/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/array-crafted/bAnd3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 22:19:36,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 22:19:36,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 22:19:36,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-30 22:19:36,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-30 22:19:36,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-30 22:19:36,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-30 22:19:36,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-30 22:19:36,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-30 22:19:36,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-30 22:19:36,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-30 22:19:36,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-30 22:19:36,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 22:19:36,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 22:19:36,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 22:19:36,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 22:19:36,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 22:19:36,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 22:19:36,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 22:19:36,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 22:19:36,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 22:19:36,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 22:19:36,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 22:19:36,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 22:19:36,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 22:19:36,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-30 22:19:36,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-30 22:19:36,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-30 22:19:36,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-30 22:19:36,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-30 22:19:36,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-30 22:19:36,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-30 22:19:36,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-30 22:19:36,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 22:19:36,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 22:19:36,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 22:19:36,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 22:19:36,643 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 22:19:36,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 22:19:36,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 22:19:36,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 22:19:36,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 22:19:36,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 22:19:36,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 22:19:36,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 22:19:36,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 22:19:36,645 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 22:19:36,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 22:19:36,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 22:19:36,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 22:19:36,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 22:19:36,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:19:36,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 22:19:36,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 22:19:36,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 22:19:36,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 22:19:36,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 22:19:36,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 22:19:36,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 22:19:36,647 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 22:19:36,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 22:19:36,647 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 22:19:36,647 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 22:19:36,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 22:19:36,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 22:19:36,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 22:19:36,802 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 22:19:36,803 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 22:19:36,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bAnd3.i [2023-03-30 22:19:37,870 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 22:19:38,028 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 22:19:38,029 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd3.i [2023-03-30 22:19:38,033 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f23ba24/6d1ddb22b1bc46cdaa14f04553276a5c/FLAG08c6053f0 [2023-03-30 22:19:38,048 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f23ba24/6d1ddb22b1bc46cdaa14f04553276a5c [2023-03-30 22:19:38,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 22:19:38,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 22:19:38,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 22:19:38,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 22:19:38,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 22:19:38,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2de510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38, skipping insertion in model container [2023-03-30 22:19:38,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 22:19:38,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 22:19:38,201 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd3.i[1302,1315] [2023-03-30 22:19:38,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:19:38,210 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 22:19:38,225 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd3.i[1302,1315] [2023-03-30 22:19:38,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:19:38,235 INFO L208 MainTranslator]: Completed translation [2023-03-30 22:19:38,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38 WrapperNode [2023-03-30 22:19:38,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 22:19:38,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 22:19:38,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 22:19:38,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 22:19:38,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 22:19:38,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 22:19:38,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 22:19:38,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 22:19:38,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38" (1/1) ... [2023-03-30 22:19:38,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:19:38,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:38,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 22:19:38,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 22:19:38,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 22:19:38,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 22:19:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 22:19:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2023-03-30 22:19:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 22:19:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 22:19:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 22:19:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 22:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 22:19:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 22:19:38,417 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 22:19:38,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 22:19:38,645 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 22:19:38,649 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 22:19:38,649 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-03-30 22:19:38,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:19:38 BoogieIcfgContainer [2023-03-30 22:19:38,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 22:19:38,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 22:19:38,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 22:19:38,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 22:19:38,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:19:38" (1/3) ... [2023-03-30 22:19:38,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd123ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:19:38, skipping insertion in model container [2023-03-30 22:19:38,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:19:38" (2/3) ... [2023-03-30 22:19:38,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd123ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:19:38, skipping insertion in model container [2023-03-30 22:19:38,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:19:38" (3/3) ... [2023-03-30 22:19:38,656 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd3.i [2023-03-30 22:19:38,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 22:19:38,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 22:19:38,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 22:19:38,705 