/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-13.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 13:33:25,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 13:33:25,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 13:33:25,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 13:33:25,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 13:33:25,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 13:33:25,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 13:33:25,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 13:33:25,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 13:33:25,911 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 13:33:25,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 13:33:25,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 13:33:25,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 13:33:25,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 13:33:25,920 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 13:33:25,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 13:33:25,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 13:33:25,921 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 13:33:25,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 13:33:25,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 13:33:25,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 13:33:25,925 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 13:33:25,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 13:33:25,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 13:33:25,925 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 13:33:25,926 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 13:33:25,926 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 13:33:25,926 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 13:33:25,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 13:33:25,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 13:33:25,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 13:33:25,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 13:33:25,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:33:25,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 13:33:25,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 13:33:25,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 13:33:25,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 13:33:25,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 13:33:25,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 13:33:25,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 13:33:25,929 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 13:33:25,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 13:33:25,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 13:33:25,930 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 13:33:26,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 13:33:26,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 13:33:26,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 13:33:26,189 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 13:33:26,189 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 13:33:26,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-13.i [2023-12-19 13:33:27,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 13:33:27,880 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 13:33:27,881 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-13.i [2023-12-19 13:33:27,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a1dac5ca/ffe177e35f374fd8956780faeb4c73e0/FLAG399994e59 [2023-12-19 13:33:27,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a1dac5ca/ffe177e35f374fd8956780faeb4c73e0 [2023-12-19 13:33:27,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 13:33:27,912 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 13:33:27,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 13:33:27,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 13:33:27,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 13:33:27,919 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:33:27" (1/1) ... [2023-12-19 13:33:27,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72260ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:27, skipping insertion in model container [2023-12-19 13:33:27,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:33:27" (1/1) ... [2023-12-19 13:33:27,971 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 13:33:28,096 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-13.i[916,929] [2023-12-19 13:33:28,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:33:28,355 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 13:33:28,366 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-13.i[916,929] [2023-12-19 13:33:28,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:33:28,547 INFO L206 MainTranslator]: Completed translation [2023-12-19 13:33:28,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28 WrapperNode [2023-12-19 13:33:28,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 13:33:28,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 13:33:28,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 13:33:28,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 13:33:28,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,696 INFO L138 Inliner]: procedures = 26, calls = 92, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 732 [2023-12-19 13:33:28,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 13:33:28,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 13:33:28,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 13:33:28,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 13:33:28,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,797 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]. [2023-12-19 13:33:28,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 13:33:28,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 13:33:28,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 13:33:28,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 13:33:28,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (1/1) ... [2023-12-19 13:33:28,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:33:28,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:28,919 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) [2023-12-19 13:33:28,931 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 [2023-12-19 13:33:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 13:33:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 13:33:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 13:33:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 13:33:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 13:33:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 13:33:29,104 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 13:33:29,106 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 13:33:30,044 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 13:33:30,112 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 13:33:30,112 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 13:33:30,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:33:30 BoogieIcfgContainer [2023-12-19 13:33:30,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 13:33:30,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 13:33:30,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 13:33:30,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 13:33:30,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:33:27" (1/3) ... [2023-12-19 13:33:30,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281e6ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:33:30, skipping insertion in model container [2023-12-19 13:33:30,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:28" (2/3) ... [2023-12-19 13:33:30,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281e6ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:33:30, skipping insertion in model container [2023-12-19 13:33:30,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:33:30" (3/3) ... [2023-12-19 13:33:30,121 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-13.i [2023-12-19 13:33:30,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 13:33:30,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 13:33:30,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 13:33:30,225 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;@26275841, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 13:33:30,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 13:33:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 197 states have (on average 1.5939086294416243) internal successors, (314), 198 states have internal predecessors, (314), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-19 13:33:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-19 13:33:30,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:30,279 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:30,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:30,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash -320492981, now seen corresponding path program 1 times [2023-12-19 13:33:30,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:30,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367892299] [2023-12-19 13:33:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:30,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:30,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:30,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212095734] [2023-12-19 13:33:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:30,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:30,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:30,625 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) [2023-12-19 13:33:30,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 13:33:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:31,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 13:33:31,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:33:31,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:33:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367892299] [2023-12-19 13:33:31,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212095734] [2023-12-19 13:33:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212095734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:33:31,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:33:31,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:33:31,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731034467] [2023-12-19 13:33:31,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:33:31,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:33:31,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:31,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:33:31,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:33:31,716 INFO L87 Difference]: Start difference. First operand has 279 states, 197 states have (on average 1.5939086294416243) internal successors, (314), 198 states have internal predecessors, (314), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:32,191 INFO L93 Difference]: Finished difference Result 828 states and 1565 transitions. [2023-12-19 13:33:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 13:33:32,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-12-19 13:33:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:32,217 INFO L225 Difference]: With dead ends: 828 [2023-12-19 13:33:32,217 INFO L226 Difference]: Without dead ends: 550 [2023-12-19 13:33:32,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:33:32,228 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 561 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:32,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1462 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:33:32,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-19 13:33:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 407. [2023-12-19 13:33:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 246 states have (on average 1.4552845528455285) internal successors, (358), 246 states have internal predecessors, (358), 158 states have call successors, (158), 2 states have call predecessors, (158), 2 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-19 13:33:32,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 674 transitions. [2023-12-19 13:33:32,328 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 674 transitions. Word has length 527 [2023-12-19 13:33:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:33:32,330 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 674 transitions. [2023-12-19 13:33:32,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 674 transitions. [2023-12-19 13:33:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-19 13:33:32,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:32,340 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:32,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 13:33:32,550 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 [2023-12-19 13:33:32,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:32,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:32,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1153846681, now seen corresponding path program 1 times [2023-12-19 13:33:32,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:32,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979188599] [2023-12-19 13:33:32,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:32,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:32,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:32,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425351428] [2023-12-19 13:33:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:32,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:32,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:32,647 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) [2023-12-19 13:33:32,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 