/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_amount250_file-62.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 13:01:55,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 13:01:55,258 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 13:01:55,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 13:01:55,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 13:01:55,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 13:01:55,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 13:01:55,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 13:01:55,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 13:01:55,294 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 13:01:55,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 13:01:55,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 13:01:55,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 13:01:55,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 13:01:55,296 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 13:01:55,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 13:01:55,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 13:01:55,296 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 13:01:55,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 13:01:55,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 13:01:55,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 13:01:55,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 13:01:55,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 13:01:55,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 13:01:55,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 13:01:55,298 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 13:01:55,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 13:01:55,298 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 13:01:55,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 13:01:55,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 13:01:55,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 13:01:55,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 13:01:55,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:01:55,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 13:01:55,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 13:01:55,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 13:01:55,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 13:01:55,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 13:01:55,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 13:01:55,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 13:01:55,301 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 13:01:55,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 13:01:55,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 13:01:55,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 13:01:55,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 13:01:55,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 13:01:55,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 13:01:55,507 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 13:01:55,507 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 13:01:55,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-62.i [2023-12-19 13:01:56,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 13:01:56,638 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 13:01:56,639 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-62.i [2023-12-19 13:01:56,647 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c0f3852/17e78e3b7db44f75b4d4fe77ac9a9f73/FLAGacb32fd27 [2023-12-19 13:01:56,661 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c0f3852/17e78e3b7db44f75b4d4fe77ac9a9f73 [2023-12-19 13:01:56,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 13:01:56,665 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 13:01:56,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 13:01:56,667 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 13:01:56,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 13:01:56,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:56,671 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@655e1619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56, skipping insertion in model container [2023-12-19 13:01:56,671 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:56,715 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 13:01:56,798 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_amount250_file-62.i[916,929] [2023-12-19 13:01:56,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:01:56,901 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 13:01:56,908 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_amount250_file-62.i[916,929] [2023-12-19 13:01:56,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:01:56,967 INFO L206 MainTranslator]: Completed translation [2023-12-19 13:01:56,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56 WrapperNode [2023-12-19 13:01:56,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 13:01:56,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 13:01:56,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 13:01:56,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 13:01:56,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:56,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,031 INFO L138 Inliner]: procedures = 26, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 461 [2023-12-19 13:01:57,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 13:01:57,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 13:01:57,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 13:01:57,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 13:01:57,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,100 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 13:01:57,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 13:01:57,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 13:01:57,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 13:01:57,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 13:01:57,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (1/1) ... [2023-12-19 13:01:57,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:01:57,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:01:57,179 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 13:01:57,218 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 13:01:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 13:01:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 13:01:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 13:01:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 13:01:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 13:01:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 13:01:57,348 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 13:01:57,356 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 13:01:57,804 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 13:01:57,837 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 13:01:57,838 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 13:01:57,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:01:57 BoogieIcfgContainer [2023-12-19 13:01:57,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 13:01:57,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 13:01:57,839 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 13:01:57,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 13:01:57,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:01:56" (1/3) ... [2023-12-19 13:01:57,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6393dc48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:01:57, skipping insertion in model container [2023-12-19 13:01:57,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:01:56" (2/3) ... [2023-12-19 13:01:57,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6393dc48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:01:57, skipping insertion in model container [2023-12-19 13:01:57,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:01:57" (3/3) ... [2023-12-19 13:01:57,843 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-62.i [2023-12-19 13:01:57,854 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 13:01:57,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 13:01:57,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 13:01:57,921 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;@5a89054e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 13:01:57,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 13:01:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 118 states have (on average 1.5084745762711864) internal successors, (178), 119 states have internal predecessors, (178), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-19 