/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-66.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:10:34,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:10:34,657 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:10:34,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:10:34,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:10:34,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:10:34,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:10:34,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:10:34,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:10:34,676 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:10:34,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:10:34,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:10:34,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:10:34,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:10:34,677 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:10:34,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:10:34,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:10:34,678 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:10:34,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:10:34,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:10:34,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:10:34,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:10:34,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:10:34,679 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:10:34,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:10:34,679 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:10:34,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:10:34,680 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:10:34,680 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:10:34,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:10:34,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:10:34,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:10:34,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:10:34,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:10:34,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:10:34,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:10:34,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:10:34,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:10:34,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:10:34,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:10:34,681 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:10:34,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:10:34,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:10:34,682 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:10:34,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:10:34,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:10:34,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:10:34,876 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:10:34,876 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:10:34,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-66.i [2023-12-16 04:10:35,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:10:36,122 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:10:36,123 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-66.i [2023-12-16 04:10:36,133 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4230acf89/dced1b0556dc453f95adb5d2533086c0/FLAG2c8e6dd6d [2023-12-16 04:10:36,144 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4230acf89/dced1b0556dc453f95adb5d2533086c0 [2023-12-16 04:10:36,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:10:36,147 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:10:36,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:10:36,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:10:36,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:10:36,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ae5a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36, skipping insertion in model container [2023-12-16 04:10:36,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,206 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:10:36,320 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-66.i[916,929] [2023-12-16 04:10:36,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:10:36,476 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:10:36,484 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-66.i[916,929] [2023-12-16 04:10:36,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:10:36,606 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:10:36,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36 WrapperNode [2023-12-16 04:10:36,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:10:36,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:10:36,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:10:36,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:10:36,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,733 INFO L138 Inliner]: procedures = 26, calls = 81, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 747 [2023-12-16 04:10:36,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:10:36,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:10:36,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:10:36,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:10:36,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,810 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 04:10:36,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:10:36,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:10:36,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:10:36,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:10:36,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (1/1) ... [2023-12-16 04:10:36,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:10:36,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:36,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:10:36,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:10:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:10:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:10:36,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:10:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:10:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:10:36,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:10:37,060 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:10:37,063 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:10:37,910 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:10:37,953 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:10:37,953 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:10:37,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:10:37 BoogieIcfgContainer [2023-12-16 04:10:37,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:10:37,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:10:37,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:10:37,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:10:37,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:10:36" (1/3) ... [2023-12-16 04:10:37,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d915491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:10:37, skipping insertion in model container [2023-12-16 04:10:37,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:10:36" (2/3) ... [2023-12-16 04:10:37,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d915491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:10:37, skipping insertion in model container [2023-12-16 04:10:37,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:10:37" (3/3) ... [2023-12-16 04:10:37,960 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-66.i [2023-12-16 04:10:37,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:10:37,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:10:38,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:10:38,015 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;@10ded172, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:10:38,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:10:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 186 states have (on average 1.5698924731182795) internal successors, (292), 187 states have internal predecessors, (292), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-16 04:10:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-16 04:10:38,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:38,050 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:38,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:38,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash 805055394, now seen corresponding path program 1 times [2023-12-16 04:10:38,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:38,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573871805] [2023-12-16 04:10:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:38,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:38,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:38,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573871805] [2023-12-16 04:10:38,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:10:38,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047033180] [2023-12-16 04:10:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:38,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:38,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:38,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:38,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:10:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:38,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:10:38,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2023-12-16 04:10:38,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:38,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047033180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:38,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:38,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:10:38,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752579499] [2023-12-16 04:10:38,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:38,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:10:38,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:38,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:10:38,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:10:38,808 INFO L87 Difference]: Start difference. First operand has 257 states, 186 states have (on average 1.5698924731182795) internal successors, (292), 187 states have internal predecessors, (292), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 2 states have call successors, (68) [2023-12-16 04:10:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:38,872 INFO L93 Difference]: Finished difference Result 511 states and 922 transitions. [2023-12-16 04:10:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:10:38,875 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 2 states have call successors, (68) Word has length 468 [2023-12-16 04:10:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:38,885 INFO L225 Difference]: With dead ends: 511 [2023-12-16 04:10:38,885 INFO L226 Difference]: Without dead ends: 255 [2023-12-16 04:10:38,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:10:38,891 INFO L413 NwaCegarLoop]: 420 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, 420 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:38,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 420 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:10:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-16 04:10:38,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-12-16 04:10:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 185 states have (on average 1.5513513513513513) internal successors, (287), 185 states have internal predecessors, (287), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-16 04:10:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 423 transitions. [2023-12-16 04:10:38,963 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 423 transitions. Word has length 468 [2023-12-16 04:10:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:38,963 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 423 transitions. [2023-12-16 04:10:38,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 2 states have call successors, (68) [2023-12-16 04:10:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 423 transitions. [2023-12-16 04:10:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-16 04:10:38,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:38,971 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:38,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:39,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 04:10:39,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:39,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:39,183 INFO L85 PathProgramCache]: Analyzing trace with hash 834681686, now seen corresponding path program 1 times [2023-12-16 04:10:39,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:39,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093905091] [2023-12-16 04:10:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:39,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:39,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:39,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556722627] [2023-12-16 04:10:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:39,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:39,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:39,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:39,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:10:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:39,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:10:39,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:10:39,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:39,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:39,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093905091] [2023-12-16 04:10:39,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:39,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556722627] [2023-12-16 04:10:39,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556722627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:39,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:39,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:10:39,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545866410] [2023-12-16 04:10:39,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:39,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:10:39,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:10:39,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:10:39,731 INFO L87 Difference]: Start difference. First operand 255 states and 423 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:39,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:39,892 INFO L93 Difference]: Finished difference Result 541 states and 892 transitions. [2023-12-16 04:10:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:10:39,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 468 [2023-12-16 04:10:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:39,906 