13:33:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:32,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:33:33,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:33:33,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:33:33,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:33,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979188599] [2023-12-19 13:33:33,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:33,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425351428] [2023-12-19 13:33:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425351428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:33:33,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:33:33,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:33:33,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807829145] [2023-12-19 13:33:33,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:33:33,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:33:33,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:33:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:33:33,055 INFO L87 Difference]: Start difference. First operand 407 states and 674 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:33,146 INFO L93 Difference]: Finished difference Result 851 states and 1419 transitions. [2023-12-19 13:33:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:33:33,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 528 [2023-12-19 13:33:33,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:33,151 INFO L225 Difference]: With dead ends: 851 [2023-12-19 13:33:33,151 INFO L226 Difference]: Without dead ends: 577 [2023-12-19 13:33:33,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:33:33,153 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 263 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:33,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 890 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:33:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-12-19 13:33:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 574. [2023-12-19 13:33:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 395 states have (on average 1.5291139240506328) internal successors, (604), 396 states have internal predecessors, (604), 174 states have call successors, (174), 4 states have call predecessors, (174), 4 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-19 13:33:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 952 transitions. [2023-12-19 13:33:33,228 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 952 transitions. Word has length 528 [2023-12-19 13:33:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:33:33,235 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 952 transitions. [2023-12-19 13:33:33,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 952 transitions. [2023-12-19 13:33:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-19 13:33:33,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:33,244 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:33,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 13:33:33,452 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 [2023-12-19 13:33:33,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:33,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash 223740199, now seen corresponding path program 1 times [2023-12-19 13:33:33,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:33,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224411826] [2023-12-19 13:33:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:33,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:33,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:33,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285398030] [2023-12-19 13:33:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:33,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:33,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:33,559 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) [2023-12-19 13:33:33,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 13:33:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:33,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:33:33,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:33:33,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:33:33,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224411826] [2023-12-19 13:33:33,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:33,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285398030] [2023-12-19 13:33:33,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285398030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:33:33,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:33:33,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:33:33,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581432577] [2023-12-19 13:33:33,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:33:33,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:33:33,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:33,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:33:33,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:33:33,959 INFO L87 Difference]: Start difference. First operand 574 states and 952 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:38,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 13:33:42,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 13:33:42,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:42,109 INFO L93 Difference]: Finished difference Result 1442 states and 2413 transitions. [2023-12-19 13:33:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:33:42,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 528 [2023-12-19 13:33:42,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:42,116 INFO L225 Difference]: With dead ends: 1442 [2023-12-19 13:33:42,117 INFO L226 Difference]: Without dead ends: 1005 [2023-12-19 13:33:42,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:33:42,119 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 431 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:42,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 890 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2023-12-19 13:33:42,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2023-12-19 13:33:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1003. [2023-12-19 13:33:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 727 states have (on average 1.5515818431911967) internal successors, (1128), 729 states have internal predecessors, (1128), 269 states have call successors, (269), 6 states have call predecessors, (269), 6 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-12-19 13:33:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1666 transitions. [2023-12-19 13:33:42,211 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1666 transitions. Word has length 528 [2023-12-19 13:33:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:33:42,212 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1666 transitions. [2023-12-19 13:33:42,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1666 transitions. [2023-12-19 13:33:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-19 13:33:42,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:42,238 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:42,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 13:33:42,447 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 [2023-12-19 13:33:42,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:42,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1140340741, now seen corresponding path program 1 times [2023-12-19 13:33:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:42,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758155219] [2023-12-19 13:33:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:42,543 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:42,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842840106] [2023-12-19 13:33:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:42,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:42,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:42,545 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) [2023-12-19 13:33:42,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 13:33:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:42,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:33:42,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:33:42,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:33:42,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:42,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758155219] [2023-12-19 13:33:42,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:42,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842840106] [2023-12-19 13:33:42,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842840106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:33:42,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:33:42,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:33:42,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338501768] [2023-12-19 13:33:42,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:33:42,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:33:42,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:33:42,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:33:42,986 INFO L87 Difference]: Start difference. First operand 1003 states and 1666 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:43,116 INFO L93 Difference]: Finished difference Result 2673 states and 4460 transitions. [2023-12-19 13:33:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:33:43,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-19 13:33:43,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:43,126 INFO L225 Difference]: With dead ends: 2673 [2023-12-19 13:33:43,127 INFO L226 Difference]: Without dead ends: 1807 [2023-12-19 13:33:43,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:33:43,139 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 413 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:43,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 906 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:33:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2023-12-19 13:33:43,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1123. [2023-12-19 13:33:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 847 states have (on average 1.5820543093270365) internal successors, (1340), 849 states have internal predecessors, (1340), 269 states have call successors, (269), 6 states have call predecessors, (269), 6 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-12-19 13:33:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1878 transitions. [2023-12-19 13:33:43,312 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1878 transitions. Word has length 529 [2023-12-19 13:33:43,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:33:43,314 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1878 transitions. [2023-12-19 13:33:43,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:43,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1878 transitions. [2023-12-19 13:33:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-19 13:33:43,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:43,322 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:43,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 13:33:43,533 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 [2023-12-19 13:33:43,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:43,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash 296335239, now seen corresponding path program 1 times [2023-12-19 13:33:43,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:43,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693975978] [2023-12-19 13:33:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:43,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:43,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927414982] [2023-12-19 13:33:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:43,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:43,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:43,605 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) [2023-12-19 13:33:43,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 13:33:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:43,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 13:33:43,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:33:44,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:33:44,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:44,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693975978] [2023-12-19 13:33:44,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:44,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927414982] [2023-12-19 13:33:44,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927414982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:33:44,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:33:44,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:33:44,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583098270] [2023-12-19 13:33:44,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:33:44,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:33:44,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:33:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:33:44,089 INFO L87 Difference]: Start difference. First operand 1123 states and 1878 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:44,359 INFO L93 Difference]: Finished difference Result 3573 states and 5996 transitions. [2023-12-19 13:33:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:33:44,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-19 13:33:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:44,372 INFO L225 Difference]: With dead ends: 3573 [2023-12-19 13:33:44,372 INFO L226 Difference]: Without dead ends: 2587 [2023-12-19 13:33:44,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:33:44,376 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 685 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:44,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1184 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:33:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2023-12-19 