/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/eca-rers2012/Problem17_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:29:31,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:29:31,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:29:31,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 23:29:31,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 23:29:31,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 23:29:31,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 23:29:31,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 23:29:31,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 23:29:31,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 23:29:31,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 23:29:31,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 23:29:31,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:29:31,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:29:31,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:29:31,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:29:31,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:29:31,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:29:31,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:29:31,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:29:31,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:29:31,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:29:31,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:29:31,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:29:31,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 23:29:31,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 23:29:31,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 23:29:31,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 23:29:31,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 23:29:31,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 23:29:31,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 23:29:31,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 23:29:31,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 23:29:31,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 23:29:31,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 23:29:31,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 23:29:31,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 23:29:31,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 23:29:31,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:29:31,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:29:31,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:29:31,066 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 [2023-04-01 23:29:31,079 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:29:31,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:29:31,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:29:31,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:29:31,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:29:31,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:29:31,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:29:31,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:29:31,080 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:29:31,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:29:31,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:29:31,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:29:31,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:29:31,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:29:31,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:29:31,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:29:31,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:29:31,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:29:31,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:29:31,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:29:31,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:29:31,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:29:31,082 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:29:31,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:29:31,083 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:29:31,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:29:31,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:29:31,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:29:31,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:29:31,221 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:29:31,221 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:29:31,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label39.c [2023-04-01 23:29:32,093 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:29:32,438 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:29:32,439 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label39.c [2023-04-01 23:29:32,451 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0737978/6cd855ac840647ed9cfee87e9ad5e57f/FLAG816e094f7 [2023-04-01 23:29:32,460 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0737978/6cd855ac840647ed9cfee87e9ad5e57f [2023-04-01 23:29:32,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:29:32,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:29:32,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:29:32,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:29:32,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:29:32,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:29:32" (1/1) ... [2023-04-01 23:29:32,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c0aa44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:32, skipping insertion in model container [2023-04-01 23:29:32,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:29:32" (1/1) ... [2023-04-01 23:29:32,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:29:32,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:29:32,752 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/eca-rers2012/Problem17_label39.c[9366,9379] [2023-04-01 23:29:33,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:29:33,121 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:29:33,145 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/eca-rers2012/Problem17_label39.c[9366,9379] [2023-04-01 23:29:33,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:29:33,305 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:29:33,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33 WrapperNode [2023-04-01 23:29:33,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:29:33,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:29:33,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:29:33,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:29:33,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33" (1/1) ... [2023-04-01 23:29:33,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33" (1/1) ... [2023-04-01 23:29:33,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33" (1/1) ... [2023-04-01 23:29:33,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33" (1/1) ... [2023-04-01 23:29:33,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33" (1/1) ... [2023-04-01 23:29:33,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33" (1/1) ... [2023-04-01 23:29:33,448 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33" (1/1) ... [2023-04-01 23:29:33,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33" (1/1) ... [2023-04-01 23:29:33,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:29:33,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:29:33,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:29:33,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:29:33,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33" (1/1) ... [2023-04-01 23:29:33,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:29:33,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:29:33,504 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) [2023-04-01 23:29:33,505 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 [2023-04-01 23:29:33,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:29:33,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:29:33,539 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:29:33,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:29:33,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:29:33,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:29:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:29:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:29:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:29:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:29:33,606 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:29:33,607 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:29:35,713 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:29:35,720 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:29:35,721 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:29:35,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:29:35 BoogieIcfgContainer [2023-04-01 23:29:35,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:29:35,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:29:35,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:29:35,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:29:35,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:29:32" (1/3) ... [2023-04-01 23:29:35,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4710fefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:29:35, skipping insertion in model container [2023-04-01 23:29:35,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:29:33" (2/3) ... [2023-04-01 23:29:35,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4710fefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:29:35, skipping insertion in model container [2023-04-01 23:29:35,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:29:35" (3/3) ... [2023-04-01 23:29:35,727 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label39.c [2023-04-01 23:29:35,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:29:35,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:29:35,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:29:35,778 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;@2d4e303a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:29:35,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:29:35,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 593 states have (on average 1.7993254637436762) internal successors, (1067), 594 states have internal predecessors, (1067), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:29:35,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 23:29:35,789 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:29:35,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:29:35,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:29:35,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:29:35,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1326199414, now seen corresponding path program 1 times [2023-04-01 23:29:35,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:29:35,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422408725] [2023-04-01 23:29:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:35,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:29:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:29:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:29:36,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:29:36,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422408725] [2023-04-01 23:29:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422408725] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:29:36,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:29:36,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:29:36,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743067067] [2023-04-01 23:29:36,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:29:36,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:29:36,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:29:36,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:29:36,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:29:36,190 