INFO L225 Difference]: With dead ends: 541 [2023-12-16 04:10:39,907 INFO L226 Difference]: Without dead ends: 287 [2023-12-16 04:10:39,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:10:39,909 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 66 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:39,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1266 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:10:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-16 04:10:39,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 257. [2023-12-16 04:10:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 187 states have (on average 1.5454545454545454) internal successors, (289), 187 states have internal predecessors, (289), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-16 04:10:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 425 transitions. [2023-12-16 04:10:39,928 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 425 transitions. Word has length 468 [2023-12-16 04:10:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:39,937 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 425 transitions. [2023-12-16 04:10:39,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 425 transitions. [2023-12-16 04:10:39,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-16 04:10:39,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:39,941 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:39,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 04:10:40,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 04:10:40,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:40,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:40,149 INFO L85 PathProgramCache]: Analyzing trace with hash 441654676, now seen corresponding path program 1 times [2023-12-16 04:10:40,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:40,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932053198] [2023-12-16 04:10:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:40,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:40,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:40,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118983777] [2023-12-16 04:10:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:40,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:40,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:40,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:40,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:10:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:40,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:10:40,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:10:40,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:40,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:40,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932053198] [2023-12-16 04:10:40,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:40,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118983777] [2023-12-16 04:10:40,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118983777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:40,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:40,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:10:40,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735393115] [2023-12-16 04:10:40,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:40,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:10:40,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:40,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:10:40,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:10:40,635 INFO L87 Difference]: Start difference. First operand 257 states and 425 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:40,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:40,731 INFO L93 Difference]: Finished difference Result 671 states and 1107 transitions. [2023-12-16 04:10:40,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:10:40,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 468 [2023-12-16 04:10:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:40,735 INFO L225 Difference]: With dead ends: 671 [2023-12-16 04:10:40,735 INFO L226 Difference]: Without dead ends: 415 [2023-12-16 04:10:40,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:10:40,738 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 250 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:40,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 839 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:10:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-16 04:10:40,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 412. [2023-12-16 04:10:40,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 326 states have (on average 1.5674846625766872) internal successors, (511), 327 states have internal predecessors, (511), 83 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-16 04:10:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 677 transitions. [2023-12-16 04:10:40,775 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 677 transitions. Word has length 468 [2023-12-16 04:10:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:40,778 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 677 transitions. [2023-12-16 04:10:40,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:40,779 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 677 transitions. [2023-12-16 04:10:40,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-16 04:10:40,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:40,783 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:40,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:40,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:40,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:40,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1250856613, now seen corresponding path program 1 times [2023-12-16 04:10:40,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:40,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071207304] [2023-12-16 04:10:40,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:40,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:41,060 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:41,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755332586] [2023-12-16 04:10:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:41,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:41,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:41,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:41,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:10:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:41,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:10:41,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:10:41,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:41,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:41,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071207304] [2023-12-16 04:10:41,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:41,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755332586] [2023-12-16 04:10:41,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755332586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:41,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:41,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:10:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870043949] [2023-12-16 04:10:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:41,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:10:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:10:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:10:41,432 INFO L87 Difference]: Start difference. First operand 412 states and 677 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:41,501 INFO L93 Difference]: Finished difference Result 1226 states and 2013 transitions. [2023-12-16 04:10:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:10:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2023-12-16 04:10:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:41,507 INFO L225 Difference]: With dead ends: 1226 [2023-12-16 04:10:41,507 INFO L226 Difference]: Without dead ends: 815 [2023-12-16 04:10:41,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:10:41,509 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 404 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:41,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1126 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:10:41,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2023-12-16 04:10:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 813. [2023-12-16 04:10:41,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 642 states have (on average 1.5514018691588785) internal successors, (996), 644 states have internal predecessors, (996), 166 states have call successors, (166), 4 states have call predecessors, (166), 4 states have return successors, (166), 164 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-16 04:10:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1328 transitions. [2023-12-16 04:10:41,546 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1328 transitions. Word has length 469 [2023-12-16 04:10:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:41,546 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1328 transitions. [2023-12-16 04:10:41,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:41,547 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1328 transitions. [2023-12-16 04:10:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-16 04:10:41,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:41,550 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:41,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:41,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:41,761 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:41,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:41,761 INFO L85 PathProgramCache]: Analyzing trace with hash 760610533, now seen corresponding path program 1 times [2023-12-16 04:10:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472248920] [2023-12-16 04:10:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:41,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:41,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:41,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676511315] [2023-12-16 04:10:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:41,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:41,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:41,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:41,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:10:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:42,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:10:42,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:10:42,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:42,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:42,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472248920] [2023-12-16 04:10:42,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:42,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676511315] [2023-12-16 04:10:42,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676511315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:42,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:42,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:10:42,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831471217] [2023-12-16 04:10:42,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:42,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:10:42,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:42,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:10:42,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:10:42,226 INFO L87 Difference]: Start difference. First operand 813 states and 1328 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:42,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:42,291 INFO L93 Difference]: Finished difference Result 1629 states and 2660 transitions. [2023-12-16 04:10:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:10:42,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2023-12-16 04:10:42,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:42,295 INFO L225 Difference]: With dead ends: 1629 [2023-12-16 04:10:42,295 INFO L226 Difference]: Without dead ends: 817 [2023-12-16 04:10:42,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:10:42,298 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 388 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:42,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 813 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:10:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-12-16 04:10:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 815. [2023-12-16 04:10:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 644 states have (on average 1.5403726708074534) internal successors, (992), 646 states have internal predecessors, (992), 166 states have call successors, (166), 4 states have call predecessors, (166), 4 states have return successors, (166), 164 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-16 04:10:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1324 transitions. [2023-12-16 04:10:42,341 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1324 transitions. Word has length 469 [2023-12-16 04:10:42,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:42,342 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1324 transitions. [2023-12-16 04:10:42,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1324 transitions. [2023-12-16 04:10:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-16 04:10:42,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:42,346 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:42,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:42,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:42,556 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:42,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:42,557 INFO L85 PathProgramCache]: Analyzing trace with hash 783242787, now seen corresponding path program 1 times [2023-12-16 04:10:42,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:42,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153129012] [2023-12-16 04:10:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:42,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:42,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:42,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176210520] [2023-12-16 04:10:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:42,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:42,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:42,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:42,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:10:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:42,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:10:42,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:10:42,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:42,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153129012] [2023-12-16 04:10:42,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176210520] [2023-12-16 