13:33:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 1939. [2023-12-19 13:33:44,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1586 states have (on average 1.6128625472887768) internal successors, (2558), 1592 states have internal predecessors, (2558), 341 states have call successors, (341), 11 states have call predecessors, (341), 11 states have return successors, (341), 335 states have call predecessors, (341), 341 states have call successors, (341) [2023-12-19 13:33:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3240 transitions. [2023-12-19 13:33:44,489 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3240 transitions. Word has length 529 [2023-12-19 13:33:44,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:33:44,489 INFO L495 AbstractCegarLoop]: Abstraction has 1939 states and 3240 transitions. [2023-12-19 13:33:44,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3240 transitions. [2023-12-19 13:33:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-19 13:33:44,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:44,496 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:44,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 13:33:44,705 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 [2023-12-19 13:33:44,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:44,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash 857035017, now seen corresponding path program 1 times [2023-12-19 13:33:44,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:44,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363471780] [2023-12-19 13:33:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:44,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:44,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:44,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604309426] [2023-12-19 13:33:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:44,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:44,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:44,769 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) [2023-12-19 13:33:44,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 13:33:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:45,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 13:33:45,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:33:45,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:33:45,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:45,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363471780] [2023-12-19 13:33:45,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:45,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604309426] [2023-12-19 13:33:45,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604309426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:33:45,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:33:45,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:33:45,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784878098] [2023-12-19 13:33:45,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:33:45,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:33:45,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:45,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:33:45,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:33:45,489 INFO L87 Difference]: Start difference. First operand 1939 states and 3240 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:46,631 INFO L93 Difference]: Finished difference Result 8549 states and 14207 transitions. [2023-12-19 13:33:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 13:33:46,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-19 13:33:46,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:46,660 INFO L225 Difference]: With dead ends: 8549 [2023-12-19 13:33:46,660 INFO L226 Difference]: Without dead ends: 6751 [2023-12-19 13:33:46,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:33:46,667 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 2419 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:46,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2419 Valid, 2347 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 13:33:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2023-12-19 13:33:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 4356. [2023-12-19 13:33:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 3702 states have (on average 1.609670448406267) internal successors, (5959), 3720 states have internal predecessors, (5959), 625 states have call successors, (625), 28 states have call predecessors, (625), 28 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-19 13:33:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 7209 transitions. [2023-12-19 13:33:46,906 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 7209 transitions. Word has length 529 [2023-12-19 13:33:46,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:33:46,906 INFO L495 AbstractCegarLoop]: Abstraction has 4356 states and 7209 transitions. [2023-12-19 13:33:46,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:46,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 7209 transitions. [2023-12-19 13:33:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-19 13:33:46,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:46,916 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:46,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 13:33:47,126 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 [2023-12-19 13:33:47,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:47,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:47,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1171551093, now seen corresponding path program 1 times [2023-12-19 13:33:47,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:47,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889196682] [2023-12-19 13:33:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:47,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:47,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:47,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942171721] [2023-12-19 13:33:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:47,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:47,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:47,188 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) [2023-12-19 13:33:47,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 13:33:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:47,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:33:47,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 1128 proven. 9 refuted. 0 times theorem prover too weak. 11187 trivial. 0 not checked. [2023-12-19 13:33:47,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:33:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 225 proven. 9 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-19 13:33:48,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:48,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889196682] [2023-12-19 13:33:48,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:48,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942171721] [2023-12-19 13:33:48,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942171721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:33:48,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:33:48,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-19 13:33:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983723700] [2023-12-19 13:33:48,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:33:48,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 13:33:48,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:48,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 13:33:48,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-19 13:33:48,041 INFO L87 Difference]: Start difference. First operand 4356 states and 7209 transitions. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 2 states have call successors, (82), 2 states have call predecessors, (82), 4 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-19 13:33:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:49,665 INFO L93 Difference]: Finished difference Result 11708 states and 19248 transitions. [2023-12-19 13:33:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 13:33:49,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 2 states have call successors, (82), 2 states have call predecessors, (82), 4 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) Word has length 529 [2023-12-19 13:33:49,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:49,696 INFO L225 Difference]: With dead ends: 11708 [2023-12-19 13:33:49,696 INFO L226 Difference]: Without dead ends: 7497 [2023-12-19 13:33:49,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 1047 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2023-12-19 13:33:49,707 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1667 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:49,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 2765 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 13:33:49,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7497 states. [2023-12-19 13:33:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7497 to 4388. [2023-12-19 13:33:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 3731 states have (on average 1.6049316537121414) internal successors, (5988), 3749 states have internal predecessors, (5988), 625 states have call successors, (625), 31 states have call predecessors, (625), 31 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-19 13:33:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 7238 transitions. [2023-12-19 13:33:49,980 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 7238 transitions. Word has length 529 [2023-12-19 13:33:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:33:49,981 INFO L495 AbstractCegarLoop]: Abstraction has 4388 states and 7238 transitions. [2023-12-19 13:33:49,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 2 states have call successors, (82), 2 states have call predecessors, (82), 4 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-19 13:33:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 7238 transitions. [2023-12-19 13:33:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 13:33:49,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:49,990 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:50,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 13:33:50,200 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 [2023-12-19 13:33:50,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:50,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:50,201 INFO L85 PathProgramCache]: Analyzing trace with hash 251399868, now seen corresponding path program 1 times [2023-12-19 13:33:50,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:50,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864342307] [2023-12-19 13:33:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:50,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:50,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899878186] [2023-12-19 13:33:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:50,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:50,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:50,289 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) [2023-12-19 13:33:50,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 13:33:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:50,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:33:50,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 3378 proven. 36 refuted. 0 times theorem prover too weak. 8910 trivial. 0 not checked. [2023-12-19 13:33:50,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:33:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 198 proven. 36 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-19 13:33:51,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:51,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864342307] [2023-12-19 13:33:51,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:51,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899878186] [2023-12-19 13:33:51,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899878186] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:33:51,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:33:51,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:33:51,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032836526] [2023-12-19 13:33:51,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:33:51,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:33:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:33:51,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:33:51,086 INFO L87 Difference]: Start difference. First operand 4388 states and 7238 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-19 13:33:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:51,610 INFO L93 Difference]: Finished difference Result 8675 states and 14296 transitions. [2023-12-19 13:33:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 13:33:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 530 [2023-12-19 13:33:51,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:51,631 INFO L225 Difference]: With dead ends: 8675 [2023-12-19 13:33:51,631 INFO L226 Difference]: Without dead ends: 4436 [2023-12-19 13:33:51,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1052 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:33:51,642 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 344 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:51,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 961 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:33:51,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2023-12-19 13:33:51,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 4400. [2023-12-19 13:33:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 3740 states have (on average 1.5991978609625668) internal successors, (5981), 3758 states have internal predecessors, (5981), 625 states have call successors, (625), 34 states have call predecessors, (625), 34 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-19 13:33:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 7231 transitions. [2023-12-19 13:33:51,885 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 7231 transitions. Word has length 530 [2023-12-19 13:33:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:33:51,885 INFO L495 AbstractCegarLoop]: Abstraction has 4400 states and 7231 transitions. [2023-12-19 13:33:51,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-19 13:33:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 7231 transitions. [2023-12-19 13:33:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 13:33:51,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:51,895 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:51,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 13:33:52,104 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 [2023-12-19 13:33:52,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:52,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:52,105 INFO L85 PathProgramCache]: Analyzing trace with hash -241226306, now seen corresponding path program 1 times [2023-12-19 13:33:52,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:52,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206811559] [2023-12-19 13:33:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:52,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:52,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:52,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925831613] [2023-12-19 13:33:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:52,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:52,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:52,166 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) [2023-12-19 13:33:52,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 13:33:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:52,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:33:52,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6220 proven. 