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=LoopsAndPotentialCycles, 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;@3302ac72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 22:19:38,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 22:19:38,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-30 22:19:38,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-30 22:19:38,714 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:38,715 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:38,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:38,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:38,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2117313564, now seen corresponding path program 1 times [2023-03-30 22:19:38,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:38,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187043856] [2023-03-30 22:19:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:38,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:38,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:38,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-30 22:19:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:38,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-30 22:19:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:38,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-30 22:19:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-30 22:19:38,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:38,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187043856] [2023-03-30 22:19:38,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187043856] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:19:38,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:19:38,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 22:19:38,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788565427] [2023-03-30 22:19:38,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:19:38,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:19:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:38,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:19:38,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-30 22:19:38,978 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:19:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:39,064 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2023-03-30 22:19:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:19:39,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-03-30 22:19:39,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:39,070 INFO L225 Difference]: With dead ends: 60 [2023-03-30 22:19:39,070 INFO L226 Difference]: Without dead ends: 29 [2023-03-30 22:19:39,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-30 22:19:39,077 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:39,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:19:39,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-03-30 22:19:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-03-30 22:19:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-03-30 22:19:39,116 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 32 [2023-03-30 22:19:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:39,117 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-03-30 22:19:39,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:19:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-03-30 22:19:39,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-30 22:19:39,119 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:39,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:39,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 22:19:39,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:39,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:39,121 INFO L85 PathProgramCache]: Analyzing trace with hash -111658844, now seen corresponding path program 1 times [2023-03-30 22:19:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:39,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954330652] [2023-03-30 22:19:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-30 22:19:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-30 22:19:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-30 22:19:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 22:19:39,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:39,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954330652] [2023-03-30 22:19:39,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954330652] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:39,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527528159] [2023-03-30 22:19:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:39,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:39,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:39,313 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) [2023-03-30 22:19:39,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 22:19:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 22:19:39,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-30 22:19:39,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:19:39,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527528159] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:19:39,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:19:39,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 22:19:39,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644202408] [2023-03-30 22:19:39,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:19:39,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:19:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:39,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:19:39,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:19:39,438 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:19:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:39,455 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2023-03-30 22:19:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:19:39,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-03-30 22:19:39,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:39,458 INFO L225 Difference]: With dead ends: 52 [2023-03-30 22:19:39,458 INFO L226 Difference]: Without dead ends: 31 [2023-03-30 22:19:39,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:19:39,460 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:39,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:19:39,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-03-30 22:19:39,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-03-30 22:19:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-03-30 22:19:39,473 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 32 [2023-03-30 22:19:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:39,473 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-03-30 22:19:39,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:19:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-03-30 22:19:39,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-03-30 22:19:39,476 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:39,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:39,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 22:19:39,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:39,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:39,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:39,684 INFO L85 PathProgramCache]: Analyzing trace with hash -641484538, now seen corresponding path program 1 times [2023-03-30 22:19:39,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:39,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953820685] [2023-03-30 22:19:39,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:39,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-30 22:19:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-30 22:19:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-03-30 22:19:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 22:19:39,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:39,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953820685] [2023-03-30 22:19:39,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953820685] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:39,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14944273] [2023-03-30 22:19:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:39,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:39,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:39,791 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) [2023-03-30 22:19:39,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 22:19:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:39,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 22:19:39,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-30 22:19:39,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:19:39,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14944273] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:19:39,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:19:39,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-03-30 22:19:39,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678960092] [2023-03-30 