INFO L87 Difference]: Start difference. First operand has 603 states, 593 states have (on average 1.7993254637436762) internal successors, (1067), 594 states have internal predecessors, (1067), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:29:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:29:39,310 INFO L93 Difference]: Finished difference Result 1729 states and 3137 transitions. [2023-04-01 23:29:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:29:39,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-01 23:29:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:29:39,335 INFO L225 Difference]: With dead ends: 1729 [2023-04-01 23:29:39,335 INFO L226 Difference]: Without dead ends: 1047 [2023-04-01 23:29:39,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:29:39,347 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1585 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:29:39,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 137 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 23:29:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2023-04-01 23:29:39,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1028. [2023-04-01 23:29:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1012 states have (on average 1.7233201581027668) internal successors, (1744), 1014 states have internal predecessors, (1744), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 23:29:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1763 transitions. [2023-04-01 23:29:39,435 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1763 transitions. Word has length 69 [2023-04-01 23:29:39,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:29:39,436 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1763 transitions. [2023-04-01 23:29:39,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:29:39,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1763 transitions. [2023-04-01 23:29:39,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-01 23:29:39,439 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:29:39,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:29:39,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:29:39,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:29:39,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:29:39,442 INFO L85 PathProgramCache]: Analyzing trace with hash 847398539, now seen corresponding path program 1 times [2023-04-01 23:29:39,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:29:39,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893056945] [2023-04-01 23:29:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:39,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:29:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:29:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:39,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:29:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:29:39,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:29:39,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893056945] [2023-04-01 23:29:39,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893056945] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:29:39,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:29:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:29:39,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802985715] [2023-04-01 23:29:39,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:29:39,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:29:39,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:29:39,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:29:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:29:39,797 INFO L87 Difference]: Start difference. First operand 1028 states and 1763 transitions. Second operand has 7 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:29:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:29:43,152 INFO L93 Difference]: Finished difference Result 3033 states and 5275 transitions. [2023-04-01 23:29:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:29:43,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 138 [2023-04-01 23:29:43,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:29:43,162 INFO L225 Difference]: With dead ends: 3033 [2023-04-01 23:29:43,163 INFO L226 Difference]: Without dead ends: 2011 [2023-04-01 23:29:43,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:29:43,165 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 3329 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 3437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:29:43,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3329 Valid, 322 Invalid, 3437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 3028 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 23:29:43,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2023-04-01 23:29:43,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1961. [2023-04-01 23:29:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1921 states have (on average 1.5033836543466945) internal successors, (2888), 1931 states have internal predecessors, (2888), 10 states have call successors, (10), 10 states have call predecessors, (10), 29 states have return successors, (64), 19 states have call predecessors, (64), 9 states have call successors, (64) [2023-04-01 23:29:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2962 transitions. [2023-04-01 23:29:43,203 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2962 transitions. Word has length 138 [2023-04-01 23:29:43,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:29:43,204 INFO L495 AbstractCegarLoop]: Abstraction has 1961 states and 2962 transitions. [2023-04-01 23:29:43,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:29:43,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2962 transitions. [2023-04-01 23:29:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-01 23:29:43,205 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:29:43,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:29:43,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:29:43,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:29:43,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:29:43,206 INFO L85 PathProgramCache]: Analyzing trace with hash -901199153, now seen corresponding path program 1 times [2023-04-01 23:29:43,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:29:43,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215326694] [2023-04-01 23:29:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:43,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:29:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:29:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:29:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:29:43,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:29:43,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215326694] [2023-04-01 23:29:43,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215326694] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:29:43,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:29:43,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:29:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365934475] [2023-04-01 23:29:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:29:43,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:29:43,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:29:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:29:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:29:43,425 INFO L87 Difference]: Start difference. First operand 1961 states and 2962 transitions. Second operand has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:29:46,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:29:46,311 INFO L93 Difference]: Finished difference Result 5847 states and 8972 transitions. [2023-04-01 23:29:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:29:46,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 140 [2023-04-01 23:29:46,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:29:46,326 INFO L225 Difference]: With dead ends: 5847 [2023-04-01 23:29:46,326 INFO L226 Difference]: Without dead ends: 3892 [2023-04-01 23:29:46,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:29:46,334 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 3299 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3299 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 3477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:29:46,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3299 Valid, 292 Invalid, 3477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 23:29:46,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2023-04-01 23:29:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 2890. [2023-04-01 23:29:46,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2890 states, 2818 states have (on average 1.3474095102909864) internal successors, (3797), 2844 states have internal predecessors, (3797), 14 states have call successors, (14), 14 states have call predecessors, (14), 57 states have return successors, (143), 31 states have call predecessors, (143), 13 states have call successors, (143) [2023-04-01 23:29:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2890 states to 2890 states and 3954 transitions. [2023-04-01 23:29:46,396 INFO L78 Accepts]: Start accepts. Automaton has 2890 states and 3954 transitions. Word has length 140 [2023-04-01 23:29:46,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:29:46,397 INFO L495 AbstractCegarLoop]: Abstraction has 2890 states and 3954 transitions. [2023-04-01 23:29:46,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:29:46,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2890 states and 3954 transitions. [2023-04-01 23:29:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-01 23:29:46,401 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:29:46,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:29:46,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:29:46,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:29:46,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:29:46,402 INFO L85 PathProgramCache]: Analyzing trace with hash -444575811, now seen corresponding path program 1 times [2023-04-01 23:29:46,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:29:46,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025851122] [2023-04-01 23:29:46,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:46,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:29:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:29:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:46,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:29:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:29:46,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:29:46,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025851122] [2023-04-01 23:29:46,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025851122] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:29:46,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881858375] [2023-04-01 23:29:46,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:46,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:29:46,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:29:46,650 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) [2023-04-01 23:29:46,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:29:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:46,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 23:29:46,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:29:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:29:47,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:29:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:29:47,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881858375] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 23:29:47,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:29:47,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 10 [2023-04-01 23:29:47,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412964039] [2023-04-01 