123 refuted. 0 times theorem prover too weak. 5981 trivial. 0 not checked. [2023-12-19 13:33:52,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:33:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 111 proven. 123 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-19 13:33:53,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206811559] [2023-12-19 13:33:53,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925831613] [2023-12-19 13:33:53,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925831613] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:33:53,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:33:53,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 13:33:53,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770797170] [2023-12-19 13:33:53,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:33:53,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:33:53,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:33:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:33:53,279 INFO L87 Difference]: Start difference. First operand 4400 states and 7231 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2023-12-19 13:33:54,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:54,294 INFO L93 Difference]: Finished difference Result 8330 states and 13662 transitions. [2023-12-19 13:33:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 13:33:54,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) Word has length 530 [2023-12-19 13:33:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:54,327 INFO L225 Difference]: With dead ends: 8330 [2023-12-19 13:33:54,327 INFO L226 Difference]: Without dead ends: 4083 [2023-12-19 13:33:54,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 1051 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-19 13:33:54,336 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 583 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:54,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 1517 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 13:33:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2023-12-19 13:33:54,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 3780. [2023-12-19 13:33:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3117 states have (on average 1.5572666025024062) internal successors, (4854), 3135 states have internal predecessors, (4854), 625 states have call successors, (625), 37 states have call predecessors, (625), 37 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-19 13:33:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 6104 transitions. [2023-12-19 13:33:54,589 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 6104 transitions. Word has length 530 [2023-12-19 13:33:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:33:54,590 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 6104 transitions. [2023-12-19 13:33:54,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2023-12-19 13:33:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 6104 transitions. [2023-12-19 13:33:54,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 13:33:54,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:54,598 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:54,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 13:33:54,808 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 [2023-12-19 13:33:54,809 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:54,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:54,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1623083291, now seen corresponding path program 1 times [2023-12-19 13:33:54,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:54,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979410412] [2023-12-19 13:33:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:54,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:54,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:54,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864895847] [2023-12-19 13:33:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:54,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:54,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:54,869 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) [2023-12-19 13:33:54,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 13:33:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:55,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 13:33:55,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:33:55,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:33:55,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:55,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979410412] [2023-12-19 13:33:55,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:55,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864895847] [2023-12-19 13:33:55,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864895847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:33:55,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:33:55,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 13:33:55,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237361887] [2023-12-19 13:33:55,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:33:55,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:33:55,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:33:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:33:55,335 INFO L87 Difference]: Start difference. First operand 3780 states and 6104 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:56,505 INFO L93 Difference]: Finished difference Result 12526 states and 20307 transitions. [2023-12-19 13:33:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 13:33:56,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-12-19 13:33:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:56,530 INFO L225 Difference]: With dead ends: 12526 [2023-12-19 13:33:56,531 INFO L226 Difference]: Without dead ends: 8903 [2023-12-19 13:33:56,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:33:56,540 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 1475 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:56,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1986 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 13:33:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2023-12-19 13:33:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 7797. [2023-12-19 13:33:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7797 states, 6558 states have (on average 1.5661787130222629) internal successors, (10271), 6594 states have internal predecessors, (10271), 1171 states have call successors, (1171), 67 states have call predecessors, (1171), 67 states have return successors, (1171), 1135 states have call predecessors, (1171), 1171 states have call successors, (1171) [2023-12-19 13:33:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7797 states to 7797 states and 12613 transitions. [2023-12-19 13:33:57,017 INFO L78 Accepts]: Start accepts. Automaton has 7797 states and 12613 transitions. Word has length 530 [2023-12-19 13:33:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:33:57,018 INFO L495 AbstractCegarLoop]: Abstraction has 7797 states and 12613 transitions. [2023-12-19 13:33:57,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 7797 states and 12613 transitions. [2023-12-19 13:33:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 13:33:57,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:33:57,032 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:33:57,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 13:33:57,241 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 [2023-12-19 13:33:57,242 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:33:57,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:33:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1672752279, now seen corresponding path program 1 times [2023-12-19 13:33:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:33:57,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079825085] [2023-12-19 13:33:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:33:57,333 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:33:57,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263236966] [2023-12-19 13:33:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:33:57,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:33:57,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:33:57,343 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) [2023-12-19 13:33:57,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 13:33:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:33:57,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 13:33:57,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:33:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:33:58,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:33:58,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:33:58,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079825085] [2023-12-19 13:33:58,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:33:58,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263236966] [2023-12-19 13:33:58,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263236966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:33:58,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:33:58,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:33:58,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259824205] [2023-12-19 13:33:58,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:33:58,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:33:58,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:33:58,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:33:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:33:58,870 INFO L87 Difference]: Start difference. First operand 7797 states and 12613 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:33:59,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:33:59,559 INFO L93 Difference]: Finished difference Result 18109 states and 29366 transitions. [2023-12-19 13:33:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:33:59,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-12-19 13:33:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:33:59,591 INFO L225 Difference]: With dead ends: 18109 [2023-12-19 13:33:59,591 INFO L226 Difference]: Without dead ends: 10469 [2023-12-19 13:33:59,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:33:59,609 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 307 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:33:59,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1329 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:33:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10469 states. [2023-12-19 13:34:00,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10469 to 7843. [2023-12-19 13:34:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7843 states, 6604 states have (on average 1.5645063597819504) internal successors, (10332), 6640 states have internal predecessors, (10332), 1171 states have call successors, (1171), 67 states have call predecessors, (1171), 67 states have return successors, (1171), 1135 states have call predecessors, (1171), 1171 states have call successors, (1171) [2023-12-19 13:34:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7843 states to 7843 states and 12674 transitions. [2023-12-19 13:34:00,196 INFO L78 Accepts]: Start accepts. Automaton has 7843 states and 12674 transitions. Word has length 530 [2023-12-19 13:34:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:34:00,197 INFO L495 AbstractCegarLoop]: Abstraction has 7843 states and 12674 transitions. [2023-12-19 13:34:00,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:34:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7843 states and 12674 transitions. [2023-12-19 13:34:00,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 13:34:00,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:34:00,205 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:34:00,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 