22:19:39,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:19:39,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:19:39,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:39,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:19:39,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:19:39,875 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:19:39,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:39,890 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2023-03-30 22:19:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:19:39,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-03-30 22:19:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:39,891 INFO L225 Difference]: With dead ends: 55 [2023-03-30 22:19:39,891 INFO L226 Difference]: Without dead ends: 35 [2023-03-30 22:19:39,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:19:39,892 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:39,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:19:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-03-30 22:19:39,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2023-03-30 22:19:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:39,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-03-30 22:19:39,898 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 34 [2023-03-30 22:19:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:39,899 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-03-30 22:19:39,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:19:39,899 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-03-30 22:19:39,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-03-30 22:19:39,900 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:39,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:39,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 22:19:40,106 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,SelfDestructingSolverStorable2 [2023-03-30 22:19:40,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:40,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2031158593, now seen corresponding path program 1 times [2023-03-30 22:19:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:40,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999353540] [2023-03-30 22:19:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:40,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-30 22:19:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-03-30 22:19:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-30 22:19:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-03-30 22:19:40,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:40,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999353540] [2023-03-30 22:19:40,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999353540] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:40,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041013993] [2023-03-30 22:19:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:40,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:40,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:40,223 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) [2023-03-30 22:19:40,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 22:19:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 22:19:40,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-30 22:19:40,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:19:40,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041013993] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:19:40,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:19:40,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 22:19:40,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787261833] [2023-03-30 22:19:40,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:19:40,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:19:40,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:40,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:19:40,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:19:40,297 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:19:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:40,305 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2023-03-30 22:19:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:19:40,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2023-03-30 22:19:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:40,307 INFO L225 Difference]: With dead ends: 49 [2023-03-30 22:19:40,307 INFO L226 Difference]: Without dead ends: 33 [2023-03-30 22:19:40,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:19:40,308 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:40,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:19:40,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-03-30 22:19:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2023-03-30 22:19:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2023-03-30 22:19:40,312 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 46 [2023-03-30 22:19:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:40,313 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2023-03-30 22:19:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:19:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2023-03-30 22:19:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-03-30 22:19:40,314 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:40,314 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:40,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-03-30 22:19:40,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:40,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:40,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:40,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1813645631, now seen corresponding path program 1 times [2023-03-30 22:19:40,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:40,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439289145] [2023-03-30 22:19:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:40,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-30 22:19:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-03-30 22:19:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-03-30 22:19:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-03-30 22:19:40,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439289145] [2023-03-30 22:19:40,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439289145] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482964151] [2023-03-30 22:19:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:40,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:40,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:40,658 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) [2023-03-30 22:19:40,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 22:19:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:40,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-30 22:19:40,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-03-30 22:19:40,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:19:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-03-30 22:19:40,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482964151] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:19:40,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:19:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-03-30 22:19:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670187063] [2023-03-30 22:19:40,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:19:40,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 22:19:40,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 22:19:40,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-03-30 22:19:40,799 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:40,925 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2023-03-30 22:19:40,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 22:19:40,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2023-03-30 22:19:40,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:40,926 INFO L225 Difference]: With dead ends: 61 [2023-03-30 22:19:40,926 INFO L226 Difference]: Without dead ends: 38 [2023-03-30 22:19:40,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-03-30 22:19:40,927 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:40,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 22 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:19:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-03-30 22:19:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-03-30 22:19:40,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:40,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-03-30 22:19:40,931 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 48 [2023-03-30 22:19:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:40,931 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-03-30 22:19:40,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-03-30 22:19:40,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-30 22:19:40,932 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:40,932 