23:29:47,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:29:47,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:29:47,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:29:47,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:29:47,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:29:47,178 INFO L87 Difference]: Start difference. First operand 2890 states and 3954 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:29:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:29:49,238 INFO L93 Difference]: Finished difference Result 7576 states and 10619 transitions. [2023-04-01 23:29:49,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:29:49,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 143 [2023-04-01 23:29:49,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:29:49,251 INFO L225 Difference]: With dead ends: 7576 [2023-04-01 23:29:49,251 INFO L226 Difference]: Without dead ends: 3780 [2023-04-01 23:29:49,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:29:49,260 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 495 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:29:49,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 800 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 23:29:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2023-04-01 23:29:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3766. [2023-04-01 23:29:49,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3677 states have (on average 1.2531955398422627) internal successors, (4608), 3708 states have internal predecessors, (4608), 18 states have call successors, (18), 18 states have call predecessors, (18), 70 states have return successors, (253), 39 states have call predecessors, (253), 17 states have call successors, (253) [2023-04-01 23:29:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 4879 transitions. [2023-04-01 23:29:49,324 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 4879 transitions. Word has length 143 [2023-04-01 23:29:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:29:49,325 INFO L495 AbstractCegarLoop]: Abstraction has 3766 states and 4879 transitions. [2023-04-01 23:29:49,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:29:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 4879 transitions. [2023-04-01 23:29:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-04-01 23:29:49,328 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:29:49,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:29:49,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 23:29:49,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:29:49,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:29:49,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:29:49,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1421265458, now seen corresponding path program 1 times [2023-04-01 23:29:49,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:29:49,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763833743] [2023-04-01 23:29:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:49,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:29:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:29:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:29:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:49,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:29:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:29:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:29:49,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763833743] [2023-04-01 23:29:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763833743] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:29:49,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031534842] [2023-04-01 23:29:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:49,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:29:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:29:49,857 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) [2023-04-01 23:29:49,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:29:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:49,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:29:49,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:29:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:29:50,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:29:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:29:50,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031534842] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:29:50,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:29:50,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:29:50,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098124062] [2023-04-01 23:29:50,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:29:50,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:29:50,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:29:50,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:29:50,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:29:50,349 INFO L87 Difference]: Start difference. First operand 3766 states and 4879 transitions. Second operand has 11 states, 11 states have (on average 33.0) internal successors, (363), 9 states have internal predecessors, (363), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:29:53,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:29:53,869 INFO L93 Difference]: Finished difference Result 10283 states and 13952 transitions. [2023-04-01 23:29:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:29:53,870 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.0) internal successors, (363), 9 states have internal predecessors, (363), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 229 [2023-04-01 23:29:53,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:29:53,886 INFO L225 Difference]: With dead ends: 10283 [2023-04-01 23:29:53,886 INFO L226 Difference]: Without dead ends: 6523 [2023-04-01 23:29:53,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:29:53,892 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 5066 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 4572 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5066 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 5436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 4572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:29:53,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5066 Valid, 315 Invalid, 5436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 4572 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 23:29:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2023-04-01 23:29:53,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6500. [2023-04-01 23:29:53,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6500 states, 6331 states have (on average 1.2162375612067604) internal successors, (7700), 6392 states have internal predecessors, (7700), 30 states have call successors, (30), 30 states have call predecessors, (30), 138 states have return successors, (661), 77 states have call predecessors, (661), 29 states have call successors, (661) [2023-04-01 23:29:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6500 states to 6500 states and 8391 transitions. [2023-04-01 23:29:53,982 INFO L78 Accepts]: Start accepts. Automaton has 6500 states and 8391 transitions. Word has length 229 [2023-04-01 23:29:53,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:29:53,982 INFO L495 AbstractCegarLoop]: Abstraction has 6500 states and 8391 transitions. [2023-04-01 23:29:53,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.0) internal successors, (363), 9 states have internal predecessors, (363), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:29:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6500 states and 8391 transitions. [2023-04-01 23:29:53,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-04-01 23:29:53,985 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:29:53,986 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:29:53,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 23:29:54,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:29:54,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:29:54,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:29:54,190 INFO L85 PathProgramCache]: Analyzing trace with hash -912751016, now seen corresponding path program 1 times [2023-04-01 23:29:54,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:29:54,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123748004] [2023-04-01 23:29:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:54,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:29:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:29:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:54,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:29:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:29:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:54,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-01 23:29:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-04-01 23:29:54,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:29:54,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123748004] [2023-04-01 23:29:54,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123748004] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:29:54,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744310000] [2023-04-01 23:29:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:54,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:29:54,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:29:54,507 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) [2023-04-01 23:29:54,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:29:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:54,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:29:54,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:29:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-04-01 23:29:54,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:29:54,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744310000] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:29:54,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:29:54,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:29:54,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660792742] [2023-04-01 23:29:54,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:29:54,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:29:54,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:29:54,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:29:54,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:29:54,722 INFO L87 Difference]: Start difference. First operand 6500 states and 8391 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:29:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:29:56,123 INFO L93 Difference]: Finished difference Result 19154 states and 25358 transitions. [2023-04-01 23:29:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:29:56,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 313 [2023-04-01 23:29:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:29:56,178 INFO L225 Difference]: With dead ends: 19154 [2023-04-01 23:29:56,178 INFO L226 Difference]: Without dead ends: 11766 [2023-04-01 23:29:56,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:29:56,193 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 387 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:29:56,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 850 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 23:29:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11766 states. [2023-04-01 23:29:56,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11766 to 11766. [2023-04-01 23:29:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11766 states, 11519 states have (on average 1.1422866568278496) internal successors, (13158), 11600 states have internal predecessors, (13158), 54 states have call successors, (54), 54 states have call predecessors, (54), 192 states have return successors, (1166), 111 states have call predecessors, (1166), 53 states