13:01:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-19 13:01:57,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:01:57,959 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:57,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:01:57,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:01:57,966 INFO L85 PathProgramCache]: Analyzing trace with hash -729240121, now seen corresponding path program 1 times [2023-12-19 13:01:57,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:01:57,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622947093] [2023-12-19 13:01:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:01:57,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:01:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:01:58,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:01:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622947093] [2023-12-19 13:01:58,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 13:01:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415807332] [2023-12-19 13:01:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:01:58,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:01:58,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:01:58,260 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 13:01:58,292 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 13:01:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:01:58,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 13:01:58,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:01:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2023-12-19 13:01:58,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:01:58,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415807332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:01:58,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:01:58,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:01:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729666102] [2023-12-19 13:01:58,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:01:58,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 13:01:58,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:01:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 13:01:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:01:58,646 INFO L87 Difference]: Start difference. First operand has 177 states, 118 states have (on average 1.5084745762711864) internal successors, (178), 119 states have internal predecessors, (178), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-19 13:01:58,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:01:58,712 INFO L93 Difference]: Finished difference Result 351 states and 634 transitions. [2023-12-19 13:01:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 13:01:58,714 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) Word has length 365 [2023-12-19 13:01:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:01:58,722 INFO L225 Difference]: With dead ends: 351 [2023-12-19 13:01:58,722 INFO L226 Difference]: Without dead ends: 175 [2023-12-19 13:01:58,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:01:58,731 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:01:58,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:01:58,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-19 13:01:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-12-19 13:01:58,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 117 states have (on average 1.4615384615384615) internal successors, (171), 117 states have internal predecessors, (171), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-19 13:01:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 283 transitions. [2023-12-19 13:01:58,786 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 283 transitions. Word has length 365 [2023-12-19 13:01:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:01:58,787 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 283 transitions. [2023-12-19 13:01:58,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-19 13:01:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 283 transitions. [2023-12-19 13:01:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-19 13:01:58,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:01:58,797 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:58,804 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 13:01:59,004 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 13:01:59,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:01:59,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:01:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1594907531, now seen corresponding path program 1 times [2023-12-19 13:01:59,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:01:59,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765419307] [2023-12-19 13:01:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:01:59,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:01:59,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:01:59,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724541300] [2023-12-19 13:01:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:01:59,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:01:59,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:01:59,146 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 13:01:59,152 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 13:01:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:01:59,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 13:01:59,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:01:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:01:59,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:01:59,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:01:59,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765419307] [2023-12-19 13:01:59,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:01:59,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724541300] [2023-12-19 13:01:59,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724541300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:01:59,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:01:59,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:01:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136347786] [2023-12-19 13:01:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:01:59,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:01:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:01:59,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:01:59,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:01:59,405 INFO L87 Difference]: Start difference. First operand 175 states and 283 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:01:59,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:01:59,440 INFO L93 Difference]: Finished difference Result 349 states and 565 transitions. [2023-12-19 13:01:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:01:59,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 365 [2023-12-19 13:01:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:01:59,443 INFO L225 Difference]: With dead ends: 349 [2023-12-19 13:01:59,443 INFO L226 Difference]: Without dead ends: 175 [2023-12-19 13:01:59,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:01:59,444 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 77 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:01:59,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 748 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:01:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-19 13:01:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-12-19 13:01:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 117 states have (on average 1.452991452991453) internal successors, (170), 117 states have internal predecessors, (170), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-19 13:01:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 282 transitions. [2023-12-19 13:01:59,454 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 282 transitions. Word has length 365 [2023-12-19 13:01:59,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:01:59,456 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 282 transitions. [2023-12-19 13:01:59,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:01:59,456 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 282 transitions. [2023-12-19 13:01:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-19 13:01:59,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:01:59,459 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:59,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 13:01:59,665 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 13:01:59,666 