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:40,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-03-30 22:19:41,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:41,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:41,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1485499621, now seen corresponding path program 2 times [2023-03-30 22:19:41,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:41,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804842264] [2023-03-30 22:19:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:41,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:41,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-30 22:19:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-30 22:19:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-03-30 22:19:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-03-30 22:19:41,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:41,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804842264] [2023-03-30 22:19:41,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804842264] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:41,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971310387] [2023-03-30 22:19:41,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-30 22:19:41,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:41,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:41,246 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) [2023-03-30 22:19:41,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 22:19:41,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-30 22:19:41,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:19:41,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 22:19:41,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-03-30 22:19:41,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:19:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-03-30 22:19:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971310387] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:19:41,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:19:41,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-03-30 22:19:41,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258657874] [2023-03-30 22:19:41,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:19:41,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-30 22:19:41,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-30 22:19:41,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-03-30 22:19:41,471 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-30 22:19:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:41,671 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2023-03-30 22:19:41,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-30 22:19:41,672 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2023-03-30 22:19:41,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:41,673 INFO L225 Difference]: With dead ends: 82 [2023-03-30 22:19:41,673 INFO L226 Difference]: Without dead ends: 59 [2023-03-30 22:19:41,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2023-03-30 22:19:41,674 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 74 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:41,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 22 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:19:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-03-30 22:19:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2023-03-30 22:19:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2023-03-30 22:19:41,679 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 54 [2023-03-30 22:19:41,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:41,680 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2023-03-30 22:19:41,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-30 22:19:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2023-03-30 22:19:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-30 22:19:41,681 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:41,681 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:41,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 22:19:41,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:41,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:41,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1213292436, now seen corresponding path program 3 times [2023-03-30 22:19:41,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:41,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681405161] [2023-03-30 22:19:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:41,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-30 22:19:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-03-30 22:19:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-30 22:19:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-03-30 22:19:41,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681405161] [2023-03-30 22:19:41,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681405161] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192799334] [2023-03-30 22:19:41,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-30 22:19:41,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:41,989 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) [2023-03-30 22:19:41,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 22:19:42,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-30 22:19:42,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:19:42,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:19:42,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-03-30 22:19:42,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:19:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-03-30 22:19:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192799334] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:19:42,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:19:42,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-03-30 22:19:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733171490] [2023-03-30 22:19:42,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:19:42,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 22:19:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:42,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 22:19:42,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 22:19:42,128 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-30 22:19:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:42,295 INFO L93 Difference]: Finished difference Result 105 states and 135 transitions. [2023-03-30 22:19:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 22:19:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2023-03-30 22:19:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:42,296 INFO L225 Difference]: With dead ends: 105 [2023-03-30 22:19:42,296 INFO L226 Difference]: Without dead ends: 78 [2023-03-30 22:19:42,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-03-30 22:19:42,297 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 98 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:42,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 32 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:19:42,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-03-30 22:19:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2023-03-30 22:19:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2023-03-30 22:19:42,303 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 78 [2023-03-30 22:19:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:42,304 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2023-03-30 22:19:42,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-30 22:19:42,304 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2023-03-30 22:19:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-03-30 22:19:42,305 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:42,305 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:42,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-03-30 22:19:42,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:42,510 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:42,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:42,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1953110186, now seen corresponding path program 4 times [2023-03-30 22:19:42,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:42,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356926962] [2023-03-30 22:19:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:42,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-30 22:19:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-30 22:19:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:42,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 22:19:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2023-03-30 22:19:42,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356926962] [2023-03-30 22:19:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356926962] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826049859] [2023-03-30 22:19:42,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-30 22:19:42,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:42,735 