13:34:00,415 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 [2023-12-19 13:34:00,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:34:00,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:34:00,416 INFO L85 PathProgramCache]: Analyzing trace with hash -56325341, now seen corresponding path program 1 times [2023-12-19 13:34:00,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:34:00,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83123311] [2023-12-19 13:34:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:00,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:34:00,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:34:00,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408560454] [2023-12-19 13:34:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:00,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:34:00,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:34:00,471 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) [2023-12-19 13:34:00,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 13:34:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:34:00,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 13:34:00,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:34:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:34:02,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:34:02,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:34:02,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83123311] [2023-12-19 13:34:02,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:34:02,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408560454] [2023-12-19 13:34:02,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408560454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:34:02,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:34:02,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 13:34:02,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008524310] [2023-12-19 13:34:02,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:34:02,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 13:34:02,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:34:02,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 13:34:02,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 13:34:02,214 INFO L87 Difference]: Start difference. First operand 7843 states and 12674 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 9 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:34:08,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 13:34:12,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 13:34:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:34:13,663 INFO L93 Difference]: Finished difference Result 23833 states and 38408 transitions. [2023-12-19 13:34:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 13:34:13,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 9 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-12-19 13:34:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:34:13,706 INFO L225 Difference]: With dead ends: 23833 [2023-12-19 13:34:13,706 INFO L226 Difference]: Without dead ends: 16161 [2023-12-19 13:34:13,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2023-12-19 13:34:13,723 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 5166 mSDsluCounter, 3816 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 1612 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 4567 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1612 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:34:13,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5166 Valid, 4567 Invalid, 3227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1612 Valid, 1613 Invalid, 2 Unknown, 0 Unchecked, 10.5s Time] [2023-12-19 13:34:13,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16161 states. [2023-12-19 13:34:14,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16161 to 8833. [2023-12-19 13:34:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8833 states, 7284 states have (on average 1.5488742449203734) internal successors, (11282), 7324 states have internal predecessors, (11282), 1457 states have call successors, (1457), 91 states have call predecessors, (1457), 91 states have return successors, (1457), 1417 states have call predecessors, (1457), 1457 states have call successors, (1457) [2023-12-19 13:34:14,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8833 states to 8833 states and 14196 transitions. [2023-12-19 13:34:14,468 INFO L78 Accepts]: Start accepts. Automaton has 8833 states and 14196 transitions. Word has length 530 [2023-12-19 13:34:14,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:34:14,469 INFO L495 AbstractCegarLoop]: Abstraction has 8833 states and 14196 transitions. [2023-12-19 13:34:14,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 9 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:34:14,469 INFO L276 IsEmpty]: Start isEmpty. Operand 8833 states and 14196 transitions. [2023-12-19 13:34:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 13:34:14,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:34:14,478 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:34:14,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 13:34:14,688 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 [2023-12-19 13:34:14,689 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:34:14,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:34:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1091383391, now seen corresponding path program 1 times [2023-12-19 13:34:14,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:34:14,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740499513] [2023-12-19 13:34:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:14,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:34:14,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:34:14,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500999457] [2023-12-19 13:34:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:14,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:34:14,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:34:14,740 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) [2023-12-19 13:34:14,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 13:34:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:34:15,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 13:34:15,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:34:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:34:15,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:34:15,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:34:15,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740499513] [2023-12-19 13:34:15,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:34:15,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500999457] [2023-12-19 13:34:15,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500999457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:34:15,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:34:15,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 13:34:15,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448015287] [2023-12-19 13:34:15,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:34:15,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:34:15,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:34:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:34:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:34:15,585 INFO L87 Difference]: Start difference. First operand 8833 states and 14196 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:34:16,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:34:16,491 INFO L93 Difference]: Finished difference Result 27030 states and 43686 transitions. [2023-12-19 13:34:16,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 13:34:16,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-12-19 13:34:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:34:16,535 INFO L225 Difference]: With dead ends: 27030 [2023-12-19 13:34:16,535 INFO L226 Difference]: Without dead ends: 18400 [2023-12-19 13:34:16,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:34:16,559 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 1087 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:34:16,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 2251 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:34:16,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18400 states. [2023-12-19 13:34:17,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18400 to 9285. [2023-12-19 13:34:17,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9285 states, 7736 states have (on average 1.5484746639089968) internal successors, (11979), 7776 states have internal predecessors, (11979), 1457 states have call successors, (1457), 91 states have call predecessors, (1457), 91 states have return successors, (1457), 1417 states have call predecessors, (1457), 1457 states have call successors, (1457) [2023-12-19 13:34:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9285 states to 9285 states and 14893 transitions. [2023-12-19 13:34:17,282 INFO L78 Accepts]: Start accepts. Automaton has 9285 states and 14893 transitions. Word has length 530 [2023-12-19 13:34:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:34:17,283 INFO L495 AbstractCegarLoop]: Abstraction has 9285 states and 14893 transitions. [2023-12-19 13:34:17,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:34:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand 9285 states and 14893 transitions. [2023-12-19 13:34:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 13:34:17,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:34:17,320 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:34:17,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 13:34:17,529 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 [2023-12-19 13:34:17,532 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:34:17,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:34:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash 169533859, now seen corresponding path program 1 times [2023-12-19 13:34:17,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:34:17,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727910930] [2023-12-19 13:34:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:17,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:34:17,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:34:17,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782505651] [2023-12-19 13:34:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:17,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:34:17,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:34:17,579 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) [2023-12-19 13:34:17,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 13:34:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:34:17,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 13:34:17,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:34:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6168 proven. 129 refuted. 0 times theorem prover too weak. 6027 trivial. 0 not checked. [2023-12-19 13:34:18,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:34:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 105 proven. 129 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-19 13:34:18,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:34:18,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727910930] [2023-12-19 13:34:18,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:34:18,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782505651] [2023-12-19 13:34:18,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782505651] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:34:18,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:34:18,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2023-12-19 13:34:18,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566132811] [2023-12-19 13:34:18,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:34:18,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 13:34:18,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:34:18,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 13:34:18,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 13:34:18,612 INFO L87 Difference]: Start difference. First operand 9285 states and 14893 transitions. Second operand has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-19 13:34:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:34:22,226 INFO L93 Difference]: Finished difference Result 33125 states and 53359 transitions. [2023-12-19 13:34:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-19 13:34:22,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 530 [2023-12-19 13:34:22,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:34:22,287 INFO L225 Difference]: With dead ends: 33125 [2023-12-19 13:34:22,287 INFO L226 Difference]: Without dead ends: 24043 [2023-12-19 13:34:22,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1100 GetRequests, 1054 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2023-12-19 13:34:22,305 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 3035 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 1212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3108 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1212 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:34:22,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3108 Valid, 2499 Invalid, 2608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1212 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 13:34:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24043 states. [2023-12-19 13:34:23,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24043 to 14265. [2023-12-19 13:34:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14265 states, 12581 states have (on average 1.5873142039583499) internal successors, (19970), 12627 states have internal predecessors, (19970), 1585 states have call successors, (1585), 98 states have call predecessors, (1585), 98 states have return