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:01:59,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:01:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1200540745, now seen corresponding path program 1 times [2023-12-19 13:01:59,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:01:59,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296467426] [2023-12-19 13:01:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:01:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:01:59,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:01:59,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521427577] [2023-12-19 13:01:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:01:59,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:01:59,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:01:59,737 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 13:01:59,760 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 13:01:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:01:59,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:01:59,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:01:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:01:59,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:01:59,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:01:59,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296467426] [2023-12-19 13:01:59,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:01:59,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521427577] [2023-12-19 13:01:59,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521427577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:01:59,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:01:59,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:01:59,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912411275] [2023-12-19 13:01:59,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:01:59,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:01:59,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:01:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:01:59,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:01:59,994 INFO L87 Difference]: Start difference. First operand 175 states and 282 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:02:00,051 INFO L93 Difference]: Finished difference Result 506 states and 814 transitions. [2023-12-19 13:02:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:02:00,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 365 [2023-12-19 13:02:00,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:02:00,055 INFO L225 Difference]: With dead ends: 506 [2023-12-19 13:02:00,055 INFO L226 Difference]: Without dead ends: 332 [2023-12-19 13:02:00,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 363 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 13:02:00,057 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 249 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:02:00,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 758 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:02:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-19 13:02:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 193. [2023-12-19 13:02:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 135 states have (on average 1.4814814814814814) internal successors, (200), 135 states have internal predecessors, (200), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-19 13:02:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 312 transitions. [2023-12-19 13:02:00,087 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 312 transitions. Word has length 365 [2023-12-19 13:02:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:02:00,088 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 312 transitions. [2023-12-19 13:02:00,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 312 transitions. [2023-12-19 13:02:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-19 13:02:00,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:02:00,092 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:00,098 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 13:02:00,298 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 13:02:00,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:02:00,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:02:00,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2081920079, now seen corresponding path program 1 times [2023-12-19 13:02:00,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:02:00,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559254862] [2023-12-19 13:02:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:00,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:02:00,343 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:02:00,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620093954] [2023-12-19 13:02:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:00,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:02:00,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:02:00,345 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 13:02:00,364 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 13:02:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:02:00,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 13:02:00,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:02:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:02:01,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:02:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:02:01,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559254862] [2023-12-19 13:02:01,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:02:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620093954] [2023-12-19 13:02:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620093954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:02:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:02:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:02:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783963788] [2023-12-19 13:02:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:02:01,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:02:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:02:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:02:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:02:01,247 INFO L87 Difference]: Start difference. First operand 193 states and 312 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:01,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:02:01,531 INFO L93 Difference]: Finished difference Result 600 states and 972 transitions. [2023-12-19 13:02:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 13:02:01,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 366 [2023-12-19 13:02:01,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:02:01,537 INFO L225 Difference]: With dead ends: 600 [2023-12-19 13:02:01,537 INFO L226 Difference]: Without dead ends: 408 [2023-12-19 13:02:01,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 362 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 13:02:01,540 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 225 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:02:01,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 947 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:02:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-12-19 13:02:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 333. [2023-12-19 13:02:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 218 states have (on average 1.4174311926605505) internal successors, (309), 218 states have internal predecessors, (309), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 13:02:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 533 transitions. [2023-12-19 13:02:01,561 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 533 transitions. Word has length 366 [2023-12-19 13:02:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:02:01,562 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 533 transitions. [2023-12-19 13:02:01,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 533 transitions. [2023-12-19 13:02:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-19 13:02:01,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:02:01,564 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:01,572 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 13:02:01,770 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 13:02:01,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:02:01,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:02:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2092966129, now seen corresponding path program 1 times [2023-12-19 