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) [2023-03-30 22:19:42,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 22:19:42,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-30 22:19:42,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:19:42,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-30 22:19:42,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2023-03-30 22:19:42,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:19:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2023-03-30 22:19:43,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826049859] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:19:43,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:19:43,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2023-03-30 22:19:43,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857534995] [2023-03-30 22:19:43,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:19:43,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-03-30 22:19:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-03-30 22:19:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-03-30 22:19:43,074 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:43,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:43,432 INFO L93 Difference]: Finished difference Result 151 states and 194 transitions. [2023-03-30 22:19:43,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-03-30 22:19:43,433 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2023-03-30 22:19:43,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:43,434 INFO L225 Difference]: With dead ends: 151 [2023-03-30 22:19:43,434 INFO L226 Difference]: Without dead ends: 101 [2023-03-30 22:19:43,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2023-03-30 22:19:43,438 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 72 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:43,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 32 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:19:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-03-30 22:19:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-03-30 22:19:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 93 states have internal predecessors, (108), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2023-03-30 22:19:43,458 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 128 [2023-03-30 22:19:43,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:43,459 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2023-03-30 22:19:43,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2023-03-30 22:19:43,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-03-30 22:19:43,464 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:43,465 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:43,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 22:19:43,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:43,670 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:43,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:43,670 INFO L85 PathProgramCache]: Analyzing trace with hash -948106514, now seen corresponding path program 5 times [2023-03-30 22:19:43,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:43,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943289871] [2023-03-30 22:19:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-03-30 22:19:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:44,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-03-30 22:19:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-03-30 22:19:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2023-03-30 22:19:44,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:44,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943289871] [2023-03-30 22:19:44,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943289871] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:44,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651722508] [2023-03-30 22:19:44,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-03-30 22:19:44,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:44,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:44,230 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) [2023-03-30 22:19:44,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 22:19:45,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-03-30 22:19:45,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:19:45,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 22:19:45,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2023-03-30 22:19:45,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:19:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2023-03-30 22:19:45,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651722508] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:19:45,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:19:45,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 9, 9] total 40 [2023-03-30 22:19:45,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469571690] [2023-03-30 22:19:45,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:19:45,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-03-30 22:19:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-03-30 22:19:45,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1139, Unknown=0, NotChecked=0, Total=1560 [2023-03-30 22:19:45,334 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand has 40 states, 40 states have (on average 3.25) internal successors, (130), 39 states have internal predecessors, (130), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:46,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:46,119 INFO L93 Difference]: Finished difference Result 194 states and 253 transitions. [2023-03-30 22:19:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-03-30 22:19:46,120 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.25) internal successors, (130), 39 states have internal predecessors, (130), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 152 [2023-03-30 22:19:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:46,120 INFO L225 Difference]: With dead ends: 194 [2023-03-30 22:19:46,121 INFO L226 Difference]: Without dead ends: 144 [2023-03-30 22:19:46,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1257, Invalid=4595, Unknown=0, NotChecked=0, Total=5852 [2023-03-30 22:19:46,123 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 271 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:46,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 37 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-30 22:19:46,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-03-30 22:19:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2023-03-30 22:19:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 135 states have internal predecessors, (166), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 175 transitions. [2023-03-30 22:19:46,129 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 175 transitions. Word has length 152 [2023-03-30 22:19:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:46,129 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 175 transitions. [2023-03-30 22:19:46,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.25) internal successors, (130), 39 states have internal predecessors, (130), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 175 transitions. [2023-03-30 22:19:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-03-30 22:19:46,131 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:46,131 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 23, 23, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:46,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-30 22:19:46,338 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,SelfDestructingSolverStorable8 [2023-03-30 22:19:46,338 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:46,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash -222844632, now seen corresponding path program 6 times [2023-03-30 22:19:46,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:46,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521435593] [2023-03-30 22:19:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:46,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-30 22:19:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-03-30 22:19:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-03-30 22:19:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4118 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 3589 trivial. 0 not checked. [2023-03-30 22:19:47,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:47,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521435593] [2023-03-30 22:19:47,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521435593] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:47,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817227447] [2023-03-30 22:19:47,096 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-03-30 22:19:47,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:47,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:47,097 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) [2023-03-30 22:19:47,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-30 22:19:47,208 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-03-30 22:19:47,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:19:47,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:19:47,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4118 backedges. 