04:10:42,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176210520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:42,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:42,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:10:42,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260488972] [2023-12-16 04:10:42,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:42,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:10:42,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:10:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:10:42,988 INFO L87 Difference]: Start difference. First operand 815 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:43,043 INFO L93 Difference]: Finished difference Result 2439 states and 3962 transitions. [2023-12-16 04:10:43,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:10:43,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2023-12-16 04:10:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:43,050 INFO L225 Difference]: With dead ends: 2439 [2023-12-16 04:10:43,050 INFO L226 Difference]: Without dead ends: 1625 [2023-12-16 04:10:43,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:10:43,053 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 393 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:43,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 913 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:10:43,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2023-12-16 04:10:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1623. [2023-12-16 04:10:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1282 states have (on average 1.533541341653666) internal successors, (1966), 1286 states have internal predecessors, (1966), 332 states have call successors, (332), 8 states have call predecessors, (332), 8 states have return successors, (332), 328 states have call predecessors, (332), 332 states have call successors, (332) [2023-12-16 04:10:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2630 transitions. [2023-12-16 04:10:43,138 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2630 transitions. Word has length 469 [2023-12-16 04:10:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:43,138 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 2630 transitions. [2023-12-16 04:10:43,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2630 transitions. [2023-12-16 04:10:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-16 04:10:43,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:43,142 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:43,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:43,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:43,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:43,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1550149851, now seen corresponding path program 1 times [2023-12-16 04:10:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:43,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79556065] [2023-12-16 04:10:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:43,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:43,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459168163] [2023-12-16 04:10:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:43,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:43,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:43,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:43,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:10:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:43,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:10:43,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:10:43,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:43,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:43,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79556065] [2023-12-16 04:10:43,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:43,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459168163] [2023-12-16 04:10:43,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459168163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:43,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:43,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:10:43,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102977266] [2023-12-16 04:10:43,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:43,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:10:43,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:43,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:10:43,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:10:43,749 INFO L87 Difference]: Start difference. First operand 1623 states and 2630 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:43,849 INFO L93 Difference]: Finished difference Result 4439 states and 7132 transitions. [2023-12-16 04:10:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:10:43,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2023-12-16 04:10:43,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:43,859 INFO L225 Difference]: With dead ends: 4439 [2023-12-16 04:10:43,859 INFO L226 Difference]: Without dead ends: 2817 [2023-12-16 04:10:43,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:10:43,864 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 337 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:43,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1225 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:10:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2023-12-16 04:10:44,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2803. [2023-12-16 04:10:44,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2202 states have (on average 1.5013623978201636) internal successors, (3306), 2214 states have internal predecessors, (3306), 584 states have call successors, (584), 16 states have call predecessors, (584), 16 states have return successors, (584), 572 states have call predecessors, (584), 584 states have call successors, (584) [2023-12-16 04:10:44,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 4474 transitions. [2023-12-16 04:10:44,017 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 4474 transitions. Word has length 469 [2023-12-16 04:10:44,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:44,017 INFO L495 AbstractCegarLoop]: Abstraction has 2803 states and 4474 transitions. [2023-12-16 04:10:44,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 4474 transitions. [2023-12-16 04:10:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-16 04:10:44,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:44,022 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:44,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:44,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:44,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:44,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:44,231 INFO L85 PathProgramCache]: Analyzing trace with hash -656663513, now seen corresponding path program 1 times [2023-12-16 04:10:44,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:44,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617173267] [2023-12-16 04:10:44,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:44,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:44,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:44,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289604490] [2023-12-16 04:10:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:44,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:44,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:44,283 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:44,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:10:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:44,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 04:10:44,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:10:44,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:44,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:44,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617173267] [2023-12-16 04:10:44,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:44,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289604490] [2023-12-16 04:10:44,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289604490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:44,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:44,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:10:44,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504436977] [2023-12-16 04:10:44,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:44,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:10:44,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:10:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:10:44,689 INFO L87 Difference]: Start difference. First operand 2803 states and 4474 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:45,226 INFO L93 Difference]: Finished difference Result 8477 states and 13493 transitions. [2023-12-16 04:10:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:10:45,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2023-12-16 04:10:45,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:45,247 INFO L225 Difference]: With dead ends: 8477 [2023-12-16 04:10:45,247 INFO L226 Difference]: Without dead ends: 5675 [2023-12-16 04:10:45,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:10:45,254 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 1038 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:45,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1233 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:10:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2023-12-16 04:10:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 5027. [2023-12-16 04:10:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5027 states, 3946 states have (on average 1.4956918398378105) internal successors, (5902), 3962 states have internal predecessors, (5902), 1048 states have call successors, (1048), 32 states have call predecessors, (1048), 32 states have return successors, (1048), 1032 states have call predecessors, (1048), 1048 states have call successors, (1048) [2023-12-16 04:10:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 7998 transitions. [2023-12-16 04:10:45,528 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 7998 transitions. Word has length 469 [2023-12-16 04:10:45,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:45,529 INFO L495 AbstractCegarLoop]: Abstraction has 5027 states and 7998 transitions. [2023-12-16 04:10:45,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 7998 transitions. [2023-12-16 04:10:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-16 04:10:45,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:45,535 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:45,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:45,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 04:10:45,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:45,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1219523394, now seen corresponding path program 1 times [2023-12-16 04:10:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:45,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295768856] [2023-12-16 04:10:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:45,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:45,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638202666] [2023-12-16 04:10:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:45,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:45,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:45,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:45,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:10:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:46,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:10:46,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 3811 proven. 57 refuted. 0 times theorem prover too weak. 5244 trivial. 0 not checked. [2023-12-16 04:10:46,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:10:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 144 proven. 57 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-16 04:10:46,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295768856] [2023-12-16 04:10:46,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638202666] [2023-12-16 04:10:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638202666] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:10:46,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:10:46,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:10:46,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391476153] [2023-12-16 04:10:46,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:10:46,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:10:46,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:46,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:10:46,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:10:46,544 INFO L87 Difference]: Start difference. First operand 5027 states and 7998 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2023-12-16 04:10:47,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:47,181 INFO L93 Difference]: Finished difference Result 8135 states and 12967 transitions. [2023-12-16 04:10:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:10:47,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) Word has length 469 [2023-12-16 04:10:47,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:47,194 INFO L225 Difference]: With dead ends: 8135 [2023-12-16 04:10:47,195 INFO L226 Difference]: Without dead ends: 3109 [2023-12-16 04:10:47,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 930 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:10:47,207 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 293 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:47,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1118 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:10:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2023-12-16 04:10:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 3072. [2023-12-16 04:10:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 2393 states have (on average 1.5048056832427914) internal successors, (3601), 2398 states have internal predecessors, (3601), 652 states have call successors, (652), 26 states have call predecessors, (652), 26 states have return successors, (652), 647 states have call predecessors, (652), 652 states have call successors, (652) [2023-12-16 04:10:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4905 transitions. [2023-12-16 04:10:47,406 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4905 transitions. Word has length 469 [2023-12-16 04:10:47,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:47,406 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4905 transitions. [2023-12-16 04:10:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2023-12-16 04:10:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4905 transitions. [2023-12-16 04:10:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-16 04:10:47,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:47,411 