13:02:01,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:02:01,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243785496] [2023-12-19 13:02:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:01,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:02:01,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:02:01,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604758128] [2023-12-19 13:02:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:01,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:02:01,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:02:01,803 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 13:02:01,807 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 13:02:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:02:02,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:02:02,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:02:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-12-19 13:02:02,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:02:02,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:02:02,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243785496] [2023-12-19 13:02:02,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:02:02,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604758128] [2023-12-19 13:02:02,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604758128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:02:02,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:02:02,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:02:02,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258732482] [2023-12-19 13:02:02,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:02:02,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:02:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:02:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:02:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:02:02,098 INFO L87 Difference]: Start difference. First operand 333 states and 533 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:02:02,624 INFO L93 Difference]: Finished difference Result 520 states and 820 transitions. [2023-12-19 13:02:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 13:02:02,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 1 states have call successors, (56) Word has length 367 [2023-12-19 13:02:02,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:02:02,626 INFO L225 Difference]: With dead ends: 520 [2023-12-19 13:02:02,626 INFO L226 Difference]: Without dead ends: 328 [2023-12-19 13:02:02,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-12-19 13:02:02,628 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 355 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:02:02,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 926 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:02:02,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-19 13:02:02,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 320. [2023-12-19 13:02:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 203 states have (on average 1.3596059113300492) internal successors, (276), 203 states have internal predecessors, (276), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 13:02:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 500 transitions. [2023-12-19 13:02:02,658 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 500 transitions. Word has length 367 [2023-12-19 13:02:02,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:02:02,659 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 500 transitions. [2023-12-19 13:02:02,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (56), 1 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 500 transitions. [2023-12-19 13:02:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-19 13:02:02,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:02:02,673 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:02,682 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 13:02:02,880 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 13:02:02,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:02:02,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:02:02,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1164614709, now seen corresponding path program 1 times [2023-12-19 13:02:02,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:02:02,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675288847] [2023-12-19 13:02:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:02,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:02:02,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:02:02,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768629968] [2023-12-19 13:02:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:02,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:02:02,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:02:02,916 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 13:02:02,919 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 13:02:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:02:03,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:02:03,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:02:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:02:03,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:02:03,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:02:03,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675288847] [2023-12-19 13:02:03,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:02:03,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768629968] [2023-12-19 13:02:03,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768629968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:02:03,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:02:03,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:02:03,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498618358] [2023-12-19 13:02:03,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:02:03,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:02:03,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:02:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:02:03,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:02:03,175 INFO L87 Difference]: Start difference. First operand 320 states and 500 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:03,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:02:03,220 INFO L93 Difference]: Finished difference Result 495 states and 775 transitions. [2023-12-19 13:02:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:02:03,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 367 [2023-12-19 13:02:03,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:02:03,222 INFO L225 Difference]: With dead ends: 495 [2023-12-19 13:02:03,222 INFO L226 Difference]: Without dead ends: 320 [2023-12-19 13:02:03,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 365 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 13:02:03,224 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:02:03,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 527 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:02:03,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-19 13:02:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2023-12-19 13:02:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 203 states have (on average 1.354679802955665) internal successors, (275), 203 states have internal predecessors, (275), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 13:02:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 499 transitions. [2023-12-19 13:02:03,242 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 499 transitions. Word has length 367 [2023-12-19 13:02:03,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:02:03,243 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 499 transitions. [2023-12-19 13:02:03,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 499 transitions. [2023-12-19 13:02:03,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-19 13:02:03,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:02:03,245 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:03,253 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 13:02:03,454 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 13:02:03,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:02:03,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:02:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash 355268083, now seen corresponding path program 1 times [2023-12-19 13:02:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:02:03,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326681273] [2023-12-19 13:02:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:02:03,486 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:02:03,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927760253] [2023-12-19 13:02:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:03,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:02:03,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:02:03,488 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 13:02:03,516 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 13:02:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:02:03,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 13:02:03,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:02:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 4269 proven. 