have call successors, (1166) [2023-04-01 23:29:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11766 states to 11766 states and 14378 transitions. [2023-04-01 23:29:56,365 INFO L78 Accepts]: Start accepts. Automaton has 11766 states and 14378 transitions. Word has length 313 [2023-04-01 23:29:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:29:56,366 INFO L495 AbstractCegarLoop]: Abstraction has 11766 states and 14378 transitions. [2023-04-01 23:29:56,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:29:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 11766 states and 14378 transitions. [2023-04-01 23:29:56,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-04-01 23:29:56,371 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:29:56,372 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:29:56,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 23:29:56,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:29:56,576 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:29:56,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:29:56,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1589901043, now seen corresponding path program 1 times [2023-04-01 23:29:56,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:29:56,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133306994] [2023-04-01 23:29:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:56,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:29:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:29:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:29:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:29:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-01 23:29:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 189 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-04-01 23:29:57,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:29:57,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133306994] [2023-04-01 23:29:57,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133306994] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:29:57,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806034694] [2023-04-01 23:29:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:57,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:29:57,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:29:57,045 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) [2023-04-01 23:29:57,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:29:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:57,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 23:29:57,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:29:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-04-01 23:29:57,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:29:59,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806034694] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:29:59,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:29:59,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2023-04-01 23:29:59,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450362137] [2023-04-01 23:29:59,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 23:29:59,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:29:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:29:59,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:29:59,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:29:59,079 INFO L87 Difference]: Start difference. First operand 11766 states and 14378 transitions. Second operand has 11 states, 11 states have (on average 41.54545454545455) internal successors, (457), 9 states have internal predecessors, (457), 5 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 23:30:03,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:06,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:08,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:11,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:16,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:19,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:21,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:24,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:26,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:28,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:29,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:32,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:34,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:37,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:39,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:41,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:43,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:45,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:48,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:50,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:53,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:56,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:58,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:01,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:03,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:05,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:07,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:09,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:12,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:14,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:16,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:18,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:22,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:22,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:31:22,184 INFO L93 Difference]: Finished difference Result 41594 states and 54262 transitions. [2023-04-01 23:31:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-01 23:31:22,185 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 41.54545454545455) internal successors, (457), 9 states have internal predecessors, (457), 5 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 353 [2023-04-01 23:31:22,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:31:22,267 INFO L225 Difference]: With dead ends: 41594 [2023-04-01 23:31:22,267 INFO L226 Difference]: Without dead ends: 28940 [2023-04-01 23:31:22,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 644 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=543, Invalid=2007, Unknown=0, NotChecked=0, Total=2550 [2023-04-01 23:31:22,288 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 6761 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 7563 mSolverCounterSat, 2019 mSolverCounterUnsat, 32 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6761 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 9614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2019 IncrementalHoareTripleChecker+Valid, 7563 IncrementalHoareTripleChecker+Invalid, 32 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:31:22,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6761 Valid, 478 Invalid, 9614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2019 Valid, 7563 Invalid, 32 Unknown, 0 Unchecked, 79.6s Time] [2023-04-01 23:31:22,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28940 states. [2023-04-01 23:31:22,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28940 to 26098. [2023-04-01 23:31:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26098 states, 25530 states have (on average 1.1390129259694477) internal successors, (29079), 25744 states have internal predecessors, (29079), 118 states have call successors, (118), 118 states have call predecessors, (118), 449 states have return successors, (4083), 235 states have call predecessors, (4083), 117 states have call successors, (4083) [2023-04-01 23:31:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26098 states to 26098 states and 33280 transitions. [2023-04-01 23:31:22,719 INFO L78 Accepts]: Start accepts. Automaton has 26098 states and 33280 transitions. Word has length 353 [2023-04-01 23:31:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:31:22,719 INFO L495 AbstractCegarLoop]: Abstraction has 26098 states and 33280 transitions. [2023-04-01 23:31:22,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 41.54545454545455) internal successors, (457), 9 states have internal predecessors, (457), 5 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 23:31:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 26098 states and 33280 transitions. [2023-04-01 23:31:22,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-04-01 23:31:22,727 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:31:22,727 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:31:22,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 23:31:22,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:22,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:31:22,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:31:22,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1207764547, now seen corresponding path program 1 times [2023-04-01 23:31:22,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:31:22,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32946600] [2023-04-01 23:31:22,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:22,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:31:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:23,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:31:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:31:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:23,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:31:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:23,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-04-01 23:31:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 23:31:23,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:31:23,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32946600] [2023-04-01 23:31:23,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32946600] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:31:23,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783404749] [2023-04-01 23:31:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:23,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:23,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:31:23,472 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) [2023-04-01 23:31:23,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:31:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:23,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:31:23,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:31:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-01 23:31:23,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:31:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-01 23:31:24,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783404749] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:31:24,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:31:24,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2023-04-01 23:31:24,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667342822] [2023-04-01 23:31:24,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:31:24,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:31:24,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:31:24,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:31:24,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:31:24,048 INFO L87 Difference]: Start difference. First operand 26098 states and 33280 transitions. Second operand has 12 states, 12 states have (on average 38.833333333333336) internal successors, (466), 10 states have internal predecessors, (466), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 23:31:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:31:33,392 INFO L93 Difference]: Finished difference Result 76109 states and 98258 transitions. [2023-04-01 23:31:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-01 23:31:33,393 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 38.833333333333336) internal successors, (466), 10 states have internal predecessors, (466), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 