1634 proven. 4 refuted. 0 times theorem prover too weak. 2480 trivial. 0 not checked. [2023-03-30 22:19:47,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:19:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4118 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4114 trivial. 0 not checked. [2023-03-30 22:19:47,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817227447] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:19:47,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:19:47,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5, 5] total 33 [2023-03-30 22:19:47,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989755187] [2023-03-30 22:19:47,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:19:47,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-03-30 22:19:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-03-30 22:19:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=702, Unknown=0, NotChecked=0, Total=1056 [2023-03-30 22:19:47,309 INFO L87 Difference]: Start difference. First operand 143 states and 175 transitions. Second operand has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 32 states have internal predecessors, (93), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:47,815 INFO L93 Difference]: Finished difference Result 244 states and 312 transitions. [2023-03-30 22:19:47,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-03-30 22:19:47,816 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 32 states have internal predecessors, (93), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 250 [2023-03-30 22:19:47,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:47,817 INFO L225 Difference]: With dead ends: 244 [2023-03-30 22:19:47,817 INFO L226 Difference]: Without dead ends: 154 [2023-03-30 22:19:47,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1056, Invalid=2850, Unknown=0, NotChecked=0, Total=3906 [2023-03-30 22:19:47,819 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 89 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:47,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 22 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:19:47,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-03-30 22:19:47,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2023-03-30 22:19:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 145 states have (on average 1.2137931034482758) internal successors, (176), 145 states have internal predecessors, (176), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 185 transitions. [2023-03-30 22:19:47,825 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 185 transitions. Word has length 250 [2023-03-30 22:19:47,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:47,826 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 185 transitions. [2023-03-30 22:19:47,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 32 states have internal predecessors, (93), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:47,826 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 185 transitions. [2023-03-30 22:19:47,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-03-30 22:19:47,827 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:47,827 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 24, 24, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:47,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-03-30 22:19:48,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-03-30 22:19:48,033 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:48,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1826131966, now seen corresponding path program 7 times [2023-03-30 22:19:48,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:48,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180845363] [2023-03-30 22:19:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:48,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:48,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:48,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-03-30 22:19:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:48,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-30 22:19:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:48,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-03-30 22:19:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4197 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2023-03-30 22:19:48,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:48,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180845363] [2023-03-30 22:19:48,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180845363] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:48,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050246380] [2023-03-30 22:19:48,653 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-03-30 22:19:48,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:48,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:48,654 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) [2023-03-30 22:19:48,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-03-30 22:19:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:48,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 26 conjunts are in the unsatisfiable core [2023-03-30 22:19:48,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4197 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2023-03-30 22:19:48,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:19:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4197 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2023-03-30 22:19:49,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050246380] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:19:49,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:19:49,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 54 [2023-03-30 22:19:49,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875113097] [2023-03-30 22:19:49,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:19:49,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-03-30 22:19:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:49,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-03-30 22:19:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2023-03-30 22:19:49,574 INFO L87 Difference]: Start difference. First operand 153 states and 185 transitions. Second operand has 54 states, 54 states have (on average 2.425925925925926) internal successors, (131), 53 states have internal predecessors, (131), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:50,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:50,605 INFO L93 Difference]: Finished difference Result 303 states and 392 transitions. [2023-03-30 22:19:50,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-03-30 22:19:50,605 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.425925925925926) internal successors, (131), 53 states have internal predecessors, (131), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 260 [2023-03-30 22:19:50,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:50,606 INFO L225 Difference]: With dead ends: 303 [2023-03-30 22:19:50,606 INFO L226 Difference]: Without dead ends: 205 [2023-03-30 22:19:50,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2023-03-30 22:19:50,609 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 128 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:50,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 32 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:19:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-03-30 22:19:50,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-03-30 22:19:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 197 states have (on average 1.1573604060913705) internal successors, (228), 197 states have internal predecessors, (228), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 237 transitions. [2023-03-30 22:19:50,615 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 237 transitions. Word has length 260 [2023-03-30 22:19:50,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:50,615 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 237 transitions. [2023-03-30 22:19:50,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.425925925925926) internal successors, (131), 53 states have internal predecessors, (131), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 237 transitions. [2023-03-30 22:19:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-03-30 22:19:50,627 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:50,627 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 42, 42, 42, 42, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:50,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-03-30 22:19:50,833 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,SelfDestructingSolverStorable10 [2023-03-30 22:19:50,833 