successors, (1585), 1539 states have call predecessors, (1585), 1585 states have call successors, (1585) [2023-12-19 13:34:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14265 states to 14265 states and 23140 transitions. [2023-12-19 13:34:23,418 INFO L78 Accepts]: Start accepts. Automaton has 14265 states and 23140 transitions. Word has length 530 [2023-12-19 13:34:23,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:34:23,418 INFO L495 AbstractCegarLoop]: Abstraction has 14265 states and 23140 transitions. [2023-12-19 13:34:23,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-19 13:34:23,419 INFO L276 IsEmpty]: Start isEmpty. Operand 14265 states and 23140 transitions. [2023-12-19 13:34:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-19 13:34:23,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:34:23,438 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:34:23,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 13:34:23,648 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 [2023-12-19 13:34:23,649 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:34:23,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:34:23,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2114495787, now seen corresponding path program 1 times [2023-12-19 13:34:23,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:34:23,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720044827] [2023-12-19 13:34:23,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:23,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:34:23,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:34:23,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598007675] [2023-12-19 13:34:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:23,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:34:23,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:34:23,804 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) [2023-12-19 13:34:23,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 13:34:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:34:24,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 13:34:24,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:34:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5898 proven. 144 refuted. 0 times theorem prover too weak. 6282 trivial. 0 not checked. [2023-12-19 13:34:25,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:34:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-19 13:34:25,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:34:25,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720044827] [2023-12-19 13:34:25,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:34:25,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598007675] [2023-12-19 13:34:25,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598007675] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:34:25,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:34:25,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-12-19 13:34:25,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079267765] [2023-12-19 13:34:25,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:34:25,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 13:34:25,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:34:25,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 13:34:25,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-19 13:34:25,912 INFO L87 Difference]: Start difference. First operand 14265 states and 23140 transitions. Second operand has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) [2023-12-19 13:34:30,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 13:34:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:34:31,953 INFO L93 Difference]: Finished difference Result 47317 states and 76859 transitions. [2023-12-19 13:34:31,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 13:34:31,955 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) Word has length 531 [2023-12-19 13:34:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:34:32,023 INFO L225 Difference]: With dead ends: 47317 [2023-12-19 13:34:32,023 INFO L226 Difference]: Without dead ends: 33259 [2023-12-19 13:34:32,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-12-19 13:34:32,046 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1555 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 418 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:34:32,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 3313 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1302 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2023-12-19 13:34:32,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33259 states. [2023-12-19 13:34:33,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33259 to 26494. [2023-12-19 13:34:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26494 states, 23708 states have (on average 1.5930065800573645) internal successors, (37767), 23804 states have internal predecessors, (37767), 2619 states have call successors, (2619), 166 states have call predecessors, (2619), 166 states have return successors, (2619), 2523 states have call predecessors, (2619), 2619 states have call successors, (2619) [2023-12-19 13:34:33,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26494 states to 26494 states and 43005 transitions. [2023-12-19 13:34:33,354 INFO L78 Accepts]: Start accepts. Automaton has 26494 states and 43005 transitions. Word has length 531 [2023-12-19 13:34:33,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:34:33,358 INFO L495 AbstractCegarLoop]: Abstraction has 26494 states and 43005 transitions. [2023-12-19 13:34:33,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) [2023-12-19 13:34:33,358 INFO L276 IsEmpty]: Start isEmpty. Operand 26494 states and 43005 transitions. [2023-12-19 13:34:33,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-19 13:34:33,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:34:33,374 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:34:33,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 13:34:33,583 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 [2023-12-19 13:34:33,585 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:34:33,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:34:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1905711895, now seen corresponding path program 1 times [2023-12-19 13:34:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:34:33,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138263974] [2023-12-19 13:34:33,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:33,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:34:33,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:34:33,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205618001] [2023-12-19 13:34:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:33,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:34:33,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:34:33,648 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) [2023-12-19 13:34:33,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 13:34:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:34:34,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:34:34,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:34:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 4834 proven. 60 refuted. 0 times theorem prover too weak. 7430 trivial. 0 not checked. [2023-12-19 13:34:34,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:34:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 174 proven. 60 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-19 13:34:34,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:34:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138263974] [2023-12-19 13:34:34,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:34:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205618001] [2023-12-19 13:34:34,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205618001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:34:34,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:34:34,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-19 13:34:34,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603320104] [2023-12-19 13:34:34,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:34:34,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 13:34:34,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:34:34,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 13:34:34,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:34:34,606 INFO L87 Difference]: Start difference. First operand 26494 states and 43005 transitions. Second operand has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-12-19 13:34:37,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:34:37,071 INFO L93 Difference]: Finished difference Result 79703 states and 129298 transitions. [2023-12-19 13:34:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 13:34:37,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) Word has length 531 [2023-12-19 13:34:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:34:37,170 INFO L225 Difference]: With dead ends: 79703 [2023-12-19 13:34:37,170 INFO L226 Difference]: Without dead ends: 53420 [2023-12-19 13:34:37,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 1051 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-12-19 13:34:37,207 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 878 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:34:37,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 2811 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 13:34:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53420 states. [2023-12-19 13:34:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53420 to 27880. [2023-12-19 13:34:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27880 states, 25085 states have (on average 1.581383296790911) internal successors, (39669), 25181 states have internal predecessors, (39669), 2619 states have call successors, (2619), 175 states have call predecessors, (2619), 175 states have return successors, (2619), 2523 states have call predecessors, (2619), 2619 states have call successors, (2619) [2023-12-19 13:34:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27880 states to 27880 states and 44907 transitions. [2023-12-19 13:34:39,092 INFO L78 Accepts]: Start accepts. Automaton has 27880 states and 44907 transitions. Word has length 531 [2023-12-19 13:34:39,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:34:39,093 INFO L495 AbstractCegarLoop]: Abstraction has 27880 states and 44907 transitions. [2023-12-19 13:34:39,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-12-19 13:34:39,094 INFO L276 IsEmpty]: Start isEmpty. Operand 27880 states and 44907 transitions. [2023-12-19 13:34:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-19 13:34:39,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:34:39,107 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:34:39,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 13:34:39,317 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 [2023-12-19 13:34:39,318 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:34:39,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:34:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash -518926485, now seen corresponding path program 1 times [2023-12-19 13:34:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:34:39,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674003930] [2023-12-19 13:34:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:39,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:34:39,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:34:39,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984369019] [2023-12-19 13:34:39,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:39,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:34:39,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:34:39,372 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) [2023-12-19 13:34:39,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 13:34:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:34:39,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 13:34:39,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:34:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 8094 proven. 354 refuted. 0 times theorem prover too weak. 3876 trivial. 0 not checked. [2023-12-19 13:34:40,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:34:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 330 proven. 363 refuted. 0 times theorem prover too weak. 11631 trivial. 