407 [2023-04-01 23:31:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:31:33,510 INFO L225 Difference]: With dead ends: 76109 [2023-04-01 23:31:33,510 INFO L226 Difference]: Without dead ends: 48693 [2023-04-01 23:31:33,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 832 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2023-04-01 23:31:33,554 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 4272 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 7936 mSolverCounterSat, 1226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4274 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 9162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1226 IncrementalHoareTripleChecker+Valid, 7936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:31:33,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4274 Valid, 571 Invalid, 9162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1226 Valid, 7936 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-04-01 23:31:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48693 states. [2023-04-01 23:31:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48693 to 46905. [2023-04-01 23:31:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46905 states, 45974 states have (on average 1.1286379257841388) internal successors, (51888), 46316 states have internal predecessors, (51888), 212 states have call successors, (212), 212 states have call predecessors, (212), 718 states have return successors, (7925), 376 states have call predecessors, (7925), 211 states have call successors, (7925) [2023-04-01 23:31:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46905 states to 46905 states and 60025 transitions. [2023-04-01 23:31:34,407 INFO L78 Accepts]: Start accepts. Automaton has 46905 states and 60025 transitions. Word has length 407 [2023-04-01 23:31:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:31:34,408 INFO L495 AbstractCegarLoop]: Abstraction has 46905 states and 60025 transitions. [2023-04-01 23:31:34,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.833333333333336) internal successors, (466), 10 states have internal predecessors, (466), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 23:31:34,408 INFO L276 IsEmpty]: Start isEmpty. Operand 46905 states and 60025 transitions. [2023-04-01 23:31:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-04-01 23:31:34,426 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:31:34,426 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:31:34,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:31:34,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:34,632 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:31:34,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:31:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash -354388872, now seen corresponding path program 1 times [2023-04-01 23:31:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:31:34,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746310031] [2023-04-01 23:31:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:31:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:34,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:31:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:34,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:31:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:31:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:31:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 189 proven. 3 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-04-01 23:31:35,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:31:35,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746310031] [2023-04-01 23:31:35,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746310031] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:31:35,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254011266] [2023-04-01 23:31:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:35,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:35,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:31:35,188 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) [2023-04-01 23:31:35,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:31:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:35,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:31:35,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:31:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-04-01 23:31:35,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:31:35,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254011266] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:31:35,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:31:35,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:31:35,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515881556] [2023-04-01 23:31:35,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:31:35,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:31:35,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:31:35,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:31:35,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:31:35,453 INFO L87 Difference]: Start difference. First operand 46905 states and 60025 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:31:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:31:37,535 INFO L93 Difference]: Finished difference Result 104253 states and 134784 transitions. [2023-04-01 23:31:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:31:37,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 543 [2023-04-01 23:31:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:31:37,657 INFO L225 Difference]: With dead ends: 104253 [2023-04-01 23:31:37,657 INFO L226 Difference]: Without dead ends: 56438 [2023-04-01 23:31:37,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:31:37,702 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 418 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:31:37,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 782 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:31:37,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56438 states. [2023-04-01 23:31:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56438 to 55123. [2023-04-01 23:31:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55123 states, 54117 states have (on average 1.116802483507955) internal successors, (60438), 54461 states have internal predecessors, (60438), 250 states have call successors, (250), 250 states have call predecessors, (250), 755 states have return successors, (8642), 411 states have call predecessors, (8642), 249 states have call successors, (8642) [2023-04-01 23:31:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55123 states to 55123 states and 69330 transitions. [2023-04-01 23:31:38,703 INFO L78 Accepts]: Start accepts. Automaton has 55123 states and 69330 transitions. Word has length 543 [2023-04-01 23:31:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:31:38,705 INFO L495 AbstractCegarLoop]: Abstraction has 55123 states and 69330 transitions. [2023-04-01 23:31:38,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:31:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 55123 states and 69330 transitions. [2023-04-01 23:31:38,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-04-01 23:31:38,734 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:31:38,734 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:31:38,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:31:38,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:38,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:31:38,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:31:38,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1067952311, now seen corresponding path program 1 times [2023-04-01 23:31:38,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:31:38,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971216744] [2023-04-01 23:31:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:38,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:31:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:31:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:31:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:31:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:39,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-01 23:31:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:39,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-04-01 23:31:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 253 proven. 4 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-04-01 23:31:39,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:31:39,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971216744] [2023-04-01 23:31:39,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971216744] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:31:39,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200154057] [2023-04-01 23:31:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:39,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:39,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:31:39,743 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) [2023-04-01 23:31:39,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:31:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:40,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:31:40,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:31:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-04-01 23:31:40,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:31:40,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200154057] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:31:40,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:31:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:31:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938503028] [2023-04-01 23:31:40,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:31:40,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:31:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:31:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:31:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:31:40,122 INFO L87 Difference]: Start difference. First operand 55123 states and 69330 transitions. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:31:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:31:42,104 INFO L93 Difference]: Finished difference Result 123639 states and 155685 transitions. [2023-04-01 23:31:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:31:42,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 632 [2023-04-01 23:31:42,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:31:42,258 INFO L225 Difference]: With dead ends: 123639 [2023-04-01 23:31:42,258 INFO L226 Difference]: Without dead ends: 68521 [2023-04-01 23:31:42,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 641 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:31:42,293 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 396 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:31:42,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 375 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:31:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68521 states. [2023-04-01 23:31:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68521 to 65042. [2023-04-01 23:31:43,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65042 states, 63952 states have (on average 1.0976670002501876) internal successors, (70198), 64294 states have internal predecessors, (70198), 296 states have call successors, (296), 296 states have call predecessors, (296), 793 states have return successors, (8758), 451 states have call predecessors, (8758), 295 states have call successors, (8758) [2023-04-01 23:31:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65042 states to 65042 states and 79252 transitions. [2023-04-01 23:31:43,531 INFO L78 Accepts]: Start accepts. Automaton has 65042 states and 79252 transitions. Word has length 632 [2023-04-01 23:31:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:31:43,532 INFO L495 AbstractCegarLoop]: Abstraction has 65042 states and 79252 transitions. [2023-04-01 23:31:43,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:31:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 65042 states and 79252 transitions. [2023-04-01 23:31:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-04-01 23:31:43,783 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:31:43,783 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:31:43,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:31:43,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:43,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:31:43,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:31:43,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1319883385, now seen corresponding path program 1 times [2023-04-01 23:31:43,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:31:43,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876066173] [2023-04-01 23:31:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:43,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:31:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:31:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:44,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:31:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:44,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:31:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-01 23:31:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:44,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-04-01 23:31:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2023-04-01 23:31:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2023-04-01 23:31:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1839 backedges. 