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:47,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:47,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:47,619 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:47,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:47,620 INFO L85 PathProgramCache]: Analyzing trace with hash 150592194, now seen corresponding path program 1 times [2023-12-16 04:10:47,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:47,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032757747] [2023-12-16 04:10:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:47,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:47,658 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:47,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825699977] [2023-12-16 04:10:47,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:47,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:47,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:47,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:47,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:10:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:48,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:10:48,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:10:48,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032757747] [2023-12-16 04:10:48,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825699977] [2023-12-16 04:10:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825699977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:48,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:10:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308504435] [2023-12-16 04:10:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:48,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:10:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:48,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:10:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:10:48,372 INFO L87 Difference]: Start difference. First operand 3072 states and 4905 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:49,051 INFO L93 Difference]: Finished difference Result 15708 states and 24921 transitions. [2023-12-16 04:10:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:10:49,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2023-12-16 04:10:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:49,110 INFO L225 Difference]: With dead ends: 15708 [2023-12-16 04:10:49,111 INFO L226 Difference]: Without dead ends: 12722 [2023-12-16 04:10:49,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:10:49,123 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 2212 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:49,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 2190 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:10:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12722 states. [2023-12-16 04:10:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12722 to 7016. [2023-12-16 04:10:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 5489 states have (on average 1.464929859719439) internal successors, (8041), 5518 states have internal predecessors, (8041), 1452 states have call successors, (1452), 74 states have call predecessors, (1452), 74 states have return successors, (1452), 1423 states have call predecessors, (1452), 1452 states have call successors, (1452) [2023-12-16 04:10:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10945 transitions. [2023-12-16 04:10:49,726 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10945 transitions. Word has length 469 [2023-12-16 04:10:49,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:49,726 INFO L495 AbstractCegarLoop]: Abstraction has 7016 states and 10945 transitions. [2023-12-16 04:10:49,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10945 transitions. [2023-12-16 04:10:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-16 04:10:49,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:49,734 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:49,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:49,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 04:10:49,943 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:49,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:49,943 INFO L85 PathProgramCache]: Analyzing trace with hash 29477054, now seen corresponding path program 1 times [2023-12-16 04:10:49,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676505476] [2023-12-16 04:10:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:49,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:49,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491843999] [2023-12-16 04:10:49,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:49,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:49,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:49,988 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:49,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:10:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:50,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:10:50,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 3631 proven. 147 refuted. 0 times theorem prover too weak. 5334 trivial. 0 not checked. [2023-12-16 04:10:50,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:10:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 54 proven. 147 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-16 04:10:50,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:50,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676505476] [2023-12-16 04:10:50,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:50,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491843999] [2023-12-16 04:10:50,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491843999] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:10:50,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:10:50,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:10:50,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309109013] [2023-12-16 04:10:50,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:10:50,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:10:50,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:50,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:10:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:10:50,909 INFO L87 Difference]: Start difference. First operand 7016 states and 10945 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-16 04:10:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:51,299 INFO L93 Difference]: Finished difference Result 10092 states and 15799 transitions. [2023-12-16 04:10:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:10:51,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) Word has length 469 [2023-12-16 04:10:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:51,308 INFO L225 Difference]: With dead ends: 10092 [2023-12-16 04:10:51,309 INFO L226 Difference]: Without dead ends: 3162 [2023-12-16 04:10:51,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 930 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:10:51,321 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 488 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:51,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 875 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:10:51,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2023-12-16 04:10:51,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 3108. [2023-12-16 04:10:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 2420 states have (on average 1.4925619834710744) internal successors, (3612), 2425 states have internal predecessors, (3612), 652 states have call successors, (652), 35 states have call predecessors, (652), 35 states have return successors, (652), 647 states have call predecessors, (652), 652 states have call successors, (652) [2023-12-16 04:10:51,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4916 transitions. [2023-12-16 04:10:51,461 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4916 transitions. Word has length 469 [2023-12-16 04:10:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:51,462 INFO L495 AbstractCegarLoop]: Abstraction has 3108 states and 4916 transitions. [2023-12-16 04:10:51,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-16 04:10:51,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4916 transitions. [2023-12-16 04:10:51,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-12-16 04:10:51,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:51,466 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:51,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:51,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 04:10:51,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:51,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1055144555, now seen corresponding path program 1 times [2023-12-16 04:10:51,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:51,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827861082] [2023-12-16 04:10:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:51,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:51,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:51,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706433727] [2023-12-16 04:10:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:51,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:51,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:51,712 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:51,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:10:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:52,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:10:52,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 3363 proven. 153 refuted. 0 times theorem prover too weak. 5596 trivial. 0 not checked. [2023-12-16 04:10:52,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:10:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 48 proven. 153 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-16 04:10:52,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:52,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827861082] [2023-12-16 04:10:52,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:52,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706433727] [2023-12-16 04:10:52,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706433727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:10:52,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:10:52,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:10:52,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778973119] [2023-12-16 04:10:52,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:10:52,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:10:52,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:52,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:10:52,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:10:52,673 INFO L87 Difference]: Start difference. First operand 3108 states and 4916 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-16 04:10:53,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:53,076 INFO L93 Difference]: Finished difference Result 5496 states and 8622 transitions. [2023-12-16 04:10:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:10:53,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 470 [2023-12-16 04:10:53,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:53,083 INFO L225 Difference]: With dead ends: 5496 [2023-12-16 04:10:53,083 INFO L226 Difference]: Without dead ends: 2478 [2023-12-16 04:10:53,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 932 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:10:53,090 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 463 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:53,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 826 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:10:53,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2023-12-16 04:10:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2224. [2023-12-16 04:10:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1587 states have (on average 1.4259609325771896) internal successors, (2263), 1588 states have internal predecessors, (2263), 592 states have call successors, (592), 44 states have call predecessors, (592), 44 states have return successors, (592), 591 states have call predecessors, (592), 592 states have call successors, (592) [2023-12-16 04:10:53,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3447 transitions. [2023-12-16 04:10:53,195 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3447 transitions. Word has length 470 [2023-12-16 04:10:53,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:53,195 INFO L495 AbstractCegarLoop]: Abstraction has 2224 states and 3447 transitions. [2023-12-16 04:10:53,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-16 04:10:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3447 transitions. [2023-12-16 04:10:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-12-16 04:10:53,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:53,199 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:53,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:53,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 04:10:53,407 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:53,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:53,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2098250248, now seen corresponding path program 1 times [2023-12-16 04:10:53,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:53,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395409882] [2023-12-16 04:10:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:53,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:53,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:53,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130719552] [2023-12-16 04:10:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:53,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:53,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:53,456 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:53,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:10:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:53,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:10:53,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4475 proven. 201 refuted. 0 times theorem prover too weak. 4436 trivial. 