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:50,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:50,833 INFO L85 PathProgramCache]: Analyzing trace with hash 323321206, now seen corresponding path program 8 times [2023-03-30 22:19:50,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:50,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708415661] [2023-03-30 22:19:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:50,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:52,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:19:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:52,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-03-30 22:19:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:52,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-03-30 22:19:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-03-30 22:19:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:19:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2023-03-30 22:19:52,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:19:52,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708415661] [2023-03-30 22:19:52,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708415661] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:19:52,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819969268] [2023-03-30 22:19:52,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-30 22:19:52,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:19:52,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:19:52,721 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) [2023-03-30 22:19:52,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-03-30 22:19:52,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-30 22:19:52,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:19:52,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 52 conjunts are in the unsatisfiable core [2023-03-30 22:19:52,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:19:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2023-03-30 22:19:53,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:19:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2023-03-30 22:19:55,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819969268] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:19:55,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:19:55,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 106 [2023-03-30 22:19:55,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442705585] [2023-03-30 22:19:55,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:19:55,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-03-30 22:19:55,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:19:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-03-30 22:19:55,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2023-03-30 22:19:55,259 INFO L87 Difference]: Start difference. First operand 205 states and 237 transitions. Second operand has 106 states, 106 states have (on average 2.2169811320754715) internal successors, (235), 105 states have internal predecessors, (235), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:58,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:19:58,346 INFO L93 Difference]: Finished difference Result 407 states and 522 transitions. [2023-03-30 22:19:58,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-03-30 22:19:58,346 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.2169811320754715) internal successors, (235), 105 states have internal predecessors, (235), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 312 [2023-03-30 22:19:58,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:19:58,350 INFO L225 Difference]: With dead ends: 407 [2023-03-30 22:19:58,350 INFO L226 Difference]: Without dead ends: 309 [2023-03-30 22:19:58,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6726 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2023-03-30 22:19:58,358 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 232 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-30 22:19:58,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 42 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-30 22:19:58,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-03-30 22:19:58,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2023-03-30 22:19:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 301 states have (on average 1.1029900332225913) internal successors, (332), 301 states have internal predecessors, (332), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:19:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 341 transitions. [2023-03-30 22:19:58,391 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 341 transitions. Word has length 312 [2023-03-30 22:19:58,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:19:58,391 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 341 transitions. [2023-03-30 22:19:58,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.2169811320754715) internal successors, (235), 105 states have internal predecessors, (235), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:19:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 341 transitions. [2023-03-30 22:19:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-03-30 22:19:58,415 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:19:58,415 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 42, 42, 42, 42, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:19:58,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-03-30 22:19:58,615 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,SelfDestructingSolverStorable11 [2023-03-30 22:19:58,615 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:19:58,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:19:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1893360222, now seen corresponding path program 9 times [2023-03-30 22:19:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:19:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532303862] [2023-03-30 22:19:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:19:58,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:19:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:20:03,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:20:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:20:03,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-03-30 22:20:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:20:03,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-03-30 22:20:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:20:03,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2023-03-30 22:20:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:20:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2023-03-30 22:20:03,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:20:03,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532303862] [2023-03-30 22:20:03,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532303862] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:20:03,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13456715] [2023-03-30 22:20:03,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-30 22:20:03,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:20:03,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:20:03,372 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) [2023-03-30 22:20:03,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-03-30 22:20:03,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-03-30 22:20:03,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:20:03,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 22:20:03,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:20:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 1634 proven. 36 refuted. 0 times theorem prover too weak. 12355 trivial. 0 not checked. [2023-03-30 22:20:03,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:20:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 13989 trivial. 