405 proven. 4 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2023-04-01 23:31:44,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:31:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876066173] [2023-04-01 23:31:44,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876066173] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:31:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323785537] [2023-04-01 23:31:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:44,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:44,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:31:44,429 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) [2023-04-01 23:31:44,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:31:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:44,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 23:31:44,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:31:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1839 backedges. 1066 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2023-04-01 23:31:44,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:31:44,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323785537] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:31:44,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:31:44,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:31:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500111396] [2023-04-01 23:31:44,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:31:44,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:31:44,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:31:44,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:31:44,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:31:44,695 INFO L87 Difference]: Start difference. First operand 65042 states and 79252 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 23:31:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:31:46,982 INFO L93 Difference]: Finished difference Result 140940 states and 172321 transitions. [2023-04-01 23:31:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:31:46,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 778 [2023-04-01 23:31:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:31:47,248 INFO L225 Difference]: With dead ends: 140940 [2023-04-01 23:31:47,248 INFO L226 Difference]: Without dead ends: 75904 [2023-04-01 23:31:47,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:31:47,297 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 489 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:31:47,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 323 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-01 23:31:47,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75904 states. [2023-04-01 23:31:48,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75904 to 75880. [2023-04-01 23:31:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75880 states, 74679 states have (on average 1.0886728531447931) internal successors, (81301), 75026 states have internal predecessors, (81301), 346 states have call successors, (346), 346 states have call predecessors, (346), 854 states have return successors, (9495), 507 states have call predecessors, (9495), 345 states have call successors, (9495) [2023-04-01 23:31:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75880 states to 75880 states and 91142 transitions. [2023-04-01 23:31:48,452 INFO L78 Accepts]: Start accepts. Automaton has 75880 states and 91142 transitions. Word has length 778 [2023-04-01 23:31:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:31:48,453 INFO L495 AbstractCegarLoop]: Abstraction has 75880 states and 91142 transitions. [2023-04-01 23:31:48,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 23:31:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 75880 states and 91142 transitions. [2023-04-01 23:31:48,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-04-01 23:31:48,653 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:31:48,653 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:31:48,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 23:31:48,854 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,SelfDestructingSolverStorable10 [2023-04-01 23:31:48,854 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:31:48,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:31:48,855 INFO L85 PathProgramCache]: Analyzing trace with hash -264788093, now seen corresponding path program 1 times [2023-04-01 23:31:48,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:31:48,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176785379] [2023-04-01 23:31:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:48,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:31:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:31:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:31:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:49,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:31:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:49,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-04-01 23:31:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:49,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-04-01 23:31:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:31:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 486 proven. 64 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-04-01 23:31:50,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:31:50,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176785379] [2023-04-01 23:31:50,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176785379] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:31:50,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359226440] [2023-04-01 23:31:50,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:50,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:50,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:31:50,337 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) [2023-04-01 23:31:50,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:31:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:50,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 23:31:50,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:31:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 488 proven. 65 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-04-01 23:31:51,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:31:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 488 proven. 65 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-04-01 23:31:52,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359226440] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:31:52,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:31:52,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 16 [2023-04-01 23:31:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842707722] [2023-04-01 23:31:52,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:31:52,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 23:31:52,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:31:52,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 23:31:52,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:31:52,861 INFO L87 Difference]: Start difference. First operand 75880 states and 91142 transitions. Second operand has 16 states, 16 states have (on average 96.5) internal successors, (1544), 14 states have internal predecessors, (1544), 10 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (11), 10 states have call predecessors, (11), 7 states have call successors, (11) [2023-04-01 23:32:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:32:09,104 INFO L93 Difference]: Finished difference Result 216013 states and 262868 transitions. [2023-04-01 23:32:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-04-01 23:32:09,105 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 96.5) internal successors, (1544), 14 states have internal predecessors, (1544), 10 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (11), 10 states have call predecessors, (11), 7 states have call successors, (11) Word has length 778 [2023-04-01 23:32:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:32:09,437 INFO L225 Difference]: With dead ends: 216013 [2023-04-01 23:32:09,437 INFO L226 Difference]: Without dead ends: 138389 [2023-04-01 23:32:09,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1728 GetRequests, 1635 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3129 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1524, Invalid=7218, Unknown=0, NotChecked=0, Total=8742 [2023-04-01 23:32:09,525 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 10929 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 12939 mSolverCounterSat, 2190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10929 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 15129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2190 IncrementalHoareTripleChecker+Valid, 12939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:32:09,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10929 Valid, 827 Invalid, 15129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2190 Valid, 12939 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-04-01 23:32:09,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138389 states. [2023-04-01 23:32:11,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138389 to 118431. [2023-04-01 23:32:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118431 states, 116637 states have (on average 1.0763565592393494) internal successors, (125543), 117127 states have internal predecessors, (125543), 540 states have call successors, (540), 540 states have call predecessors, (540), 1253 states have return successors, (13303), 763 states have call predecessors, (13303), 539 states have call successors, (13303) [2023-04-01 23:32:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118431 states to 118431 states and 139386 transitions. [2023-04-01 23:32:12,133 INFO L78 Accepts]: Start accepts. Automaton has 118431 states and 139386 transitions. Word has length 778 [2023-04-01 23:32:12,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:32:12,133 INFO L495 AbstractCegarLoop]: Abstraction has 118431 states and 139386 transitions. [2023-04-01 23:32:12,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 96.5) internal successors, (1544), 