0 not checked. [2023-12-16 04:10:54,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:10:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-16 04:10:54,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:54,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395409882] [2023-12-16 04:10:54,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:54,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130719552] [2023-12-16 04:10:54,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130719552] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:10:54,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:10:54,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 04:10:54,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314502512] [2023-12-16 04:10:54,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:10:54,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:10:54,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:54,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:10:54,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:10:54,893 INFO L87 Difference]: Start difference. First operand 2224 states and 3447 transitions. Second operand has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 5 states have call successors, (135), 3 states have call predecessors, (135), 5 states have return successors, (136), 4 states have call predecessors, (136), 5 states have call successors, (136) [2023-12-16 04:10:55,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:55,494 INFO L93 Difference]: Finished difference Result 4496 states and 6880 transitions. [2023-12-16 04:10:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 04:10:55,495 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 5 states have call successors, (135), 3 states have call predecessors, (135), 5 states have return successors, (136), 4 states have call predecessors, (136), 5 states have call successors, (136) Word has length 470 [2023-12-16 04:10:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:55,501 INFO L225 Difference]: With dead ends: 4496 [2023-12-16 04:10:55,501 INFO L226 Difference]: Without dead ends: 2366 [2023-12-16 04:10:55,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 928 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:10:55,506 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 416 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:55,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1169 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:10:55,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2023-12-16 04:10:55,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2296. [2023-12-16 04:10:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 1641 states have (on average 1.4070688604509445) internal successors, (2309), 1642 states have internal predecessors, (2309), 592 states have call successors, (592), 62 states have call predecessors, (592), 62 states have return successors, (592), 591 states have call predecessors, (592), 592 states have call successors, (592) [2023-12-16 04:10:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3493 transitions. [2023-12-16 04:10:55,691 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3493 transitions. Word has length 470 [2023-12-16 04:10:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:55,692 INFO L495 AbstractCegarLoop]: Abstraction has 2296 states and 3493 transitions. [2023-12-16 04:10:55,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 5 states have call successors, (135), 3 states have call predecessors, (135), 5 states have return successors, (136), 4 states have call predecessors, (136), 5 states have call successors, (136) [2023-12-16 04:10:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3493 transitions. [2023-12-16 04:10:55,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-12-16 04:10:55,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:55,696 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:55,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-16 04:10:55,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 04:10:55,906 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:55,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1108971606, now seen corresponding path program 1 times [2023-12-16 04:10:55,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:55,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918900467] [2023-12-16 04:10:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:55,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:55,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:55,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208975722] [2023-12-16 04:10:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:55,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:55,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:55,966 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:55,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:10:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:56,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 04:10:56,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:10:56,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:56,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:56,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918900467] [2023-12-16 04:10:56,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:56,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208975722] [2023-12-16 04:10:56,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208975722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:56,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:56,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:10:56,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026402201] [2023-12-16 04:10:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:56,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:10:56,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:56,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:10:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:10:56,614 INFO L87 Difference]: Start difference. First operand 2296 states and 3493 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:56,875 INFO L93 Difference]: Finished difference Result 5289 states and 8077 transitions. [2023-12-16 04:10:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:10:56,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 471 [2023-12-16 04:10:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:56,883 INFO L225 Difference]: With dead ends: 5289 [2023-12-16 04:10:56,884 INFO L226 Difference]: Without dead ends: 3095 [2023-12-16 04:10:56,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:10:56,889 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 336 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:56,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1200 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:10:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2023-12-16 04:10:57,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 2367. [2023-12-16 04:10:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 1690 states have (on average 1.4100591715976332) internal successors, (2383), 1690 states have internal predecessors, (2383), 612 states have call successors, (612), 64 states have call predecessors, (612), 64 states have return successors, (612), 612 states have call predecessors, (612), 612 states have call successors, (612) [2023-12-16 04:10:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3607 transitions. [2023-12-16 04:10:57,033 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3607 transitions. Word has length 471 [2023-12-16 04:10:57,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:57,034 INFO L495 AbstractCegarLoop]: Abstraction has 2367 states and 3607 transitions. [2023-12-16 04:10:57,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:57,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3607 transitions. [2023-12-16 04:10:57,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-12-16 04:10:57,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:57,037 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:57,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:57,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:57,244 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:57,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1136037208, now seen corresponding path program 1 times [2023-12-16 04:10:57,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:57,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246578216] [2023-12-16 04:10:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:57,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:57,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518678317] [2023-12-16 04:10:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:57,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:57,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:57,300 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:57,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:10:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:57,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 04:10:57,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:10:58,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:58,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:58,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246578216] [2023-12-16 04:10:58,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:58,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518678317] [2023-12-16 04:10:58,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518678317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:58,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:58,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:10:58,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666582778] [2023-12-16 04:10:58,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:58,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:10:58,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:58,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:10:58,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:10:58,921 INFO L87 Difference]: Start difference. First operand 2367 states and 3607 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:59,322 INFO L93 Difference]: Finished difference Result 5343 states and 8157 transitions. [2023-12-16 04:10:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:10:59,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 471 [2023-12-16 04:10:59,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:59,330 INFO L225 Difference]: With dead ends: 5343 [2023-12-16 04:10:59,330 INFO L226 Difference]: Without dead ends: 3149 [2023-12-16 04:10:59,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:10:59,335 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 667 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:59,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1646 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:10:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2023-12-16 04:10:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 2385. [2023-12-16 04:10:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 1708 states have (on average 1.4104215456674474) internal successors, (2409), 1708 states have internal predecessors, (2409), 612 states have call successors, (612), 64 states have call predecessors, (612), 64 states have return successors, (612), 612 states have call predecessors, (612), 612 states have call successors, (612) [2023-12-16 04:10:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 3633 transitions. [2023-12-16 04:10:59,460 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 3633 transitions. Word has length 471 [2023-12-16 04:10:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:59,461 INFO L495 AbstractCegarLoop]: Abstraction has 2385 states and 3633 transitions. [2023-12-16 04:10:59,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:10:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 3633 transitions. [2023-12-16 04:10:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-16 04:10:59,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:59,464 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:59,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:59,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 04:10:59,672 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:59,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1844879090, now seen corresponding path program 1 times [2023-12-16 04:10:59,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:59,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777998154] [2023-12-16 04:10:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:59,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:59,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:59,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208040218] [2023-12-16 04:10:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:59,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:59,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:59,715 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:59,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:11:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:11:00,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:11:00,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:11:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4351 proven. 75 refuted. 0 times theorem prover too weak. 4686 trivial. 0 not checked. [2023-12-16 04:11:00,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:11:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 126 proven. 