0 not checked. [2023-12-19 13:34:41,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:34:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674003930] [2023-12-19 13:34:41,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:34:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984369019] [2023-12-19 13:34:41,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984369019] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:34:41,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:34:41,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-19 13:34:41,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335974694] [2023-12-19 13:34:41,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:34:41,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 13:34:41,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:34:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 13:34:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-12-19 13:34:41,417 INFO L87 Difference]: Start difference. First operand 27880 states and 44907 transitions. Second operand has 26 states, 25 states have (on average 9.56) internal successors, (239), 24 states have internal predecessors, (239), 7 states have call successors, (135), 4 states have call predecessors, (135), 9 states have return successors, (136), 7 states have call predecessors, (136), 7 states have call successors, (136) [2023-12-19 13:34:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:34:54,833 INFO L93 Difference]: Finished difference Result 214117 states and 343169 transitions. [2023-12-19 13:34:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-12-19 13:34:54,834 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 9.56) internal successors, (239), 24 states have internal predecessors, (239), 7 states have call successors, (135), 4 states have call predecessors, (135), 9 states have return successors, (136), 7 states have call predecessors, (136), 7 states have call successors, (136) Word has length 531 [2023-12-19 13:34:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:34:55,221 INFO L225 Difference]: With dead ends: 214117 [2023-12-19 13:34:55,222 INFO L226 Difference]: Without dead ends: 186452 [2023-12-19 13:34:55,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1052 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4962 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3063, Invalid=11699, Unknown=0, NotChecked=0, Total=14762 [2023-12-19 13:34:55,290 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 8147 mSDsluCounter, 4552 mSDsCounter, 0 mSdLazyCounter, 4657 mSolverCounterSat, 1823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8169 SdHoareTripleChecker+Valid, 5308 SdHoareTripleChecker+Invalid, 6480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1823 IncrementalHoareTripleChecker+Valid, 4657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:34:55,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8169 Valid, 5308 Invalid, 6480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1823 Valid, 4657 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 13:34:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186452 states. [2023-12-19 13:34:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186452 to 62102. [2023-12-19 13:34:59,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62102 states, 56610 states have (on average 1.5682741565094507) internal successors, (88780), 56802 states have internal predecessors, (88780), 5027 states have call successors, (5027), 464 states have call predecessors, (5027), 464 states have return successors, (5027), 4835 states have call predecessors, (5027), 5027 states have call successors, (5027) [2023-12-19 13:34:59,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62102 states to 62102 states and 98834 transitions. [2023-12-19 13:34:59,471 INFO L78 Accepts]: Start accepts. Automaton has 62102 states and 98834 transitions. Word has length 531 [2023-12-19 13:34:59,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:34:59,472 INFO L495 AbstractCegarLoop]: Abstraction has 62102 states and 98834 transitions. [2023-12-19 13:34:59,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 9.56) internal successors, (239), 24 states have internal predecessors, (239), 7 states have call successors, (135), 4 states have call predecessors, (135), 9 states have return successors, (136), 7 states have call predecessors, (136), 7 states have call successors, (136) [2023-12-19 13:34:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 62102 states and 98834 transitions. [2023-12-19 13:34:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-19 13:34:59,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:34:59,498 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:34:59,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-19 13:34:59,698 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 [2023-12-19 13:34:59,699 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:34:59,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:34:59,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1698703913, now seen corresponding path program 1 times [2023-12-19 13:34:59,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:34:59,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640935175] [2023-12-19 13:34:59,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:59,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:34:59,745 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:34:59,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072507062] [2023-12-19 13:34:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:34:59,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:34:59,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:34:59,747 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) [2023-12-19 13:34:59,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 13:35:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:35:00,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 13:35:00,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:35:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7643 proven. 261 refuted. 0 times theorem prover too weak. 4420 trivial. 0 not checked. [2023-12-19 13:35:01,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:35:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 123 proven. 111 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-19 13:35:01,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:35:01,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640935175] [2023-12-19 13:35:01,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:35:01,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072507062] [2023-12-19 13:35:01,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072507062] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:35:01,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:35:01,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 25 [2023-12-19 13:35:01,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615144420] [2023-12-19 13:35:01,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:35:01,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 13:35:01,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:35:01,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 13:35:01,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-12-19 13:35:01,974 INFO L87 Difference]: Start difference. First operand 62102 states and 98834 transitions. Second operand has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2023-12-19 13:35:08,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 13:35:24,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:35:24,547 INFO L93 Difference]: Finished difference Result 414150 states and 664676 transitions. [2023-12-19 13:35:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-19 13:35:24,548 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), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) Word has length 531 [2023-12-19 13:35:24,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:35:25,447 INFO L225 Difference]: With dead ends: 414150 [2023-12-19 13:35:25,447 INFO L226 Difference]: Without dead ends: 352327 [2023-12-19 13:35:25,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1044 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1715 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1594, Invalid=5048, Unknown=0, NotChecked=0, Total=6642 [2023-12-19 13:35:25,557 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 5918 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 1822 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5945 SdHoareTripleChecker+Valid, 4777 SdHoareTripleChecker+Invalid, 5602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1822 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:35:25,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5945 Valid, 4777 Invalid, 5602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1822 Valid, 3779 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2023-12-19 13:35:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352327 states. [2023-12-19 13:35:31,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352327 to 172238. [2023-12-19 13:35:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172238 states, 166562 states have (on average 1.6130630035662397) internal successors, (268675), 166754 states have internal predecessors, (268675), 5007 states have call successors, (5007), 668 states have call predecessors, (5007), 668 states have return successors, (5007), 4815 states have call predecessors, (5007), 5007 states have call successors, (5007) [2023-12-19 13:35:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172238 states to 172238 states and 278689 transitions. [2023-12-19 13:35:32,327 INFO L78 Accepts]: Start accepts. Automaton has 172238 states and 278689 transitions. Word has length 531 [2023-12-19 13:35:32,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:35:32,327 INFO L495 AbstractCegarLoop]: Abstraction has 172238 states and 278689 transitions. [2023-12-19 13:35:32,328 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), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2023-12-19 13:35:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 172238 states and 278689 transitions. [2023-12-19 13:35:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-19 13:35:32,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:35:32,373 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:35:32,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 13:35:32,583 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 [2023-12-19 13:35:32,584 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:35:32,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:35:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash -359390574, now seen corresponding path program 1 times [2023-12-19 13:35:32,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:35:32,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124638541] [2023-12-19 13:35:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:35:32,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:35:32,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:35:32,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457230390] [2023-12-19 13:35:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:35:32,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:35:32,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:35:32,632 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) [2023-12-19 13:35:32,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 13:35:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:35:33,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 13:35:33,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:35:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:35:34,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:35:34,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:35:34,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124638541] [2023-12-19 13:35:34,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:35:34,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457230390] [2023-12-19 13:35:34,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457230390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:35:34,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:35:34,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:35:34,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919623018] [2023-12-19 13:35:34,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:35:34,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:35:34,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:35:34,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:35:34,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:35:34,142 INFO L87 Difference]: Start difference. First operand 172238 states and 278689 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:35:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:35:38,872 INFO L93 Difference]: Finished difference Result 387758 states and 627044 transitions. [2023-12-19 13:35:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:35:38,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 532 [2023-12-19 13:35:38,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:35:39,207 INFO L225 Difference]: With dead ends: 387758 [2023-12-19 13:35:39,207 INFO L226 Difference]: Without dead ends: 215823 [2023-12-19 13:35:39,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:35:39,285 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 521 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:35:39,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1490 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:35:39,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215823 states. [2023-12-19 13:35:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215823 to 186358. [2023-12-19 13:35:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186358 states, 180182 states have (on average 1.6112319765570369) internal successors, (290315), 180388 states have internal predecessors, (290315), 5443 states have call successors, (5443), 732 states have call predecessors, (5443), 732 states have return successors, (5443), 5237 states have call predecessors, (5443), 5443 states have call successors, (5443) [2023-12-19 13:35:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186358 states to 186358 states and 301201 transitions. [2023-12-19 13:35:44,762 INFO L78 Accepts]: Start accepts. Automaton has 186358 states and 301201 transitions. Word has length 532 [2023-12-19 13:35:44,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:35:44,762 INFO L495 AbstractCegarLoop]: Abstraction has 186358 states and 301201 transitions. [2023-12-19 13:35:44,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:35:44,763 INFO L276 IsEmpty]: Start isEmpty. Operand 186358 states and 301201 transitions. [2023-12-19 13:35:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-19 13:35:45,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:35:45,113 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:35:45,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 13:35:45,313 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 [2023-12-19 13:35:45,314 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:35:45,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:35:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1143195092, now seen corresponding path program 1 times [2023-12-19 13:35:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:35:45,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81085858] [2023-12-19 13:35:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:35:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:35:45,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:35:45,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036934492] [2023-12-19 13:35:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:35:45,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:35:45,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:35:45,367 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) [2023-12-19 13:35:45,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 13:35:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:35:45,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 13:35:45,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:35:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7643 proven. 