14 states have internal predecessors, (1544), 10 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (11), 10 states have call predecessors, (11), 7 states have call successors, (11) [2023-04-01 23:32:12,134 INFO L276 IsEmpty]: Start isEmpty. Operand 118431 states and 139386 transitions. [2023-04-01 23:32:12,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2023-04-01 23:32:12,259 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:32:12,260 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:32:12,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:32:12,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:32:12,465 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:32:12,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:32:12,466 INFO L85 PathProgramCache]: Analyzing trace with hash 121974282, now seen corresponding path program 1 times [2023-04-01 23:32:12,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:32:12,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346652174] [2023-04-01 23:32:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:32:12,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:32:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:32:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:12,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:32:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:32:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:12,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-04-01 23:32:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 23:32:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:13,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:32:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2023-04-01 23:32:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-04-01 23:32:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 405 proven. 4 refuted. 0 times theorem prover too weak. 1593 trivial. 0 not checked. [2023-04-01 23:32:13,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:32:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346652174] [2023-04-01 23:32:13,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346652174] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:32:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387982084] [2023-04-01 23:32:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:32:13,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:32:13,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:32:13,269 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) [2023-04-01 23:32:13,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:32:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:13,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 23:32:13,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:32:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 1407 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2023-04-01 23:32:14,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:32:14,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387982084] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:32:14,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:32:14,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-04-01 23:32:14,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261464487] [2023-04-01 23:32:14,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:32:14,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:32:14,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:32:14,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:32:14,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:32:14,149 INFO L87 Difference]: Start difference. First operand 118431 states and 139386 transitions. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 23:32:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:32:16,008 INFO L93 Difference]: Finished difference Result 221348 states and 259003 transitions. [2023-04-01 23:32:16,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:32:16,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 998 [2023-04-01 23:32:16,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:32:16,240 INFO L225 Difference]: With dead ends: 221348 [2023-04-01 23:32:16,241 INFO L226 Difference]: Without dead ends: 102920 [2023-04-01 23:32:16,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 1014 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:32:16,404 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 361 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:32:16,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 79 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 23:32:16,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102920 states. [2023-04-01 23:32:17,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102920 to 102908. [2023-04-01 23:32:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102908 states, 101373 states have (on average 1.0697325717893325) internal successors, (108442), 101786 states have internal predecessors, (108442), 470 states have call successors, (470), 470 states have call predecessors, (470), 1064 states have return successors, (10340), 651 states have call predecessors, (10340), 469 states have call successors, (10340) [2023-04-01 23:32:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102908 states to 102908 states and 119252 transitions. [2023-04-01 23:32:17,962 INFO L78 Accepts]: Start accepts. Automaton has 102908 states and 119252 transitions. Word has length 998 [2023-04-01 23:32:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:32:17,963 INFO L495 AbstractCegarLoop]: Abstraction has 102908 states and 119252 transitions. [2023-04-01 23:32:17,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 23:32:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand 102908 states and 119252 transitions. [2023-04-01 23:32:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2023-04-01 23:32:18,052 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:32:18,052 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:32:18,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:32:18,258 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,SelfDestructingSolverStorable12 [2023-04-01 23:32:18,258 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:32:18,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:32:18,258 INFO L85 PathProgramCache]: Analyzing trace with hash -335761334, now seen corresponding path program 1 times [2023-04-01 23:32:18,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:32:18,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372260930] [2023-04-01 23:32:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:32:18,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:32:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:19,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:32:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:32:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:32:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:32:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2023-04-01 23:32:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:32:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-04-01 23:32:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:19,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 867 [2023-04-01 23:32:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2023-04-01 23:32:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:32:19,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372260930] [2023-04-01 23:32:19,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372260930] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:32:19,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:32:19,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 23:32:19,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983445407] [2023-04-01 23:32:19,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:32:19,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:32:19,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:32:19,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:32:19,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:32:19,444 INFO L87 Difference]: Start difference. First operand 102908 states and 119252 transitions. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 3 states have internal predecessors, (398), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:32:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:32:23,383 INFO L93 Difference]: Finished difference Result 210116 states and 243780 transitions. [2023-04-01 23:32:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:32:23,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 3 states have internal predecessors, (398), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1048 [2023-04-01 23:32:23,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:32:23,642 INFO L225 Difference]: With dead ends: 210116 [2023-04-01 23:32:23,642 INFO L226 Difference]: Without dead ends: 104152 [2023-04-01 23:32:23,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:32:23,697 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 915 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:32:23,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 133 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 23:32:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104152 states. [2023-04-01 23:32:25,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104152 to 101113. [2023-04-01 23:32:25,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101113 states, 99619 states have (on average 1.064114275389233) internal successors, (106006), 100015 states have internal predecessors, (106006), 462 states have call successors, (462), 462 states have call predecessors, (462), 1031 states have return successors, (9526), 635 states have call predecessors, (9526), 461 states have call successors, (9526) [2023-04-01 23:32:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101113 states to 101113 states and 115994 transitions. [2023-04-01 23:32:25,400 INFO L78 Accepts]: Start accepts. Automaton has 101113 states and 115994 transitions. Word has length 1048 [2023-04-01 23:32:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:32:25,401 INFO L495 AbstractCegarLoop]: Abstraction has 101113 states and 115994 transitions. [2023-04-01 23:32:25,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 3 states have internal predecessors, (398), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:32:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 101113 states and 115994 transitions. [2023-04-01 23:32:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1319 [2023-04-01 23:32:25,722 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:32:25,723 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:32:25,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 23:32:25,723 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:32:25,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:32:25,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1173470912, now seen corresponding path program 1 times [2023-04-01 23:32:25,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:32:25,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405612456] [2023-04-01 23:32:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:32:25,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:32:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:27,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:32:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:32:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:32:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-04-01 23:32:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 23:32:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:27,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2023-04-01 23:32:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:32:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:27,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 847 [2023-04-01 23:32:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:32:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 1019 proven. 