75 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-16 04:11:00,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:11:00,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777998154] [2023-12-16 04:11:00,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:11:00,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208040218] [2023-12-16 04:11:00,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208040218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:11:00,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:11:00,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 04:11:00,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123170364] [2023-12-16 04:11:00,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:11:00,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:11:00,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:11:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:11:00,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:11:00,520 INFO L87 Difference]: Start difference. First operand 2385 states and 3633 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-16 04:11:01,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:11:01,062 INFO L93 Difference]: Finished difference Result 3549 states and 5371 transitions. [2023-12-16 04:11:01,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:11:01,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) Word has length 472 [2023-12-16 04:11:01,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:11:01,067 INFO L225 Difference]: With dead ends: 3549 [2023-12-16 04:11:01,067 INFO L226 Difference]: Without dead ends: 1355 [2023-12-16 04:11:01,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 935 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:11:01,104 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 954 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:11:01,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 843 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:11:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2023-12-16 04:11:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1311. [2023-12-16 04:11:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 929 states have (on average 1.3928955866523143) internal successors, (1294), 929 states have internal predecessors, (1294), 340 states have call successors, (340), 41 states have call predecessors, (340), 41 states have return successors, (340), 340 states have call predecessors, (340), 340 states have call successors, (340) [2023-12-16 04:11:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1974 transitions. [2023-12-16 04:11:01,186 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1974 transitions. Word has length 472 [2023-12-16 04:11:01,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:11:01,187 INFO L495 AbstractCegarLoop]: Abstraction has 1311 states and 1974 transitions. [2023-12-16 04:11:01,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-16 04:11:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1974 transitions. [2023-12-16 04:11:01,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-16 04:11:01,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:11:01,190 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:11:01,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 04:11:01,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 04:11:01,399 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:11:01,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:11:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash -342312787, now seen corresponding path program 1 times [2023-12-16 04:11:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:11:01,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762920152] [2023-12-16 04:11:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:11:01,442 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:11:01,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203823654] [2023-12-16 04:11:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:01,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:01,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:11:01,443 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:11:01,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 04:11:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:11:01,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 04:11:01,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:11:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:11:02,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:11:02,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:11:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762920152] [2023-12-16 04:11:02,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:11:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203823654] [2023-12-16 04:11:02,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203823654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:11:02,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:11:02,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 04:11:02,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788801175] [2023-12-16 04:11:02,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:11:02,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:11:02,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:11:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:11:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:11:02,346 INFO L87 Difference]: Start difference. First operand 1311 states and 1974 transitions. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 9 states have internal predecessors, (136), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:11:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:11:03,663 INFO L93 Difference]: Finished difference Result 5098 states and 7631 transitions. [2023-12-16 04:11:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 04:11:03,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 9 states have internal predecessors, (136), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 473 [2023-12-16 04:11:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:11:03,673 INFO L225 Difference]: With dead ends: 5098 [2023-12-16 04:11:03,673 INFO L226 Difference]: Without dead ends: 3909 [2023-12-16 04:11:03,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:11:03,676 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 2933 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2933 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:11:03,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2933 Valid, 3538 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 04:11:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3909 states. [2023-12-16 04:11:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3909 to 2182. [2023-12-16 04:11:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 1607 states have (on average 1.390168014934661) internal successors, (2234), 1611 states have internal predecessors, (2234), 508 states have call successors, (508), 66 states have call predecessors, (508), 66 states have return successors, (508), 504 states have call predecessors, (508), 508 states have call successors, (508) [2023-12-16 04:11:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 3250 transitions. [2023-12-16 04:11:03,822 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 3250 transitions. Word has length 473 [2023-12-16 04:11:03,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:11:03,823 INFO L495 AbstractCegarLoop]: Abstraction has 2182 states and 3250 transitions. [2023-12-16 04:11:03,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 9 states have internal predecessors, (136), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-16 04:11:03,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 3250 transitions. [2023-12-16 04:11:03,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-16 04:11:03,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:11:03,826 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:11:03,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 04:11:04,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 04:11:04,035 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:11:04,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:11:04,035 INFO L85 PathProgramCache]: Analyzing trace with hash -759709393, now seen corresponding path program 1 times [2023-12-16 04:11:04,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:11:04,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112212697] [2023-12-16 04:11:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:04,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:11:04,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:11:04,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189644612] [2023-12-16 04:11:04,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:04,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:04,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:11:04,100 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:11:04,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 04:11:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:11:04,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:11:04,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:11:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4023 proven. 63 refuted. 0 times theorem prover too weak. 5026 trivial. 0 not checked. [2023-12-16 04:11:04,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:11:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 138 proven. 63 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-16 04:11:04,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:11:04,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112212697] [2023-12-16 04:11:04,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:11:04,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189644612] [2023-12-16 04:11:04,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189644612] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:11:04,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:11:04,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:11:04,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636484458] [2023-12-16 04:11:04,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:11:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:11:04,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:11:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:11:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:11:04,853 INFO L87 Difference]: Start difference. First operand 2182 states and 3250 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-16 04:11:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:11:05,293 INFO L93 Difference]: Finished difference Result 4210 states and 6234 transitions. [2023-12-16 04:11:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:11:05,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 473 [2023-12-16 04:11:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:11:05,303 INFO L225 Difference]: With dead ends: 4210 [2023-12-16 04:11:05,303 INFO L226 Difference]: Without dead ends: 2263 [2023-12-16 04:11:05,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 938 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:11:05,307 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 503 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:11:05,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 838 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:11:05,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2023-12-16 04:11:05,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2196. [2023-12-16 04:11:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 1616 states have (on average 1.3818069306930694) internal successors, (2233), 1620 states have internal predecessors, (2233), 508 states have call successors, (508), 71 states have call predecessors, (508), 71 states have return successors, (508), 504 states have call predecessors, (508), 508 states have call successors, (508) [2023-12-16 04:11:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3249 transitions. [2023-12-16 04:11:05,453 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3249 transitions. Word has length 473 [2023-12-16 04:11:05,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:11:05,453 INFO L495 AbstractCegarLoop]: Abstraction has 2196 states and 3249 transitions. [2023-12-16 04:11:05,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-16 04:11:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3249 transitions. [2023-12-16 04:11:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-16 04:11:05,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:11:05,456 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:11:05,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 04:11:05,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 04:11:05,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:11:05,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:11:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1859107543, now seen corresponding path program 1 times [2023-12-16 04:11:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:11:05,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141041781] [2023-12-16 04:11:05,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:05,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:11:05,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:11:05,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634236535] [2023-12-16 04:11:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:05,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:05,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:11:05,705 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:11:05,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-16 04:11:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:11:06,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:11:06,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:11:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 67 proven. 201 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 04:11:06,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:11:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-16 04:11:07,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:11:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141041781] [2023-12-16 04:11:07,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:11:07,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634236535] [2023-12-16 04:11:07,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634236535] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:11:07,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:11:07,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 04:11:07,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040434235] [2023-12-16 04:11:07,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:11:07,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:11:07,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:11:07,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:11:07,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:11:07,025 INFO L87 Difference]: Start difference. First operand 2196 states and 3249 transitions. Second operand has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 3 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 3 states have call successors, (136) [2023-12-16 04:11:07,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:11:07,550 INFO L93 Difference]: Finished difference Result 4438 states and 6542 transitions. [2023-12-16 04:11:07,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:11:07,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 3 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 3 states have call successors, (136) Word has length 474 [2023-12-16 04:11:07,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:11:07,557 INFO L225 Difference]: With dead ends: 4438 [2023-12-16 04:11:07,557 INFO L226 Difference]: Without dead ends: 2534 [2023-12-16 04:11:07,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:11:07,561 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 765 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:11:07,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1306 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:11:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2023-12-16 04:11:07,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2236. [2023-12-16 04:11:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 1656 states have (on average 1.3798309178743962) internal successors, (2285), 1660 states have internal predecessors, (2285), 508 states have call successors, (508), 71 states have call predecessors, (508), 71 states have return successors, (508), 504 states have call predecessors, (508), 508 states have call successors, (508) [2023-12-16 04:11:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3301 transitions. [2023-12-16 04:11:07,709 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3301 transitions. Word has length 474 [2023-12-16 04:11:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:11:07,709 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 3301 transitions. [2023-12-16 04:11:07,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 3 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 3 states have call successors, (136) [2023-12-16 04:11:07,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3301 transitions. [2023-12-16 04:11:07,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 04:11:07,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:11:07,712 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:11:07,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-16 04:11:07,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:07,921 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:11:07,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:11:07,921 INFO L85 PathProgramCache]: Analyzing trace with hash -182831452, now seen corresponding path program 1 times [2023-12-16 04:11:07,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:11:07,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014227722] [2023-12-16 04:11:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:07,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:11:07,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:11:07,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791916413] [2023-12-16 04:11:07,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:07,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:07,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:11:07,961 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:11:07,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-16 04:11:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:11:08,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 04:11:08,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:11:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 7169 proven. 