213 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2023-12-19 13:02:04,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:02:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 411 proven. 231 refuted. 0 times theorem prover too weak. 5518 trivial. 0 not checked. [2023-12-19 13:02:04,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:02:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326681273] [2023-12-19 13:02:04,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:02:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927760253] [2023-12-19 13:02:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927760253] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:02:04,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:02:04,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-12-19 13:02:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527057809] [2023-12-19 13:02:04,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:02:04,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 13:02:04,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:02:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 13:02:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2023-12-19 13:02:04,983 INFO L87 Difference]: Start difference. First operand 320 states and 499 transitions. Second operand has 25 states, 25 states have (on average 7.04) internal successors, (176), 25 states have internal predecessors, (176), 8 states have call successors, (96), 5 states have call predecessors, (96), 12 states have return successors, (97), 8 states have call predecessors, (97), 8 states have call successors, (97) [2023-12-19 13:02:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:02:05,735 INFO L93 Difference]: Finished difference Result 551 states and 821 transitions. [2023-12-19 13:02:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 13:02:05,737 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.04) internal successors, (176), 25 states have internal predecessors, (176), 8 states have call successors, (96), 5 states have call predecessors, (96), 12 states have return successors, (97), 8 states have call predecessors, (97), 8 states have call successors, (97) Word has length 367 [2023-12-19 13:02:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:02:05,741 INFO L225 Difference]: With dead ends: 551 [2023-12-19 13:02:05,741 INFO L226 Difference]: Without dead ends: 376 [2023-12-19 13:02:05,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 708 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=473, Invalid=1009, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 13:02:05,742 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 794 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:02:05,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 814 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 13:02:05,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-12-19 13:02:05,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 352. [2023-12-19 13:02:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 227 states have (on average 1.3127753303964758) internal successors, (298), 227 states have internal predecessors, (298), 112 states have call successors, (112), 12 states have call predecessors, (112), 12 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 13:02:05,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 522 transitions. [2023-12-19 13:02:05,768 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 522 transitions. Word has length 367 [2023-12-19 13:02:05,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:02:05,769 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 522 transitions. [2023-12-19 13:02:05,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.04) internal successors, (176), 25 states have internal predecessors, (176), 8 states have call successors, (96), 5 states have call predecessors, (96), 12 states have return successors, (97), 8 states have call predecessors, (97), 8 states have call successors, (97) [2023-12-19 13:02:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 522 transitions. [2023-12-19 13:02:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-19 13:02:05,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:02:05,771 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:05,790 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 13:02:05,990 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 13:02:05,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:02:05,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:02:05,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1096365151, now seen corresponding path program 1 times [2023-12-19 13:02:05,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:02:05,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832298216] [2023-12-19 13:02:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:02:06,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:02:06,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965610258] [2023-12-19 13:02:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:06,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:02:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:02:06,024 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 13:02:06,028 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 13:02:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:02:06,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 13:02:06,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:02:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 1065 proven. 150 refuted. 0 times theorem prover too weak. 4945 trivial. 0 not checked. [2023-12-19 13:02:06,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:02:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 15 proven. 150 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-12-19 13:02:06,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:02:06,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832298216] [2023-12-19 13:02:06,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:02:06,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965610258] [2023-12-19 13:02:06,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965610258] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:02:06,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:02:06,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 13:02:06,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705207454] [2023-12-19 13:02:06,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:02:06,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 13:02:06,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:02:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 13:02:06,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:02:06,921 INFO L87 Difference]: Start difference. First operand 352 states and 522 transitions. Second operand has 12 states, 12 states have (on average 12.916666666666666) internal successors, (155), 12 states have internal predecessors, (155), 3 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 3 states have call predecessors, (107), 3 states have call successors, (107) [2023-12-19 13:02:07,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:02:07,372 INFO L93 Difference]: Finished difference Result 651 states and 953 transitions. [2023-12-19 13:02:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 13:02:07,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.916666666666666) internal successors, (155), 12 states have internal predecessors, (155), 3 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 3 states have call predecessors, (107), 3 states have call successors, (107) Word has length 368 [2023-12-19 13:02:07,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:02:07,376 INFO L225 Difference]: With dead ends: 651 [2023-12-19 13:02:07,376 INFO L226 Difference]: Without dead ends: 460 [2023-12-19 13:02:07,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-12-19 13:02:07,377 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 601 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:02:07,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 803 