619 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2023-04-01 23:32:28,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:32:28,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405612456] [2023-04-01 23:32:28,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405612456] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:32:28,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828734894] [2023-04-01 23:32:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:32:28,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:32:28,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:32:28,095 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) [2023-04-01 23:32:28,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:32:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:32:28,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-01 23:32:28,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:32:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 1204 proven. 122 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2023-04-01 23:32:29,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:32:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 1322 proven. 4 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2023-04-01 23:32:31,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828734894] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:32:31,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:32:31,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 20 [2023-04-01 23:32:31,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154448811] [2023-04-01 23:32:31,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:32:31,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-01 23:32:31,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:32:31,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-01 23:32:31,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:32:31,624 INFO L87 Difference]: Start difference. First operand 101113 states and 115994 transitions. Second operand has 20 states, 20 states have (on average 90.3) internal successors, (1806), 18 states have internal predecessors, (1806), 12 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (19), 14 states have call predecessors, (19), 10 states have call successors, (19) [2023-04-01 23:32:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:32:54,459 INFO L93 Difference]: Finished difference Result 321927 states and 372979 transitions. [2023-04-01 23:32:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-04-01 23:32:54,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 90.3) internal successors, (1806), 18 states have internal predecessors, (1806), 12 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (19), 14 states have call predecessors, (19), 10 states have call successors, (19) Word has length 1318 [2023-04-01 23:32:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:32:55,246 INFO L225 Difference]: With dead ends: 321927 [2023-04-01 23:32:55,246 INFO L226 Difference]: Without dead ends: 219506 [2023-04-01 23:32:55,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2947 GetRequests, 2780 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11580 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3750, Invalid=24306, Unknown=0, NotChecked=0, Total=28056 [2023-04-01 23:32:55,325 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 11136 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 22737 mSolverCounterSat, 3408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11136 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 26145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3408 IncrementalHoareTripleChecker+Valid, 22737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:32:55,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11136 Valid, 993 Invalid, 26145 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3408 Valid, 22737 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2023-04-01 23:32:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219506 states. [2023-04-01 23:32:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219506 to 209008. [2023-04-01 23:32:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209008 states, 206040 states have (on average 1.0592118035332945) internal successors, (218240), 206780 states have internal predecessors, (218240), 954 states have call successors, (954), 954 states have call predecessors, (954), 2013 states have return successors, (18485), 1273 states have call predecessors, (18485), 953 states have call successors, (18485) [2023-04-01 23:32:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209008 states to 209008 states and 237679 transitions. [2023-04-01 23:32:59,027 INFO L78 Accepts]: Start accepts. Automaton has 209008 states and 237679 transitions. Word has length 1318 [2023-04-01 23:32:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:32:59,028 INFO L495 AbstractCegarLoop]: Abstraction has 209008 states and 237679 transitions. [2023-04-01 23:32:59,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 90.3) internal successors, (1806), 18 states have internal predecessors, (1806), 12 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (19), 14 states have call predecessors, (19), 10 states have call successors, (19) [2023-04-01 23:32:59,028 INFO L276 IsEmpty]: Start isEmpty. Operand 209008 states and 237679 transitions. [2023-04-01 23:32:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1504 [2023-04-01 23:32:59,493 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:32:59,494 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:32:59,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:32:59,700 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,SelfDestructingSolverStorable14 [2023-04-01 23:32:59,702 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:32:59,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:32:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash -57402096, now seen corresponding path program 1 times [2023-04-01 23:32:59,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:32:59,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011336005] [2023-04-01 23:32:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:32:59,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:32:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:33:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:33:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:33:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:02,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-01 23:33:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2023-04-01 23:33:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:02,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2023-04-01 23:33:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2023-04-01 23:33:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:33:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:03,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1032 [2023-04-01 23:33:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:33:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 1811 proven. 899 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2023-04-01 23:33:03,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:33:03,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011336005] [2023-04-01 23:33:03,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011336005] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:33:03,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008346573] [2023-04-01 23:33:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:33:03,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:33:03,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:33:03,862 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) [2023-04-01 23:33:03,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:33:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:33:04,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 23:33:04,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:33:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 1746 proven. 183 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2023-04-01 23:33:05,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:33:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 1923 proven. 6 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2023-04-01 23:33:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008346573] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:33:08,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:33:08,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7, 7] total 26 [2023-04-01 23:33:08,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890566585] [2023-04-01 23:33:08,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:33:08,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-01 23:33:08,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:33:08,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-01 23:33:08,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:33:08,108 INFO L87 Difference]: Start difference. First operand 209008 states and 237679 transitions. Second operand has 26 states, 26 states have (on average 82.73076923076923) internal successors, (2151), 24 states have internal predecessors, (2151), 14 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2023-04-01 23:33:45,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:33:45,544 INFO L93 Difference]: Finished difference Result 578551 states and 651830 transitions. [2023-04-01 23:33:45,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-04-01 23:33:45,545 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 82.73076923076923) internal successors, (2151), 24 states have internal predecessors, (2151), 14 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) Word has length 1503 [2023-04-01 23:33:45,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:33:45,550 INFO L225 Difference]: With dead ends: 578551 [2023-04-01 23:33:45,550 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 23:33:45,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3389 GetRequests, 3179 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18297 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5581, Invalid=38729, Unknown=0, NotChecked=0, Total=44310 [2023-04-01 23:33:45,924 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 25919 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 32264 mSolverCounterSat, 3231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25919 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 35495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3231 IncrementalHoareTripleChecker+Valid, 32264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:33:45,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25919 Valid, 1347 Invalid, 35495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3231 Valid, 32264 Invalid, 0 Unknown, 0 Unchecked, 28.4s Time] [2023-04-01 23:33:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 23:33:45,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 23:33:45,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 23:33:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 23:33:45,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1503 [2023-04-01 23:33:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:33:45,935 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 23:33:45,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 82.73076923076923) internal successors, (2151), 24 states have internal predecessors, (2151), 14 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2023-04-01 23:33:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 23:33:45,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 23:33:45,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 23:33:45,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-04-01 23:33:46,154 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,SelfDestructingSolverStorable15 [2023-04-01 23:33:46,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.