09,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:18:09,984 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:09,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash -709236669, now seen corresponding path program 1 times [2023-12-15 21:18:09,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:09,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870589212] [2023-12-15 21:18:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:09,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:10,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:18:10,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341819519] [2023-12-15 21:18:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:10,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:10,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:10,057 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:18:10,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:18:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:10,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:18:10,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4206 proven. 51 refuted. 0 times theorem prover too weak. 7447 trivial. 0 not checked. [2023-12-15 21:18:10,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:18:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 177 proven. 51 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2023-12-15 21:18:10,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:10,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870589212] [2023-12-15 21:18:10,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:18:10,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341819519] [2023-12-15 21:18:10,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341819519] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:18:10,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:18:10,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 21:18:10,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097386099] [2023-12-15 21:18:10,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:18:10,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:18:10,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:10,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:18:10,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:18:10,938 INFO L87 Difference]: Start difference. First operand 4683 states and 7522 transitions. Second operand has 12 states, 12 states have (on average 20.583333333333332) internal successors, (247), 12 states have internal predecessors, (247), 3 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-15 21:18:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:12,909 INFO L93 Difference]: Finished difference Result 15745 states and 24990 transitions. [2023-12-15 21:18:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-15 21:18:12,910 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.583333333333332) internal successors, (247), 12 states have internal predecessors, (247), 3 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) Word has length 529 [2023-12-15 21:18:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:12,947 INFO L225 Difference]: With dead ends: 15745 [2023-12-15 21:18:12,947 INFO L226 Difference]: Without dead ends: 11221 [2023-12-15 21:18:12,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1076 GetRequests, 1048 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=625, Unknown=0, NotChecked=0, Total=870 [2023-12-15 21:18:12,958 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 2173 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:18:12,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2234 Valid, 1706 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 21:18:12,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11221 states. [2023-12-15 21:18:13,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11221 to 7459. [2023-12-15 21:18:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7459 states, 6583 states have (on average 1.5805863588029774) internal successors, (10405), 6593 states have internal predecessors, (10405), 823 states have call successors, (823), 52 states have call predecessors, (823), 52 states have return successors, (823), 813 states have call predecessors, (823), 823 states have call successors, (823) [2023-12-15 21:18:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7459 states to 7459 states and 12051 transitions. [2023-12-15 21:18:13,473 INFO L78 Accepts]: Start accepts. Automaton has 7459 states and 12051 transitions. Word has length 529 [2023-12-15 21:18:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:18:13,473 INFO L495 AbstractCegarLoop]: Abstraction has 7459 states and 12051 transitions. [2023-12-15 21:18:13,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.583333333333332) internal successors, (247), 12 states have internal predecessors, (247), 3 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-15 21:18:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 7459 states and 12051 transitions. [2023-12-15 21:18:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-15 21:18:13,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:13,482 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:18:13,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:18:13,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:18:13,690 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:13,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:13,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1526885119, now seen corresponding path program 1 times [2023-12-15 21:18:13,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:13,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29524585] [2023-12-15 21:18:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:13,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:13,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:18:13,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225632947] [2023-12-15 21:18:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:13,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:13,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:13,757 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:18:13,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:18:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:14,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 21:18:14,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 8233 proven. 375 refuted. 0 times theorem prover too weak. 3096 trivial. 0 not checked. [2023-12-15 21:18:16,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:18:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 291 proven. 384 refuted. 0 times theorem prover too weak. 11029 trivial. 0 not checked. [2023-12-15 21:18:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29524585] [2023-12-15 21:18:16,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:18:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225632947] [2023-12-15 21:18:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225632947] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:18:16,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:18:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-15 21:18:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482177204] [2023-12-15 21:18:16,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:18:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-15 21:18:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-15 21:18:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:18:16,670 INFO L87 Difference]: Start difference. First operand 7459 states and 12051 transitions. Second operand has 26 states, 26 states have (on average 10.384615384615385) internal successors, (270), 26 states have internal predecessors, (270), 9 states have call successors, (150), 5 states have call predecessors, (150), 11 states have return successors, (150), 9 states have call predecessors, (150), 9 states have call successors, (150) [2023-12-15 21:18:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:18,580 