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:02:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-12-19 13:02:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 441. [2023-12-19 13:02:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 308 states have (on average 1.3409090909090908) internal successors, (413), 309 states have internal predecessors, (413), 117 states have call successors, (117), 15 states have call predecessors, (117), 15 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-19 13:02:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 647 transitions. [2023-12-19 13:02:07,404 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 647 transitions. Word has length 368 [2023-12-19 13:02:07,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:02:07,405 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 647 transitions. [2023-12-19 13:02:07,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.916666666666666) internal successors, (155), 12 states have internal predecessors, (155), 3 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 3 states have call predecessors, (107), 3 states have call successors, (107) [2023-12-19 13:02:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 647 transitions. [2023-12-19 13:02:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-19 13:02:07,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:02:07,407 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:07,416 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 13:02:07,613 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 13:02:07,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:02:07,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:02:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1734584732, now seen corresponding path program 1 times [2023-12-19 13:02:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:02:07,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331184498] [2023-12-19 13:02:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:07,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:02:07,660 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:02:07,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815076909] [2023-12-19 13:02:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:07,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:02:07,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:02:07,662 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 13:02:07,666 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 13:02:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:02:07,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:02:07,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:02:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:02:08,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:02:08,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:02:08,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331184498] [2023-12-19 13:02:08,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:02:08,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815076909] [2023-12-19 13:02:08,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815076909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:02:08,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:02:08,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:02:08,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487390590] [2023-12-19 13:02:08,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:02:08,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:02:08,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:02:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:02:08,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:02:08,315 INFO L87 Difference]: Start difference. First operand 441 states and 647 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:02:08,369 INFO L93 Difference]: Finished difference Result 703 states and 1034 transitions. [2023-12-19 13:02:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:02:08,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 369 [2023-12-19 13:02:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:02:08,372 INFO L225 Difference]: With dead ends: 703 [2023-12-19 13:02:08,372 INFO L226 Difference]: Without dead ends: 441 [2023-12-19 13:02:08,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 366 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 13:02:08,373 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 124 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:02:08,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 485 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:02:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-19 13:02:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2023-12-19 13:02:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 308 states have (on average 1.3344155844155845) internal successors, (411), 309 states have internal predecessors, (411), 117 states have call successors, (117), 15 states have call predecessors, (117), 15 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-19 13:02:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 645 transitions. [2023-12-19 13:02:08,402 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 645 transitions. Word has length 369 [2023-12-19 13:02:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:02:08,402 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 645 transitions. [2023-12-19 13:02:08,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:08,403 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 645 transitions. [2023-12-19 13:02:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-19 13:02:08,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:02:08,405 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:08,413 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 13:02:08,611 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 13:02:08,612 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:02:08,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:02:08,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1475749847, now seen corresponding path program 1 times [2023-12-19 13:02:08,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:02:08,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374553310] [2023-12-19 13:02:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:08,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:02:08,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:02:08,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946555065] [2023-12-19 13:02:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:08,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:02:08,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:02:08,641 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 13:02:08,643 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 13:02:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:02:08,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 13:02:08,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:02:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3140 proven. 396 refuted. 0 times theorem prover too weak. 2624 trivial. 0 not checked. [2023-12-19 13:02:10,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:02:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 78 proven. 249 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2023-12-19 13:02:11,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:02:11,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374553310] [2023-12-19 13:02:11,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:02:11,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946555065] [2023-12-19 13:02:11,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946555065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:02:11,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:02:11,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2023-12-19 13:02:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679368131] [2023-12-19 13:02:11,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:02:11,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 13:02:11,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:02:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 13:02:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-12-19 13:02:11,426 INFO L87 Difference]: Start difference. First operand 441 states and 645 transitions. Second operand has 25 states, 25 states have (on average 7.12) internal successors, (178), 25 states have internal predecessors, (178), 6 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 6 states have call predecessors, (109), 6 states have call successors, (109) [2023-12-19 13:02:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:02:14,943 