387 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2023-12-16 04:11:09,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:11:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 237 proven. 162 refuted. 0 times theorem prover too weak. 8713 trivial. 0 not checked. [2023-12-16 04:11:10,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:11:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014227722] [2023-12-16 04:11:10,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:11:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791916413] [2023-12-16 04:11:10,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791916413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:11:10,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:11:10,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9] total 25 [2023-12-16 04:11:10,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344035789] [2023-12-16 04:11:10,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:11:10,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 04:11:10,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:11:10,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 04:11:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-12-16 04:11:10,099 INFO L87 Difference]: Start difference. First operand 2236 states and 3301 transitions. Second operand has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 8 states have call successors, (122), 6 states have call predecessors, (122), 12 states have return successors, (123), 8 states have call predecessors, (123), 8 states have call successors, (123) [2023-12-16 04:11:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:11:13,074 INFO L93 Difference]: Finished difference Result 7249 states and 10463 transitions. [2023-12-16 04:11:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-16 04:11:13,075 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 8 states have call successors, (122), 6 states have call predecessors, (122), 12 states have return successors, (123), 8 states have call predecessors, (123), 8 states have call successors, (123) Word has length 475 [2023-12-16 04:11:13,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:11:13,084 INFO L225 Difference]: With dead ends: 7249 [2023-12-16 04:11:13,084 INFO L226 Difference]: Without dead ends: 5231 [2023-12-16 04:11:13,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 933 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2574 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1661, Invalid=6171, Unknown=0, NotChecked=0, Total=7832 [2023-12-16 04:11:13,090 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 3192 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 2802 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3206 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 3479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 2802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:11:13,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3206 Valid, 2723 Invalid, 3479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 2802 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 04:11:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2023-12-16 04:11:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 4491. [2023-12-16 04:11:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 3369 states have (on average 1.3505491243692491) internal successors, (4550), 3381 states have internal predecessors, (4550), 916 states have call successors, (916), 205 states have call predecessors, (916), 205 states have return successors, (916), 904 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-16 04:11:13,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 6382 transitions. [2023-12-16 04:11:13,425 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 6382 transitions. Word has length 475 [2023-12-16 04:11:13,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:11:13,425 INFO L495 AbstractCegarLoop]: Abstraction has 4491 states and 6382 transitions. [2023-12-16 04:11:13,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 8 states have call successors, (122), 6 states have call predecessors, (122), 12 states have return successors, (123), 8 states have call predecessors, (123), 8 states have call successors, (123) [2023-12-16 04:11:13,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 6382 transitions. [2023-12-16 04:11:13,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 04:11:13,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:11:13,429 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:11:13,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-16 04:11:13,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:13,639 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:11:13,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:11:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash 704391394, now seen corresponding path program 1 times [2023-12-16 04:11:13,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:11:13,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512877874] [2023-12-16 04:11:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:13,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:11:13,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:11:13,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320260937] [2023-12-16 04:11:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:13,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:13,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:11:13,679 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:11:13,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-16 04:11:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:11:14,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:11:14,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:11:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 3595 proven. 201 refuted. 0 times theorem prover too weak. 5316 trivial. 0 not checked. [2023-12-16 04:11:15,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:11:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-16 04:11:16,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:11:16,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512877874] [2023-12-16 04:11:16,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:11:16,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320260937] [2023-12-16 04:11:16,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320260937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:11:16,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:11:16,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 04:11:16,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696798915] [2023-12-16 04:11:16,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:11:16,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:11:16,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:11:16,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:11:16,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:11:16,048 INFO L87 Difference]: Start difference. First operand 4491 states and 6382 transitions. Second operand has 12 states, 12 states have (on average 20.583333333333332) internal successors, (247), 12 states have internal predecessors, (247), 5 states have call successors, (135), 3 states have call predecessors, (135), 5 states have return successors, (136), 4 states have call predecessors, (136), 5 states have call successors, (136) [2023-12-16 04:11:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:11:16,841 INFO L93 Difference]: Finished difference Result 9049 states and 12846 transitions. [2023-12-16 04:11:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:11:16,842 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), 5 states have call successors, (135), 3 states have call predecessors, (135), 5 states have return successors, (136), 4 states have call predecessors, (136), 5 states have call successors, (136) Word has length 475 [2023-12-16 04:11:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:11:16,854 INFO L225 Difference]: With dead ends: 9049 [2023-12-16 04:11:16,854 INFO L226 Difference]: Without dead ends: 5051 [2023-12-16 04:11:16,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 958 GetRequests, 939 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:11:16,861 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1071 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:11:16,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1340 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:11:16,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2023-12-16 04:11:17,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 4411. [2023-12-16 04:11:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4411 states, 3289 states have (on average 1.3456977804803891) internal successors, (4426), 3301 states have internal predecessors, (4426), 916 states have call successors, (916), 205 states have call predecessors, (916), 205 states have return successors, (916), 904 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-16 04:11:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4411 states to 4411 states and 6258 transitions. [2023-12-16 04:11:17,239 INFO L78 Accepts]: Start accepts. Automaton has 4411 states and 6258 transitions. Word has length 475 [2023-12-16 04:11:17,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:11:17,239 INFO L495 AbstractCegarLoop]: Abstraction has 4411 states and 6258 transitions. [2023-12-16 04:11:17,239 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), 5 states have call successors, (135), 3 states have call predecessors, (135), 5 states have return successors, (136), 4 states have call predecessors, (136), 5 states have call successors, (136) [2023-12-16 04:11:17,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4411 states and 6258 transitions. [2023-12-16 04:11:17,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 04:11:17,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:11:17,243 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:11:17,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-16 04:11:17,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:17,452 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:11:17,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:11:17,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2146610229, now seen corresponding path program 1 times [2023-12-16 04:11:17,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:11:17,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952460393] [2023-12-16 04:11:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:17,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:11:17,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:11:17,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010783980] [2023-12-16 04:11:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:17,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:17,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:11:17,491 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:11:17,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-16 04:11:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:11:17,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:11:17,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:11:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 591 proven. 195 refuted. 0 times theorem prover too weak. 8326 trivial. 0 not checked. [2023-12-16 04:11:19,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:11:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 6 proven. 195 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-16 04:11:19,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:11:19,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952460393] [2023-12-16 04:11:19,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:11:19,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010783980] [2023-12-16 04:11:19,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010783980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:11:19,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:11:19,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-16 04:11:19,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789872101] [2023-12-16 04:11:19,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:11:19,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:11:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:11:19,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:11:19,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:11:19,451 INFO L87 Difference]: Start difference. First operand 4411 states and 6258 transitions. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 4 states have call successors, (136), 3 states have call predecessors, (136), 5 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) [2023-12-16 04:11:20,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:11:20,204 INFO L93 Difference]: Finished difference Result 8491 states and 11956 transitions. [2023-12-16 04:11:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:11:20,206 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 4 states have call successors, (136), 3 states have call predecessors, (136), 5 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) Word has length 475 [2023-12-16 04:11:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:11:20,213 INFO L225 Difference]: With dead ends: 8491 [2023-12-16 04:11:20,213 INFO L226 Difference]: Without dead ends: 4573 [2023-12-16 04:11:20,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 940 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-12-16 04:11:20,217 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 998 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:11:20,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 812 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:11:20,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2023-12-16 04:11:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 4479. [2023-12-16 04:11:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 3340 states have (on average 1.33562874251497) internal successors, (4461), 3352 states have internal predecessors, (4461), 916 states have call successors, (916), 222 states have call predecessors, (916), 222 states have return successors, (916), 904 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-16 04:11:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6293 transitions. [2023-12-16 04:11:20,565 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6293 transitions. Word has length 475 [2023-12-16 04:11:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:11:20,566 INFO L495 AbstractCegarLoop]: Abstraction has 4479 states and 6293 transitions. [2023-12-16 04:11:20,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 4 states have call successors, (136), 3 states have call predecessors, (136), 5 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) [2023-12-16 04:11:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6293 transitions. [2023-12-16 04:11:20,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 04:11:20,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:11:20,570 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:11:20,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-16 04:11:20,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:20,778 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:11:20,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:11:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1725655241, now seen corresponding path program 1 times [2023-12-16 04:11:20,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:11:20,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770808418] [2023-12-16 04:11:20,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:20,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:11:20,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:11:20,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065095430] [2023-12-16 04:11:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:20,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:20,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:11:20,820 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:11:20,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-16 04:11:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:11:21,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:11:21,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:11:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 591 proven. 195 refuted. 0 times theorem prover too weak. 8326 trivial. 0 not checked. [2023-12-16 04:11:21,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:11:22,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:11:22,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770808418] [2023-12-16 04:11:22,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:11:22,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065095430] [2023-12-16 04:11:22,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065095430] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:11:22,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:11:22,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-16 04:11:22,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793971358] [2023-12-16 04:11:22,686 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 04:11:22,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:11:22,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:11:22,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:11:22,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:11:22,688 INFO L87 Difference]: Start difference. First operand 4479 states and 6293 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (68), 2 states have call predecessors, (68), 3 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2023-12-16 04:11:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:11:24,451 INFO L93 Difference]: Finished difference Result 8771 states and 12282 transitions. [2023-12-16 04:11:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:11:24,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (68), 2 states have call predecessors, (68), 3 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 475 [2023-12-16 04:11:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:11:24,461 INFO L225 Difference]: With dead ends: 8771 [2023-12-16 04:11:24,461 INFO L226 Difference]: Without dead ends: 4573 [2023-12-16 04:11:24,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:11:24,467 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 342 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:11:24,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1022 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 04:11:24,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2023-12-16 04:11:24,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 4479. [2023-12-16 04:11:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 3340 states have (on average 1.331437125748503) internal successors, (4447), 3352 states have internal predecessors, (4447), 916 states have call successors, (916), 222 states have call predecessors, (916), 222 states have return successors, (916), 904 states have call predecessors, (916), 916 states have call successors, (916) [2023-12-16 04:11:24,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6279 transitions. [2023-12-16 04:11:24,855 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6279 transitions. Word has length 475 [2023-12-16 04:11:24,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:11:24,855 INFO L495 AbstractCegarLoop]: Abstraction has 4479 states and 6279 transitions. [2023-12-16 04:11:24,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (68), 2 states have call predecessors, (68), 3 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2023-12-16 04:11:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6279 transitions. [2023-12-16 04:11:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-12-16 04:11:24,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:11:24,859 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:11:24,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-16 04:11:25,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:25,065 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:11:25,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:11:25,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1595246453, now seen corresponding path program 1 times [2023-12-16 04:11:25,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:11:25,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369283559] [2023-12-16 04:11:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:25,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:11:25,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:11:25,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884476789] [2023-12-16 04:11:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:11:25,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:25,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:11:25,105 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:11:25,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-16 04:11:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:11:25,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 04:11:25,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:11:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 5091 proven. 174 refuted. 0 times theorem prover too weak. 3847 trivial. 0 not checked. [2023-12-16 04:11:27,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:11:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-16 04:11:28,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:11:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369283559] [2023-12-16 04:11:28,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:11:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884476789] [2023-12-16 04:11:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884476789] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:11:28,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:11:28,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 26 [2023-12-16 04:11:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008052726] [2023-12-16 04:11:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:11:28,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:11:28,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:11:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:11:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2023-12-16 04:11:28,999 INFO L87 Difference]: Start difference. First operand 4479 states and 6279 transitions. Second operand has 14 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 2 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Received shutdown request... [2023-12-16 04:11:33,395 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:11:33,395 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:11:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-16 04:11:33,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=635, Invalid=3271, Unknown=0, NotChecked=0, Total=3906 [2023-12-16 04:11:33,484 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 2355 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2355 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:11:33,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2355 Valid, 3312 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 04:11:33,485 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:11:33,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-16 04:11:33,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:11:33,686 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (4479states) and FLOYD_HOARE automaton (currently 43 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (7101 states constructed, input type IntersectNwa). [2023-12-16 04:11:33,690 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:11:33,692 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:11:33,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:11:33 BoogieIcfgContainer [2023-12-16 04:11:33,693 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:11:33,693 INFO L158 Benchmark]: Toolchain (without parser) took 57546.81ms. Allocated memory was 314.6MB in the beginning and 1.2GB in the end (delta: 914.4MB). Free memory was 262.8MB in the beginning and 649.8MB in the end (delta: -387.0MB). Peak memory consumption was 528.2MB. Max. memory is 8.0GB. [2023-12-16 04:11:33,693 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 184.5MB. Free memory was 136.3MB in the beginning and 136.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:11:33,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.20ms. Allocated memory is still 314.6MB. Free memory was 262.5MB in the beginning and 224.0MB in the end (delta: 38.5MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-16 04:11:33,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 126.14ms. Allocated memory is still 314.6MB. Free memory was 224.0MB in the beginning and 266.6MB in the end (delta: -42.6MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2023-12-16 04:11:33,694 INFO L158 Benchmark]: Boogie Preprocessor took 147.23ms. Allocated memory is still 314.6MB. Free memory was 266.6MB in the beginning and 228.4MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-16 04:11:33,694 INFO L158 Benchmark]: RCFGBuilder took 1071.38ms. Allocated memory is still 314.6MB. Free memory was 228.4MB in the beginning and 216.8MB in the end (delta: 11.5MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. [2023-12-16 04:11:33,694 INFO L158 Benchmark]: TraceAbstraction took 55737.82ms. Allocated memory was 314.6MB in the beginning and 1.2GB in the end (delta: 914.4MB). Free memory was 216.3MB in the beginning and 649.8MB in the end (delta: -433.5MB). Peak memory consumption was 480.8MB. Max. memory is 8.0GB. [2023-12-16 04:11:33,695 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 184.5MB. Free memory was 136.3MB in the beginning and 136.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 459.20ms. Allocated memory is still 314.6MB. Free memory was 262.5MB in the beginning and 224.0MB in the end (delta: 38.5MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 126.14ms. Allocated memory is still 314.6MB. Free memory was 224.0MB in the beginning and 266.6MB in the end (delta: -42.6MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 147.23ms. Allocated memory is still 314.6MB. Free memory was 266.6MB in the beginning and 228.4MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * RCFGBuilder took 1071.38ms. Allocated memory is still 314.6MB. Free memory was 228.4MB in the beginning and 216.8MB in the end (delta: 11.5MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. * TraceAbstraction took 55737.82ms. Allocated memory was 314.6MB in the beginning and 1.2GB in the end (delta: 914.4MB). Free memory was 216.3MB in the beginning and 649.8MB in the end (delta: -433.5MB). Peak memory consumption was 480.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (4479states) and FLOYD_HOARE automaton (currently 43 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (7101 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 257 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.7s, OverallIterations: 24, TraceHistogramMax: 68, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 18.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21007 SdHoareTripleChecker+Valid, 11.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20864 mSDsluCounter, 32593 SdHoareTripleChecker+Invalid, 10.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22417 mSDsCounter, 3116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10812 IncrementalHoareTripleChecker+Invalid, 13928 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3116 mSolverCounterUnsat, 10176 mSDtfsCounter, 10812 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16759 GetRequests, 16427 SyntacticMatches, 6 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3882 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7016occurred in iteration=10, InterpolantAutomatonStates: 240, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 12018 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.6s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 11774 NumberOfCodeBlocks, 11774 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 16469 ConstructedInterpolants, 2 QuantifiedInterpolants, 61888 SizeOfPredicates, 97 NumberOfNonLiveVariables, 30287 ConjunctsInSsa, 216 ConjunctsInUnsatCore, 35 InterpolantComputations, 13 PerfectInterpolantSequences, 315416/318920 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