INFO L93 Difference]: Finished difference Result 15060 states and 24118 transitions. [2023-12-15 21:18:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-15 21:18:18,581 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.384615384615385) internal successors, (270), 26 states have internal predecessors, (270), 9 states have call successors, (150), 5 states have call predecessors, (150), 11 states have return successors, (150), 9 states have call predecessors, (150), 9 states have call successors, (150) Word has length 529 [2023-12-15 21:18:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:18,597 INFO L225 Difference]: With dead ends: 15060 [2023-12-15 21:18:18,597 INFO L226 Difference]: Without dead ends: 7759 [2023-12-15 21:18:18,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=552, Invalid=1170, Unknown=0, NotChecked=0, Total=1722 [2023-12-15 21:18:18,604 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1349 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:18:18,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 1583 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 21:18:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7759 states. [2023-12-15 21:18:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7759 to 7651. [2023-12-15 21:18:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7651 states, 6727 states have (on average 1.5570090679351865) internal successors, (10474), 6737 states have internal predecessors, (10474), 823 states have call successors, (823), 100 states have call predecessors, (823), 100 states have return successors, (823), 813 states have call predecessors, (823), 823 states have call successors, (823) [2023-12-15 21:18:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7651 states to 7651 states and 12120 transitions. [2023-12-15 21:18:18,935 INFO L78 Accepts]: Start accepts. Automaton has 7651 states and 12120 transitions. Word has length 529 [2023-12-15 21:18:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:18:18,936 INFO L495 AbstractCegarLoop]: Abstraction has 7651 states and 12120 transitions. [2023-12-15 21:18:18,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.384615384615385) internal successors, (270), 26 states have internal predecessors, (270), 9 states have call successors, (150), 5 states have call predecessors, (150), 11 states have return successors, (150), 9 states have call predecessors, (150), 9 states have call successors, (150) [2023-12-15 21:18:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 7651 states and 12120 transitions. [2023-12-15 21:18:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-15 21:18:18,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:18,944 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:18:18,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:18:19,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:19,152 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:19,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1511366401, now seen corresponding path program 1 times [2023-12-15 21:18:19,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:19,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882103977] [2023-12-15 21:18:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:19,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:18:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875917075] [2023-12-15 21:18:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:19,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:19,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:19,206 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:18:19,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:18:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:19,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:18:19,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:18:20,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:18:20,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882103977] [2023-12-15 21:18:20,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:18:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875917075] [2023-12-15 21:18:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875917075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:18:20,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:18:20,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:18:20,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909452001] [2023-12-15 21:18:20,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:18:20,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:18:20,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:18:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:18:20,198 INFO L87 Difference]: Start difference. First operand 7651 states and 12120 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:18:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:21,323 INFO L93 Difference]: Finished difference Result 25919 states and 40875 transitions. [2023-12-15 21:18:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:18:21,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 529 [2023-12-15 21:18:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:21,368 INFO L225 Difference]: With dead ends: 25919 [2023-12-15 21:18:21,369 INFO L226 Difference]: Without dead ends: 18447 [2023-12-15 21:18:21,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:18:21,382 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 968 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:18:21,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 2296 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:18:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18447 states. [2023-12-15 21:18:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18447 to 16465. [2023-12-15 21:18:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16465 states, 14705 states have (on average 1.5559333560013602) internal successors, (22880), 14725 states have internal predecessors, (22880), 1569 states have call successors, (1569), 190 states have call predecessors, (1569), 190 states have return successors, (1569), 1549 states have call predecessors, (1569), 1569 states have call successors, (1569) [2023-12-15 21:18:22,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16465 states to 16465 states and 26018 transitions. [2023-12-15 21:18:22,312 INFO L78 Accepts]: Start accepts. Automaton has 16465 states and 26018 transitions. Word has length 529 [2023-12-15 21:18:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:18:22,313 INFO L495 AbstractCegarLoop]: Abstraction has 16465 states and 26018 transitions. [2023-12-15 21:18:22,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:18:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 16465 states and 26018 transitions. [2023-12-15 21:18:22,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-15 21:18:22,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:22,325 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:18:22,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 21:18:22,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 21:18:22,534 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:22,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2093643537, now seen corresponding path program 1 times [2023-12-15 21:18:22,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:22,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500849330] [2023-12-15 21:18:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:22,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:22,583 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:18:22,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492046202] [2023-12-15 21:18:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:22,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:22,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:22,597 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:18:22,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:18:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:23,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-15 21:18:23,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 6507 proven. 