INFO L93 Difference]: Finished difference Result 913 states and 1287 transitions. [2023-12-19 13:02:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-19 13:02:14,944 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.12) internal successors, (178), 25 states have internal predecessors, (178), 6 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 6 states have call predecessors, (109), 6 states have call successors, (109) Word has length 370 [2023-12-19 13:02:14,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:02:14,946 INFO L225 Difference]: With dead ends: 913 [2023-12-19 13:02:14,946 INFO L226 Difference]: Without dead ends: 651 [2023-12-19 13:02:14,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 719 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1324, Invalid=3506, Unknown=0, NotChecked=0, Total=4830 [2023-12-19 13:02:14,948 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 917 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:02:14,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1817 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 13:02:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-12-19 13:02:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 469. [2023-12-19 13:02:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 330 states have (on average 1.2969696969696969) internal successors, (428), 330 states have internal predecessors, (428), 112 states have call successors, (112), 26 states have call predecessors, (112), 26 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 13:02:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 652 transitions. [2023-12-19 13:02:15,001 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 652 transitions. Word has length 370 [2023-12-19 13:02:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:02:15,001 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 652 transitions. [2023-12-19 13:02:15,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.12) internal successors, (178), 25 states have internal predecessors, (178), 6 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 6 states have call predecessors, (109), 6 states have call successors, (109) [2023-12-19 13:02:15,002 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 652 transitions. [2023-12-19 13:02:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-19 13:02:15,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:02:15,003 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:15,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 13:02:15,210 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 13:02:15,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:02:15,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:02:15,211 INFO L85 PathProgramCache]: Analyzing trace with hash 51002157, now seen corresponding path program 1 times [2023-12-19 13:02:15,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:02:15,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345627331] [2023-12-19 13:02:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:15,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:02:15,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:02:15,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243759904] [2023-12-19 13:02:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:15,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:02:15,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:02:15,243 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 13:02:15,247 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 13:02:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:02:15,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 13:02:15,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:02:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:02:15,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:02:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:02:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345627331] [2023-12-19 13:02:15,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:02:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243759904] [2023-12-19 13:02:15,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243759904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:02:15,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:02:15,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:02:15,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038187538] [2023-12-19 13:02:15,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:02:15,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:02:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:02:15,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:02:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:02:15,769 INFO L87 Difference]: Start difference. First operand 469 states and 652 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:02:16,014 INFO L93 Difference]: Finished difference Result 821 states and 1153 transitions. [2023-12-19 13:02:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 13:02:16,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 370 [2023-12-19 13:02:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:02:16,018 INFO L225 Difference]: With dead ends: 821 [2023-12-19 13:02:16,018 INFO L226 Difference]: Without dead ends: 555 [2023-12-19 13:02:16,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 366 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 13:02:16,019 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 175 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:02:16,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 937 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:02:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-19 13:02:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 477. [2023-12-19 13:02:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 338 states have (on average 1.2958579881656804) internal successors, (438), 338 states have internal predecessors, (438), 112 states have call successors, (112), 26 states have call predecessors, (112), 26 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 13:02:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 662 transitions. [2023-12-19 13:02:16,096 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 662 transitions. Word has length 370 [2023-12-19 13:02:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:02:16,097 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 662 transitions. [2023-12-19 13:02:16,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:02:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 662 transitions. [2023-12-19 13:02:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-19 13:02:16,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:02:16,099 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:16,106 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 13:02:16,306 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 13:02:16,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:02:16,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:02:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1209182920, now seen corresponding path program 1 times [2023-12-19 13:02:16,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:02:16,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336523853] [2023-12-19 13:02:16,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:16,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:02:16,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:02:16,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776009349] [2023-12-19 13:02:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:02:16,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:02:16,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:02:16,338 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 13:02:16,340 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 13:02:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:02:16,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 13:02:16,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:02:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2433 proven. 