261 refuted. 0 times theorem prover too weak. 4420 trivial. 0 not checked. [2023-12-19 13:35:46,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:35:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 123 proven. 111 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-19 13:35:47,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:35:47,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81085858] [2023-12-19 13:35:47,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:35:47,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036934492] [2023-12-19 13:35:47,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036934492] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:35:47,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:35:47,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-12-19 13:35:47,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101980657] [2023-12-19 13:35:47,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:35:47,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-19 13:35:47,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:35:47,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-19 13:35:47,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-12-19 13:35:47,330 INFO L87 Difference]: Start difference. First operand 186358 states and 301201 transitions. Second operand has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 19 states have internal predecessors, (225), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2023-12-19 13:35:53,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 13:35:57,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 13:36:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:36:10,228 INFO L93 Difference]: Finished difference Result 398530 states and 631001 transitions. [2023-12-19 13:36:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-19 13:36:10,229 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 19 states have internal predecessors, (225), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) Word has length 532 [2023-12-19 13:36:10,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:36:10,685 INFO L225 Difference]: With dead ends: 398530 [2023-12-19 13:36:10,686 INFO L226 Difference]: Without dead ends: 212561 [2023-12-19 13:36:10,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=760, Invalid=1996, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 13:36:10,776 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 3444 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 1443 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3446 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1443 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:36:10,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3446 Valid, 2442 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1443 Valid, 2260 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2023-12-19 13:36:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212561 states. [2023-12-19 13:36:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212561 to 111311. [2023-12-19 13:36:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111311 states, 105135 states have (on average 1.5719979074523232) internal successors, (165272), 105341 states have internal predecessors, (165272), 5443 states have call successors, (5443), 732 states have call predecessors, (5443), 732 states have return successors, (5443), 5237 states have call predecessors, (5443), 5443 states have call successors, (5443) [2023-12-19 13:36:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111311 states to 111311 states and 176158 transitions. [2023-12-19 13:36:16,179 INFO L78 Accepts]: Start accepts. Automaton has 111311 states and 176158 transitions. Word has length 532 [2023-12-19 13:36:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:36:16,180 INFO L495 AbstractCegarLoop]: Abstraction has 111311 states and 176158 transitions. [2023-12-19 13:36:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 19 states have internal predecessors, (225), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2023-12-19 13:36:16,181 INFO L276 IsEmpty]: Start isEmpty. Operand 111311 states and 176158 transitions. [2023-12-19 13:36:16,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-19 13:36:16,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:36:16,213 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:36:16,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 13:36:16,422 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 [2023-12-19 13:36:16,423 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:36:16,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:36:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash 519052961, now seen corresponding path program 1 times [2023-12-19 13:36:16,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:36:16,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444439685] [2023-12-19 13:36:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:36:16,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:36:16,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:36:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153170518] [2023-12-19 13:36:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:36:16,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:36:16,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:36:16,479 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) [2023-12-19 13:36:16,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 13:36:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:36:17,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 13:36:17,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:36:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7788 proven. 651 refuted. 0 times theorem prover too weak. 3885 trivial. 0 not checked. [2023-12-19 13:36:18,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:36:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 195 proven. 270 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-12-19 13:36:19,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:36:19,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444439685] [2023-12-19 13:36:19,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:36:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153170518] [2023-12-19 13:36:19,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153170518] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:36:19,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:36:19,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2023-12-19 13:36:19,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304364854] [2023-12-19 13:36:19,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:36:19,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 13:36:19,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:36:19,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 13:36:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2023-12-19 13:36:19,360 INFO L87 Difference]: Start difference. First operand 111311 states and 176158 transitions. Second operand has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 25 states have internal predecessors, (264), 7 states have call successors, (157), 5 states have call predecessors, (157), 10 states have return successors, (158), 7 states have call predecessors, (158), 7 states have call successors, (158) [2023-12-19 13:36:30,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:36:30,697 INFO L93 Difference]: Finished difference Result 654569 states and 1063599 transitions. [2023-12-19 13:36:30,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-19 13:36:30,697 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 25 states have internal predecessors, (264), 7 states have call successors, (157), 5 states have call predecessors, (157), 10 states have return successors, (158), 7 states have call predecessors, (158), 7 states have call successors, (158) Word has length 532 [2023-12-19 13:36:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:36:31,643 INFO L225 Difference]: With dead ends: 654569 [2023-12-19 13:36:31,643 INFO L226 Difference]: Without dead ends: 543647 [2023-12-19 13:36:31,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1041 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=917, Invalid=3775, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 13:36:31,765 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 3490 mSDsluCounter, 4270 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 4852 SdHoareTripleChecker+Invalid, 3912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:36:31,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3490 Valid, 4852 Invalid, 3912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 13:36:32,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543647 states. [2023-12-19 13:36:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543647 to 112491. [2023-12-19 13:36:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112491 states, 106020 states have (on average 1.5656008300320694) internal successors, (165985), 106226 states have internal predecessors, (165985), 5443 states have call successors, (5443), 1027 states have call predecessors, (5443), 1027 states have return successors, (5443), 5237 states have call predecessors, (5443), 5443 states have call successors, (5443) [2023-12-19 13:36:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112491 states to 112491 states and 176871 transitions. [2023-12-19 13:36:38,980 INFO L78 Accepts]: Start accepts. Automaton has 112491 states and 176871 transitions. Word has length 532 [2023-12-19 13:36:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:36:38,981 INFO L495 AbstractCegarLoop]: Abstraction has 112491 states and 176871 transitions. [2023-12-19 13:36:38,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 25 states have internal predecessors, (264), 7 states have call successors, (157), 5 states have call predecessors, (157), 10 states have return successors, (158), 7 states have call predecessors, (158), 7 states have call successors, (158) [2023-12-19 13:36:38,981 INFO L276 IsEmpty]: Start isEmpty. Operand 112491 states and 176871 transitions. [2023-12-19 13:36:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-19 13:36:39,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:36:39,006 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:36:39,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 13:36:39,207 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 [2023-12-19 13:36:39,207 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:36:39,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:36:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1324157330, now seen corresponding path program 1 times [2023-12-19 13:36:39,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:36:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769024920] [2023-12-19 13:36:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:36:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:36:39,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:36:39,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337828732] [2023-12-19 13:36:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:36:39,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:36:39,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:36:39,254 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) [2023-12-19 13:36:39,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 13:36:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:36:39,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 13:36:39,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:36:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7827 proven. 360 refuted. 0 times theorem prover too weak. 4137 trivial. 0 not checked. [2023-12-19 13:36:41,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:36:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 324 proven. 369 refuted. 0 times theorem prover too weak. 11631 trivial. 0 not checked. [2023-12-19 13:36:42,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:36:42,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769024920] [2023-12-19 13:36:42,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:36:42,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337828732] [2023-12-19 13:36:42,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337828732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:36:42,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:36:42,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-19 13:36:42,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329602367] [2023-12-19 13:36:42,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:36:42,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 13:36:42,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:36:42,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 13:36:42,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2023-12-19 13:36:42,058 INFO L87 Difference]: Start difference. First operand 112491 states and 176871 transitions. Second operand has 26 states, 26 states have (on average 8.5) internal successors, (221), 26 states have internal predecessors, (221), 8 states have call successors, (158), 5 states have call predecessors, (158), 11 states have return successors, (158), 8 states have call predecessors, (158), 8 states have call successors, (158)