393 refuted. 0 times theorem prover too weak. 4804 trivial. 0 not checked. [2023-12-15 21:18:24,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:18:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 480 proven. 195 refuted. 0 times theorem prover too weak. 11029 trivial. 0 not checked. [2023-12-15 21:18:26,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:26,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500849330] [2023-12-15 21:18:26,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:18:26,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492046202] [2023-12-15 21:18:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492046202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:18:26,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:18:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2023-12-15 21:18:26,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702020657] [2023-12-15 21:18:26,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:18:26,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-15 21:18:26,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-15 21:18:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2023-12-15 21:18:26,158 INFO L87 Difference]: Start difference. First operand 16465 states and 26018 transitions. Second operand has 32 states, 32 states have (on average 9.59375) internal successors, (307), 32 states have internal predecessors, (307), 8 states have call successors, (149), 5 states have call predecessors, (149), 12 states have return successors, (150), 8 states have call predecessors, (150), 8 states have call successors, (150) [2023-12-15 21:18:30,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 21:18:52,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:52,056 INFO L93 Difference]: Finished difference Result 201915 states and 312188 transitions. [2023-12-15 21:18:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2023-12-15 21:18:52,057 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.59375) internal successors, (307), 32 states have internal predecessors, (307), 8 states have call successors, (149), 5 states have call predecessors, (149), 12 states have return successors, (150), 8 states have call predecessors, (150), 8 states have call successors, (150) Word has length 530 [2023-12-15 21:18:52,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:52,694 INFO L225 Difference]: With dead ends: 201915 [2023-12-15 21:18:52,694 INFO L226 Difference]: Without dead ends: 185629 [2023-12-15 21:18:52,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1292 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24669 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=9973, Invalid=46909, Unknown=0, NotChecked=0, Total=56882 [2023-12-15 21:18:52,764 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 7112 mSDsluCounter, 10414 mSDsCounter, 0 mSdLazyCounter, 6610 mSolverCounterSat, 2895 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7124 SdHoareTripleChecker+Valid, 11430 SdHoareTripleChecker+Invalid, 9505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2895 IncrementalHoareTripleChecker+Valid, 6610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:18:52,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7124 Valid, 11430 Invalid, 9505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2895 Valid, 6610 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-12-15 21:18:52,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185629 states. Received shutdown request... [2023-12-15 21:18:53,010 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:18:53,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 21:18:53,041 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:18:53,049 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:18:53,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 21:18:53,219 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 21:18:53,224 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:18:53,227 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:18:53,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:18:53 BoogieIcfgContainer [2023-12-15 21:18:53,229 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:18:53,229 INFO L158 Benchmark]: Toolchain (without parser) took 62099.45ms. Allocated memory was 290.5MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 243.9MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-15 21:18:53,230 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 131.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:18:53,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.11ms. Allocated memory is still 290.5MB. Free memory was 243.4MB in the beginning and 207.2MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-15 21:18:53,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.89ms. Allocated memory is still 290.5MB. Free memory was 206.7MB in the beginning and 191.5MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 21:18:53,231 INFO L158 Benchmark]: Boogie Preprocessor took 114.84ms. Allocated memory is still 290.5MB. Free memory was 191.5MB in the beginning and 156.9MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-15 21:18:53,233 INFO L158 Benchmark]: RCFGBuilder took 1011.99ms. Allocated memory is still 290.5MB. Free memory was 156.9MB in the beginning and 155.3MB in the end (delta: 1.6MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. [2023-12-15 21:18:53,233 INFO L158 Benchmark]: TraceAbstraction took 60455.49ms. Allocated memory was 290.5MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 154.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-15 21:18:53,236 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 131.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 449.11ms. Allocated memory is still 290.5MB. Free memory was 243.4MB in the beginning and 207.2MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.89ms. Allocated memory is still 290.5MB. Free memory was 206.7MB in the beginning and 191.5MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 114.84ms. Allocated memory is still 290.5MB. Free memory was 191.5MB in the beginning and 156.9MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1011.99ms. Allocated memory is still 290.5MB. Free memory was 156.9MB in the beginning and 155.3MB in the end (delta: 1.6MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. * TraceAbstraction took 60455.49ms. Allocated memory was 290.5MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 154.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 286 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.4s, OverallIterations: 16, TraceHistogramMax: 77, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 35.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20412 SdHoareTripleChecker+Valid, 16.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20177 mSDsluCounter, 31856 SdHoareTripleChecker+Invalid, 15.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22999 mSDsCounter, 4921 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12550 IncrementalHoareTripleChecker+Invalid, 17471 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4921 mSolverCounterUnsat, 8857 mSDtfsCounter, 12550 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12420 GetRequests, 12039 SyntacticMatches, 2 SemanticMatches, 379 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25292 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16465occurred in iteration=15, InterpolantAutomatonStates: 349, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 10239 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 8968 NumberOfCodeBlocks, 8968 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 12116 ConstructedInterpolants, 0 QuantifiedInterpolants, 36199 SizeOfPredicates, 57 NumberOfNonLiveVariables, 20917 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 23 InterpolantComputations, 9 PerfectInterpolantSequences, 266837/269192 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