42 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2023-12-19 13:02:17,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:02:21,162 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (mod c_~var_1_58~0 65536))) (let ((.cse3 (+ .cse6 1)) (.cse2 (mod c_~var_1_7~0 4294967296))) (and (forall ((v_z_47 Int) (v_y_35 Int) (v_z_42 Int)) (let ((.cse1 (div v_z_47 v_z_42)) (.cse0 (* v_y_35 4294967296))) (or (< 255 v_z_42) (< (+ .cse0 4294967295) .cse1) (< .cse2 v_z_47) (< v_z_42 .cse3) (< v_z_47 0) (< .cse1 (+ .cse0 1))))) (forall ((v_z_46 Int) (v_y_35 Int)) (let ((.cse5 (* v_y_35 4294967296)) (.cse4 (div v_z_46 .cse6))) (or (< .cse2 v_z_46) (< .cse4 (+ .cse5 1)) (< v_z_46 0) (< (+ .cse5 4294967295) .cse4)))) (or (and (let ((.cse7 (div .cse2 .cse6))) (<= (+ (* (div (+ (- 1) .cse7) 4294967296) 4294967296) 4294967296) .cse7)) (forall ((v_y_35 Int) (v_z_37 Int)) (let ((.cse9 (* v_y_35 4294967296)) (.cse8 (div .cse2 v_z_37))) (or (< 255 v_z_37) (< .cse8 (+ .cse9 1)) (< v_z_37 .cse3) (< (+ .cse9 4294967295) .cse8))))) (< 4294967294 .cse2))))) is different from false [2023-12-19 13:02:29,494 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse8 (mod c_~var_1_58~0 65536))) (let ((.cse3 (+ .cse8 1)) (.cse0 (mod c_~var_1_75~0 256))) (and (or (< .cse0 6) (and (forall ((v_z_47 Int) (v_y_35 Int) (v_z_42 Int)) (let ((.cse2 (div v_z_47 v_z_42)) (.cse1 (* v_y_35 4294967296))) (or (< (+ .cse1 4294967295) .cse2) (< 5 v_z_47) (< v_z_42 .cse3) (< v_z_47 0) (< .cse2 (+ .cse1 1))))) (forall ((v_y_35 Int) (v_z_37 Int)) (let ((.cse5 (* v_y_35 4294967296)) (.cse4 (div 5 v_z_37))) (or (< .cse4 (+ .cse5 1)) (< (+ .cse5 4294967295) .cse4) (< v_z_37 .cse3)))) (forall ((v_z_46 Int) (v_y_35 Int)) (let ((.cse7 (* v_y_35 4294967296)) (.cse6 (div v_z_46 .cse8))) (or (< .cse6 (+ .cse7 1)) (< v_z_46 0) (< (+ .cse7 4294967295) .cse6) (< 5 v_z_46)))) (let ((.cse9 (div 5 .cse8))) (<= (+ (* (div (+ (- 1) .cse9) 4294967296) 4294967296) 4294967296) .cse9)))) (or (< 5 .cse0) (and (forall ((v_z_46 Int) (v_y_35 Int)) (let ((.cse11 (* v_y_35 4294967296)) (.cse10 (div v_z_46 .cse8))) (or (< .cse0 v_z_46) (< .cse10 (+ .cse11 1)) (< v_z_46 0) (< (+ .cse11 4294967295) .cse10)))) (forall ((v_y_35 Int) (v_z_37 Int)) (let ((.cse13 (div .cse0 v_z_37)) (.cse12 (* v_y_35 4294967296))) (or (< (+ .cse12 4294967295) .cse13) (< v_z_37 .cse3) (< .cse13 (+ .cse12 1))))) (let ((.cse14 (div .cse0 .cse8))) (<= (+ (* (div (+ (- 1) .cse14) 4294967296) 4294967296) 4294967296) .cse14)) (forall ((v_z_47 Int) (v_y_35 Int) (v_z_42 Int)) (let ((.cse16 (div v_z_47 v_z_42)) (.cse15 (* v_y_35 4294967296))) (or (< (+ .cse15 4294967295) .cse16) (< v_z_42 .cse3) (< v_z_47 0) (< .cse16 (+ .cse15 1)) (< .cse0 v_z_47))))))))) is different from false [2023-12-19 13:03:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 123 proven. 42 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-12-19 13:03:05,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:03:05,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336523853] [2023-12-19 13:03:05,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:03:05,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776009349] [2023-12-19 13:03:05,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776009349] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:03:05,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:03:05,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-19 13:03:05,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111173092] [2023-12-19 13:03:05,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:03:05,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 13:03:05,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:03:05,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 13:03:05,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=95, Unknown=2, NotChecked=42, Total=182 [2023-12-19 13:03:05,103 INFO L87 Difference]: Start difference. First operand 477 states and 662 transitions. Second operand has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 3 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2023-12-19 13:03:11,140 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~var_1_58~0 65536))) (let ((.cse4 (+ .cse1 1)) (.cse0 (mod c_~var_1_75~0 256))) (and (<= .cse0 0) (<= 32767 .cse1) (or (< .cse0 6) (and (forall ((v_z_47 Int) (v_y_35 Int) (v_z_42 Int)) (let ((.cse3 (div v_z_47 v_z_42)) (.cse2 (* v_y_35 4294967296))) (or (< (+ .cse2 4294967295) .cse3) (< 5 v_z_47) (< v_z_42 .cse4) (< v_z_47 0) (< .cse3 (+ .cse2 1))))) (forall ((v_y_35 Int) (v_z_37 Int)) (let ((.cse6 (* v_y_35 4294967296)) (.cse5 (div 5 v_z_37))) (or (< .cse5 (+ .cse6 1)) (< (+ .cse6 4294967295) .cse5) (< v_z_37 .cse4)))) (forall ((v_z_46 Int) (v_y_35 Int)) (let ((.cse8 (* v_y_35 4294967296)) (.cse7 (div v_z_46 .cse1))) (or (< .cse7 (+ .cse8 1)) (< v_z_46 0) (< (+ .cse8 4294967295) .cse7) (< 5 v_z_46)))) (let ((.cse9 (div 5 .cse1))) (<= (+ (* (div (+ (- 1) .cse9) 4294967296) 4294967296) 4294967296) .cse9)))) (or (< 5 .cse0) (and (forall ((v_z_46 Int) (v_y_35 Int)) (let ((.cse11 (* v_y_35 4294967296)) (.cse10 (div v_z_46 .cse1))) (or (< .cse0 v_z_46) (< .cse10 (+ .cse11 1)) (< v_z_46 0) (< (+ .cse11 4294967295) .cse10)))) (forall ((v_y_35 Int) (v_z_37 Int)) (let ((.cse13 (div .cse0 v_z_37)) (.cse12 (* v_y_35 4294967296))) (or (< (+ .cse12 4294967295) .cse13) (< v_z_37 .cse4) (< .cse13 (+ .cse12 1))))) (let ((.cse14 (div .cse0 .cse1))) (<= (+ (* (div (+ (- 1) .cse14) 4294967296) 4294967296) 4294967296) .cse14)) (forall ((v_z_47 Int) (v_y_35 Int) (v_z_42 Int)) (let ((.cse16 (div v_z_47 v_z_42)) (.cse15 (* v_y_35 4294967296))) (or (< (+ .cse15 4294967295) .cse16) (< v_z_42 .cse4) (< v_z_47 0) (< .cse16 (+ .cse15 1)) (< .cse0 v_z_47))))))))) is different from false [2023-12-19 13:03:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 13:03:11,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=74, Invalid=172, Unknown=2, NotChecked=58, Total=306 [2023-12-19 13:03:11,196 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 122 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 361 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:03:11,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 466 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 601 Invalid, 0 Unknown, 361 Unchecked, 1.8s Time] [2023-12-19 13:03:11,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 139 [2023-12-19 13:03:11,206 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 13:03:11,397 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 13:03:11,398 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:867) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 48 more [2023-12-19 13:03:11,401 INFO L158 Benchmark]: Toolchain (without parser) took 74736.00ms. Allocated memory was 205.5MB in the beginning and 596.6MB in the end (delta: 391.1MB). Free memory was 167.3MB in the beginning and 263.3MB in the end (delta: -95.9MB). Peak memory consumption was 295.7MB. Max. memory is 8.0GB. [2023-12-19 13:03:11,401 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 162.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 13:03:11,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.94ms. Allocated memory is still 205.5MB. Free memory was 167.0MB in the beginning and 141.1MB in the end (delta: 25.9MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-19 13:03:11,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.90ms. Allocated memory is still 205.5MB. Free memory was 141.1MB in the beginning and 130.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 13:03:11,401 INFO L158 Benchmark]: Boogie Preprocessor took 126.43ms. Allocated memory is still 205.5MB. Free memory was 130.3MB in the beginning and 112.1MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-19 13:03:11,401 INFO L158 Benchmark]: RCFGBuilder took 678.24ms. Allocated memory is still 205.5MB. Free memory was 111.7MB in the beginning and 116.8MB in the end (delta: -5.0MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2023-12-19 13:03:11,401 INFO L158 Benchmark]: TraceAbstraction took 73560.95ms. Allocated memory was 205.5MB in the beginning and 596.6MB in the end (delta: 391.1MB). Free memory was 115.7MB in the beginning and 263.3MB in the end (delta: -147.5MB). Peak memory consumption was 243.8MB. Max. memory is 8.0GB. [2023-12-19 13:03:11,403 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 162.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 300.94ms. Allocated memory is still 205.5MB. Free memory was 167.0MB in the beginning and 141.1MB in the end (delta: 25.9MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.90ms. Allocated memory is still 205.5MB. Free memory was 141.1MB in the beginning and 130.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 126.43ms. Allocated memory is still 205.5MB. Free memory was 130.3MB in the beginning and 112.1MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * RCFGBuilder took 678.24ms. Allocated memory is still 205.5MB. Free memory was 111.7MB in the beginning and 116.8MB in the end (delta: -5.0MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * TraceAbstraction took 73560.95ms. Allocated memory was 205.5MB in the beginning and 596.6MB in the end (delta: 391.1MB). Free memory was 115.7MB in the beginning and 263.3MB in the end (delta: -147.5MB). Peak memory consumption was 243.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...