0 not checked. [2023-03-30 22:20:04,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13456715] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:20:04,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:20:04,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 9, 9] total 120 [2023-03-30 22:20:04,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696384860] [2023-03-30 22:20:04,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:20:04,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2023-03-30 22:20:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:20:04,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2023-03-30 22:20:04,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5581, Invalid=8699, Unknown=0, NotChecked=0, Total=14280 [2023-03-30 22:20:04,159 INFO L87 Difference]: Start difference. First operand 309 states and 341 transitions. Second operand has 120 states, 120 states have (on average 2.225) internal successors, (267), 119 states have internal predecessors, (267), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:20:08,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:20:08,391 INFO L93 Difference]: Finished difference Result 426 states and 498 transitions. [2023-03-30 22:20:08,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-03-30 22:20:08,391 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.225) internal successors, (267), 119 states have internal predecessors, (267), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 416 [2023-03-30 22:20:08,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:20:08,394 INFO L225 Difference]: With dead ends: 426 [2023-03-30 22:20:08,394 INFO L226 Difference]: Without dead ends: 328 [2023-03-30 22:20:08,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8949 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=16737, Invalid=39195, Unknown=0, NotChecked=0, Total=55932 [2023-03-30 22:20:08,410 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 263 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-30 22:20:08,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 42 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-30 22:20:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-03-30 22:20:08,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 327. [2023-03-30 22:20:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 319 states have (on average 1.09717868338558) internal successors, (350), 319 states have internal predecessors, (350), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:20:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 359 transitions. [2023-03-30 22:20:08,419 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 359 transitions. Word has length 416 [2023-03-30 22:20:08,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:20:08,420 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 359 transitions. [2023-03-30 22:20:08,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.225) internal successors, (267), 119 states have internal predecessors, (267), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:20:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 359 transitions. [2023-03-30 22:20:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-03-30 22:20:08,422 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:20:08,423 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 42, 42, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:20:08,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-03-30 22:20:08,627 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,SelfDestructingSolverStorable12 [2023-03-30 22:20:08,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:20:08,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:20:08,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1022032048, now seen corresponding path program 10 times [2023-03-30 22:20:08,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:20:08,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493075327] [2023-03-30 22:20:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:20:08,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:20:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:20:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:20:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:20:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-03-30 22:20:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:20:14,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-03-30 22:20:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:20:14,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-03-30 22:20:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:20:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14390 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2023-03-30 22:20:14,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:20:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493075327] [2023-03-30 22:20:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493075327] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:20:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513791973] [2023-03-30 22:20:14,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-30 22:20:14,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:20:14,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:20:14,146 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:20:14,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-03-30 22:20:14,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-30 22:20:14,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:20:14,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 105 conjunts are in the unsatisfiable core [2023-03-30 22:20:14,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:20:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14390 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2023-03-30 22:20:14,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:20:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14390 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2023-03-30 22:20:21,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513791973] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:20:21,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:20:21,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106, 106] total 212 [2023-03-30 22:20:21,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203920407] [2023-03-30 22:20:21,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:20:21,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 212 states [2023-03-30 22:20:21,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:20:21,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2023-03-30 22:20:21,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22157, Invalid=22575, Unknown=0, NotChecked=0, Total=44732 [2023-03-30 22:20:21,569 INFO L87 Difference]: Start difference. First operand 327 states and 359 transitions. Second operand has 212 states, 212 states have (on average 2.108490566037736) internal successors, (447), 211 states have internal predecessors, (447), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:20:31,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:20:31,973 INFO L93 Difference]: Finished difference Result 651 states and 819 transitions. [2023-03-30 22:20:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-03-30 22:20:31,979 INFO L78 Accepts]: Start accepts. Automaton has has 212 states, 212 states have (on average 2.108490566037736) internal successors, (447), 211 states have internal predecessors, (447), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 434 [2023-03-30 22:20:31,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:20:31,981 INFO L225 Difference]: With dead ends: 651 [2023-03-30 22:20:31,981 INFO L226 Difference]: Without dead ends: 537 [2023-03-30 22:20:31,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 418 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27502 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=66046, Invalid=109934, Unknown=0, NotChecked=0, Total=175980 [2023-03-30 22:20:31,990 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 444 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-30 22:20:31,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 27 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-30 22:20:31,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-03-30 22:20:32,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2023-03-30 22:20:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 529 states have (on average 1.0586011342155008) internal successors, (560), 529 states have internal predecessors, (560), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:20:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 569 transitions. [2023-03-30 22:20:32,005 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 569 transitions. Word has length 434 [2023-03-30 22:20:32,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:20:32,005 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 569 transitions. [2023-03-30 22:20:32,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 212 states, 212 states have (on average 2.108490566037736) internal successors, (447), 211 states have internal predecessors, (447), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:20:32,006 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 569 transitions. [2023-03-30 22:20:32,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2023-03-30 22:20:32,009 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:20:32,010 INFO L195 NwaCegarLoop]: trace histogram [208, 208, 42, 42, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:20:32,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-03-30 22:20:32,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-03-30 22:20:32,212 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:20:32,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:20:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1706201502, now seen corresponding path program 11 times [2023-03-30 22:20:32,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:20:32,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839882799] [2023-03-30 22:20:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:20:32,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:20:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat