/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_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:40:24,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:40:24,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:40:24,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-30 23:40:24,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-30 23:40:24,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-30 23:40:24,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-30 23:40:24,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-30 23:40:24,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-30 23:40:24,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-30 23:40:24,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-30 23:40:24,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-30 23:40:24,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:40:24,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:40:24,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:40:24,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:40:24,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:40:24,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:40:24,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:40:24,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:40:24,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:40:24,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:40:24,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:40:24,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:40:24,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-30 23:40:24,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-30 23:40:24,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-30 23:40:24,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-30 23:40:24,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-30 23:40:24,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-30 23:40:24,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-30 23:40:24,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-30 23:40:24,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-30 23:40:24,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-30 23:40:24,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-30 23:40:24,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-30 23:40:24,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-30 23:40:24,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-30 23:40:24,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:40:24,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:40:24,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:40:24,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:40:24,391 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:40:24,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:40:24,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:40:24,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:40:24,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:40:24,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:40:24,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:40:24,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:40:24,393 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:40:24,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:40:24,394 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:40:24,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:40:24,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:40:24,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:40:24,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:40:24,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:40:24,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:40:24,395 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:40:24,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:40:24,396 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:40:24,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:40:24,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:40:24,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:40:24,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:40:24,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:40:24,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:40:24,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:40:24,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:40:24,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:40:24,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:40:24,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:40:24,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:40:24,397 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:40:24,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:40:24,398 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:40:24,398 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:40:24,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:40:24,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:40:24,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:40:24,680 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:40:24,680 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:40:24,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label27.c [2023-03-30 23:40:25,866 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:40:26,232 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:40:26,233 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label27.c [2023-03-30 23:40:26,251 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/895b6f455/cf254b3a7be84c049bfa58b7e8c58515/FLAG44c198555 [2023-03-30 23:40:26,267 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/895b6f455/cf254b3a7be84c049bfa58b7e8c58515 [2023-03-30 23:40:26,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:40:26,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:40:26,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:40:26,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:40:26,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:40:26,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:40:26" (1/1) ... [2023-03-30 23:40:26,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c347ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:26, skipping insertion in model container [2023-03-30 23:40:26,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:40:26" (1/1) ... [2023-03-30 23:40:26,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:40:26,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:40:26,617 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_label27.c[6203,6216] [2023-03-30 23:40:27,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:40:27,188 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:40:27,217 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_label27.c[6203,6216] [2023-03-30 23:40:27,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:40:27,451 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:40:27,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27 WrapperNode [2023-03-30 23:40:27,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:40:27,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:40:27,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:40:27,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:40:27,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27" (1/1) ... [2023-03-30 23:40:27,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27" (1/1) ... [2023-03-30 23:40:27,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27" (1/1) ... [2023-03-30 23:40:27,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27" (1/1) ... [2023-03-30 23:40:27,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27" (1/1) ... [2023-03-30 23:40:27,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27" (1/1) ... [2023-03-30 23:40:27,644 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27" (1/1) ... [2023-03-30 23:40:27,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27" (1/1) ... [2023-03-30 23:40:27,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:40:27,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:40:27,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:40:27,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:40:27,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27" (1/1) ... [2023-03-30 23:40:27,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:40:27,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:40:27,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 23:40:27,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 23:40:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:40:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:40:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:40:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:40:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:40:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:40:27,818 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:40:27,820 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:40:30,811 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:40:30,828 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:40:30,828 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:40:30,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:40:30 BoogieIcfgContainer [2023-03-30 23:40:30,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:40:30,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:40:30,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:40:30,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:40:30,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:40:26" (1/3) ... [2023-03-30 23:40:30,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d93019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:40:30, skipping insertion in model container [2023-03-30 23:40:30,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:40:27" (2/3) ... [2023-03-30 23:40:30,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d93019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:40:30, skipping insertion in model container [2023-03-30 23:40:30,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:40:30" (3/3) ... [2023-03-30 23:40:30,840 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label27.c [2023-03-30 23:40:30,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:40:30,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:40:30,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:40:30,935 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;@2fa5e260, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:40:30,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:40:30,944 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) [2023-03-30 23:40:30,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-03-30 23:40:30,953 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:40:30,954 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] [2023-03-30 23:40:30,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:40:30,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:40:30,960 INFO L85 PathProgramCache]: Analyzing trace with hash -375671118, now seen corresponding path program 1 times [2023-03-30 23:40:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:40:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806038483] [2023-03-30 23:40:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:40:30,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:40:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:40:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:40:31,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:40:31,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806038483] [2023-03-30 23:40:31,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806038483] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:40:31,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:40:31,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:40:31,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109976067] [2023-03-30 23:40:31,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:40:31,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:40:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:40:31,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:40:31,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:40:31,507 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 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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) [2023-03-30 23:40:35,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:40:35,346 INFO L93 Difference]: Finished difference Result 1729 states and 3137 transitions. [2023-03-30 23:40:35,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:40:35,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 47 [2023-03-30 23:40:35,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:40:35,364 INFO L225 Difference]: With dead ends: 1729 [2023-03-30 23:40:35,365 INFO L226 Difference]: Without dead ends: 1047 [2023-03-30 23:40:35,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:40:35,377 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1607 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 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, 3.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:40:35,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 137 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-03-30 23:40:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2023-03-30 23:40:35,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1028. [2023-03-30 23:40:35,474 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) [2023-03-30 23:40:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1763 transitions. [2023-03-30 23:40:35,480 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1763 transitions. Word has length 47 [2023-03-30 23:40:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:40:35,481 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1763 transitions. [2023-03-30 23:40:35,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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) [2023-03-30 23:40:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1763 transitions. [2023-03-30 23:40:35,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-03-30 23:40:35,485 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:40:35,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:40:35,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:40:35,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:40:35,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:40:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1546422547, now seen corresponding path program 1 times [2023-03-30 23:40:35,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:40:35,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692854222] [2023-03-30 23:40:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:40:35,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:40:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:35,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:40:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:35,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:40:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:40:36,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:40:36,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692854222] [2023-03-30 23:40:36,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692854222] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:40:36,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:40:36,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:40:36,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259769312] [2023-03-30 23:40:36,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:40:36,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:40:36,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:40:36,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:40:36,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:40:36,045 INFO L87 Difference]: Start difference. First operand 1028 states and 1763 transitions. Second operand has 7 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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) [2023-03-30 23:40:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:40:40,108 INFO L93 Difference]: Finished difference Result 3035 states and 5276 transitions. [2023-03-30 23:40:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:40:40,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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 116 [2023-03-30 23:40:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:40:40,118 INFO L225 Difference]: With dead ends: 3035 [2023-03-30 23:40:40,118 INFO L226 Difference]: Without dead ends: 2013 [2023-03-30 23:40:40,125 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 [2023-03-30 23:40:40,128 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 3331 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 3032 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 3032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:40:40,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 322 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 3032 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-03-30 23:40:40,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2023-03-30 23:40:40,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1961. [2023-03-30 23:40:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1921 states have (on average 1.5039042165538783) internal successors, (2889), 1931 states have internal predecessors, (2889), 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) [2023-03-30 23:40:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2963 transitions. [2023-03-30 23:40:40,227 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2963 transitions. Word has length 116 [2023-03-30 23:40:40,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:40:40,229 INFO L495 AbstractCegarLoop]: Abstraction has 1961 states and 2963 transitions. [2023-03-30 23:40:40,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 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) [2023-03-30 23:40:40,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2963 transitions. [2023-03-30 23:40:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-03-30 23:40:40,238 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:40:40,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:40:40,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:40:40,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:40:40,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:40:40,239 INFO L85 PathProgramCache]: Analyzing trace with hash 741175383, now seen corresponding path program 1 times [2023-03-30 23:40:40,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:40:40,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390716171] [2023-03-30 23:40:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:40:40,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:40:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:40,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:40:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:40,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:40:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:40:40,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:40:40,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390716171] [2023-03-30 23:40:40,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390716171] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:40:40,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:40:40,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:40:40,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850154774] [2023-03-30 23:40:40,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:40:40,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:40:40,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:40:40,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:40:40,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:40:40,559 INFO L87 Difference]: Start difference. First operand 1961 states and 2963 transitions. Second operand has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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) [2023-03-30 23:40:44,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:40:44,233 INFO L93 Difference]: Finished difference Result 5847 states and 8975 transitions. [2023-03-30 23:40:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:40:44,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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 118 [2023-03-30 23:40:44,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:40:44,252 INFO L225 Difference]: With dead ends: 5847 [2023-03-30 23:40:44,252 INFO L226 Difference]: Without dead ends: 3892 [2023-03-30 23:40:44,257 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 [2023-03-30 23:40:44,258 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 2524 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 3756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:40:44,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2524 Valid, 331 Invalid, 3756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [773 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-03-30 23:40:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2023-03-30 23:40:44,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 2891. [2023-03-30 23:40:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 2818 states have (on average 1.3474095102909864) internal successors, (3797), 2845 states have internal predecessors, (3797), 14 states have call successors, (14), 14 states have call predecessors, (14), 58 states have return successors, (145), 31 states have call predecessors, (145), 13 states have call successors, (145) [2023-03-30 23:40:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 3956 transitions. [2023-03-30 23:40:44,352 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 3956 transitions. Word has length 118 [2023-03-30 23:40:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:40:44,353 INFO L495 AbstractCegarLoop]: Abstraction has 2891 states and 3956 transitions. [2023-03-30 23:40:44,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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) [2023-03-30 23:40:44,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 3956 transitions. [2023-03-30 23:40:44,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-03-30 23:40:44,359 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:40:44,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:40:44,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:40:44,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:40:44,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:40:44,361 INFO L85 PathProgramCache]: Analyzing trace with hash 170844805, now seen corresponding path program 1 times [2023-03-30 23:40:44,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:40:44,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975909911] [2023-03-30 23:40:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:40:44,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:40:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:40:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:40:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:40:44,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:40:44,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975909911] [2023-03-30 23:40:44,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975909911] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:40:44,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888284221] [2023-03-30 23:40:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:40:44,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:40:44,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:40:44,693 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:40:44,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:40:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:44,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2023-03-30 23:40:44,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:40:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:40:45,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:40:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:40:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888284221] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-30 23:40:45,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-30 23:40:45,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 10 [2023-03-30 23:40:45,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839661500] [2023-03-30 23:40:45,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:40:45,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:40:45,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:40:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:40:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:40:45,386 INFO L87 Difference]: Start difference. First operand 2891 states and 3956 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2023-03-30 23:40:47,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:40:47,759 INFO L93 Difference]: Finished difference Result 7567 states and 10588 transitions. [2023-03-30 23:40:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:40:47,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 121 [2023-03-30 23:40:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:40:47,783 INFO L225 Difference]: With dead ends: 7567 [2023-03-30 23:40:47,783 INFO L226 Difference]: Without dead ends: 3753 [2023-03-30 23:40:47,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:40:47,792 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 560 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:40:47,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 668 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-03-30 23:40:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2023-03-30 23:40:47,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3732. [2023-03-30 23:40:47,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 3647 states have (on average 1.253907321085824) internal successors, (4573), 3675 states have internal predecessors, (4573), 18 states have call successors, (18), 18 states have call predecessors, (18), 66 states have return successors, (237), 38 states have call predecessors, (237), 17 states have call successors, (237) [2023-03-30 23:40:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 4828 transitions. [2023-03-30 23:40:47,880 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 4828 transitions. Word has length 121 [2023-03-30 23:40:47,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:40:47,880 INFO L495 AbstractCegarLoop]: Abstraction has 3732 states and 4828 transitions. [2023-03-30 23:40:47,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2023-03-30 23:40:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 4828 transitions. [2023-03-30 23:40:47,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-03-30 23:40:47,883 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:40:47,883 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:40:47,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 23:40:48,089 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 [2023-03-30 23:40:48,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:40:48,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:40:48,094 INFO L85 PathProgramCache]: Analyzing trace with hash 20908954, now seen corresponding path program 1 times [2023-03-30 23:40:48,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:40:48,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067210351] [2023-03-30 23:40:48,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:40:48,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:40:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:48,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:40:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:48,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:40:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:48,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:40:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-03-30 23:40:48,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:40:48,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067210351] [2023-03-30 23:40:48,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067210351] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:40:48,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:40:48,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:40:48,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107519197] [2023-03-30 23:40:48,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:40:48,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-30 23:40:48,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:40:48,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-30 23:40:48,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:40:48,487 INFO L87 Difference]: Start difference. First operand 3732 states and 4828 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 23:40:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:40:52,371 INFO L93 Difference]: Finished difference Result 10112 states and 13658 transitions. [2023-03-30 23:40:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:40:52,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 216 [2023-03-30 23:40:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:40:52,398 INFO L225 Difference]: With dead ends: 10112 [2023-03-30 23:40:52,398 INFO L226 Difference]: Without dead ends: 6385 [2023-03-30 23:40:52,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:40:52,407 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1554 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 4242 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 4568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 4242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:40:52,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 250 Invalid, 4568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 4242 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-03-30 23:40:52,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2023-03-30 23:40:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 6381. [2023-03-30 23:40:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6251 states have (on average 1.1476563749800033) internal successors, (7174), 6290 states have internal predecessors, (7174), 30 states have call successors, (30), 30 states have call predecessors, (30), 99 states have return successors, (420), 60 states have call predecessors, (420), 29 states have call successors, (420) [2023-03-30 23:40:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 7624 transitions. [2023-03-30 23:40:52,559 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 7624 transitions. Word has length 216 [2023-03-30 23:40:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:40:52,560 INFO L495 AbstractCegarLoop]: Abstraction has 6381 states and 7624 transitions. [2023-03-30 23:40:52,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 23:40:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 7624 transitions. [2023-03-30 23:40:52,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-03-30 23:40:52,567 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:40:52,568 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:40:52,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-30 23:40:52,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:40:52,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:40:52,568 INFO L85 PathProgramCache]: Analyzing trace with hash -505884892, now seen corresponding path program 1 times [2023-03-30 23:40:52,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:40:52,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133243939] [2023-03-30 23:40:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:40:52,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:40:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:52,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:40:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:52,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:40:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:52,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:40:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:52,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-03-30 23:40:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 123 proven. 3 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-03-30 23:40:52,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:40:52,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133243939] [2023-03-30 23:40:52,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133243939] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:40:52,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132669039] [2023-03-30 23:40:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:40:52,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:40:52,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:40:52,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:40:52,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:40:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:53,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:40:53,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:40:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-03-30 23:40:53,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:40:53,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132669039] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:40:53,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:40:53,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-03-30 23:40:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053026995] [2023-03-30 23:40:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:40:53,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:40:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:40:53,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:40:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:40:53,210 INFO L87 Difference]: Start difference. First operand 6381 states and 7624 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) [2023-03-30 23:40:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:40:54,981 INFO L93 Difference]: Finished difference Result 18466 states and 22366 transitions. [2023-03-30 23:40:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:40:54,982 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 314 [2023-03-30 23:40:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:40:55,022 INFO L225 Difference]: With dead ends: 18466 [2023-03-30 23:40:55,022 INFO L226 Difference]: Without dead ends: 11211 [2023-03-30 23:40:55,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:40:55,039 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 406 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:40:55,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 821 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-30 23:40:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11211 states. [2023-03-30 23:40:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11211 to 11211. [2023-03-30 23:40:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11211 states, 11010 states have (on average 1.1008174386920981) internal successors, (12120), 11063 states have internal predecessors, (12120), 52 states have call successors, (52), 52 states have call predecessors, (52), 148 states have return successors, (752), 95 states have call predecessors, (752), 51 states have call successors, (752) [2023-03-30 23:40:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11211 states to 11211 states and 12924 transitions. [2023-03-30 23:40:55,344 INFO L78 Accepts]: Start accepts. Automaton has 11211 states and 12924 transitions. Word has length 314 [2023-03-30 23:40:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:40:55,345 INFO L495 AbstractCegarLoop]: Abstraction has 11211 states and 12924 transitions. [2023-03-30 23:40:55,346 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) [2023-03-30 23:40:55,346 INFO L276 IsEmpty]: Start isEmpty. Operand 11211 states and 12924 transitions. [2023-03-30 23:40:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2023-03-30 23:40:55,355 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:40:55,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:40:55,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:40:55,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-03-30 23:40:55,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:40:55,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:40:55,562 INFO L85 PathProgramCache]: Analyzing trace with hash 773600890, now seen corresponding path program 1 times [2023-03-30 23:40:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:40:55,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802791805] [2023-03-30 23:40:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:40:55,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:40:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:40:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:40:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:40:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:40:57,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:40:57,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802791805] [2023-03-30 23:40:57,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802791805] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:40:57,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751673311] [2023-03-30 23:40:57,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:40:57,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:40:57,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:40:57,227 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:40:57,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:40:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:40:57,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:40:57,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:40:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:40:57,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:40:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:40:58,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751673311] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-30 23:40:58,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-30 23:40:58,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 16 [2023-03-30 23:40:58,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294897276] [2023-03-30 23:40:58,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:40:58,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-30 23:40:58,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:40:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-30 23:40:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:40:58,976 INFO L87 Difference]: Start difference. First operand 11211 states and 12924 transitions. Second operand has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 5 states have internal predecessors, (386), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:41:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:41:01,798 INFO L93 Difference]: Finished difference Result 30409 states and 35910 transitions. [2023-03-30 23:41:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-30 23:41:01,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 5 states have internal predecessors, (386), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 394 [2023-03-30 23:41:01,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:41:01,851 INFO L225 Difference]: With dead ends: 30409 [2023-03-30 23:41:01,852 INFO L226 Difference]: Without dead ends: 18766 [2023-03-30 23:41:01,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 785 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:41:01,870 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1138 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 3449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:41:01,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 261 Invalid, 3449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2863 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-30 23:41:01,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18766 states. [2023-03-30 23:41:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18766 to 16591. [2023-03-30 23:41:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16591 states, 16275 states have (on average 1.1131182795698924) internal successors, (18116), 16374 states have internal predecessors, (18116), 76 states have call successors, (76), 76 states have call predecessors, (76), 239 states have return successors, (1434), 140 states have call predecessors, (1434), 75 states have call successors, (1434) [2023-03-30 23:41:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16591 states to 16591 states and 19626 transitions. [2023-03-30 23:41:02,211 INFO L78 Accepts]: Start accepts. Automaton has 16591 states and 19626 transitions. Word has length 394 [2023-03-30 23:41:02,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:41:02,211 INFO L495 AbstractCegarLoop]: Abstraction has 16591 states and 19626 transitions. [2023-03-30 23:41:02,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 5 states have internal predecessors, (386), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:41:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 16591 states and 19626 transitions. [2023-03-30 23:41:02,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-03-30 23:41:02,225 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:41:02,226 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:41:02,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:41:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:41:02,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:41:02,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:41:02,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1954163084, now seen corresponding path program 1 times [2023-03-30 23:41:02,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:41:02,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530688507] [2023-03-30 23:41:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:41:02,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:41:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:41:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:41:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:02,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:41:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-03-30 23:41:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-03-30 23:41:02,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:41:02,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530688507] [2023-03-30 23:41:02,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530688507] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:41:02,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854056559] [2023-03-30 23:41:02,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:41:02,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:41:02,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:41:02,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:41:02,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:41:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:03,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 23:41:03,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:41:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-03-30 23:41:03,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:41:03,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854056559] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:41:03,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:41:03,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-03-30 23:41:03,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996233857] [2023-03-30 23:41:03,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:41:03,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:41:03,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:41:03,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:41:03,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:41:03,168 INFO L87 Difference]: Start difference. First operand 16591 states and 19626 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2023-03-30 23:41:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:41:04,840 INFO L93 Difference]: Finished difference Result 38440 states and 46106 transitions. [2023-03-30 23:41:04,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:41:04,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 473 [2023-03-30 23:41:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:41:04,954 INFO L225 Difference]: With dead ends: 38440 [2023-03-30 23:41:04,955 INFO L226 Difference]: Without dead ends: 21855 [2023-03-30 23:41:04,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:41:04,977 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 493 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:41:04,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 727 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-30 23:41:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21855 states. [2023-03-30 23:41:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21855 to 21849. [2023-03-30 23:41:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21849 states, 21459 states have (on average 1.1090917563726175) internal successors, (23800), 21576 states have internal predecessors, (23800), 100 states have call successors, (100), 100 states have call predecessors, (100), 289 states have return successors, (2115), 172 states have call predecessors, (2115), 99 states have call successors, (2115) [2023-03-30 23:41:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21849 states to 21849 states and 26015 transitions. [2023-03-30 23:41:05,345 INFO L78 Accepts]: Start accepts. Automaton has 21849 states and 26015 transitions. Word has length 473 [2023-03-30 23:41:05,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:41:05,346 INFO L495 AbstractCegarLoop]: Abstraction has 21849 states and 26015 transitions. [2023-03-30 23:41:05,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2023-03-30 23:41:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 21849 states and 26015 transitions. [2023-03-30 23:41:05,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-03-30 23:41:05,375 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:41:05,375 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:41:05,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:41:05,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:41:05,582 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:41:05,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:41:05,583 INFO L85 PathProgramCache]: Analyzing trace with hash -903436196, now seen corresponding path program 1 times [2023-03-30 23:41:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:41:05,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893711111] [2023-03-30 23:41:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:41:05,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:41:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:41:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:41:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:05,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:41:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-03-30 23:41:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-03-30 23:41:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2023-03-30 23:41:06,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:41:06,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893711111] [2023-03-30 23:41:06,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893711111] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:41:06,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216144393] [2023-03-30 23:41:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:41:06,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:41:06,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:41:06,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:41:06,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:41:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:06,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 23:41:06,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:41:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-03-30 23:41:06,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:41:06,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216144393] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:41:06,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:41:06,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-03-30 23:41:06,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987652314] [2023-03-30 23:41:06,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:41:06,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:41:06,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:41:06,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:41:06,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:41:06,378 INFO L87 Difference]: Start difference. First operand 21849 states and 26015 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2023-03-30 23:41:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:41:08,104 INFO L93 Difference]: Finished difference Result 54181 states and 65340 transitions. [2023-03-30 23:41:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:41:08,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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 610 [2023-03-30 23:41:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:41:08,200 INFO L225 Difference]: With dead ends: 54181 [2023-03-30 23:41:08,200 INFO L226 Difference]: Without dead ends: 32338 [2023-03-30 23:41:08,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:41:08,233 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 500 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:41:08,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 280 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 23:41:08,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32338 states. [2023-03-30 23:41:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32338 to 32316. [2023-03-30 23:41:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32316 states, 31799 states have (on average 1.1032422403220228) internal successors, (35082), 31937 states have internal predecessors, (35082), 148 states have call successors, (148), 148 states have call predecessors, (148), 368 states have return successors, (3326), 230 states have call predecessors, (3326), 147 states have call successors, (3326) [2023-03-30 23:41:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32316 states to 32316 states and 38556 transitions. [2023-03-30 23:41:08,897 INFO L78 Accepts]: Start accepts. Automaton has 32316 states and 38556 transitions. Word has length 610 [2023-03-30 23:41:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:41:08,898 INFO L495 AbstractCegarLoop]: Abstraction has 32316 states and 38556 transitions. [2023-03-30 23:41:08,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2023-03-30 23:41:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 32316 states and 38556 transitions. [2023-03-30 23:41:09,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-03-30 23:41:09,049 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:41:09,049 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, 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, 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] [2023-03-30 23:41:09,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:41:09,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:41:09,250 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:41:09,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:41:09,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1625839108, now seen corresponding path program 1 times [2023-03-30 23:41:09,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:41:09,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109235828] [2023-03-30 23:41:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:41:09,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:41:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:41:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:41:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:09,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:41:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-03-30 23:41:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:41:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:10,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2023-03-30 23:41:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 165 proven. 4 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2023-03-30 23:41:10,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:41:10,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109235828] [2023-03-30 23:41:10,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109235828] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:41:10,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5869861] [2023-03-30 23:41:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:41:10,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:41:10,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:41:10,051 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:41:10,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:41:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:41:10,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:41:10,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:41:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2023-03-30 23:41:10,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:41:10,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5869861] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:41:10,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:41:10,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-03-30 23:41:10,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466759605] [2023-03-30 23:41:10,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:41:10,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:41:10,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:41:10,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:41:10,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:41:10,352 INFO L87 Difference]: Start difference. First operand 32316 states and 38556 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-03-30 23:41:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:41:12,141 INFO L93 Difference]: Finished difference Result 74650 states and 89820 transitions. [2023-03-30 23:41:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:41:12,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 2 states have call successors, (5), 2 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 652 [2023-03-30 23:41:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:41:12,241 INFO L225 Difference]: With dead ends: 74650 [2023-03-30 23:41:12,241 INFO L226 Difference]: Without dead ends: 42772 [2023-03-30 23:41:12,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 663 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:41:12,279 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 409 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:41:12,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 378 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 23:41:12,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42772 states. [2023-03-30 23:41:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42772 to 38007. [2023-03-30 23:41:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38007 states, 37406 states have (on average 1.0859487782708657) internal successors, (40621), 37566 states have internal predecessors, (40621), 174 states have call successors, (174), 174 states have call predecessors, (174), 426 states have return successors, (3655), 266 states have call predecessors, (3655), 173 states have call successors, (3655) [2023-03-30 23:41:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38007 states to 38007 states and 44450 transitions. [2023-03-30 23:41:13,093 INFO L78 Accepts]: Start accepts. Automaton has 38007 states and 44450 transitions. Word has length 652 [2023-03-30 23:41:13,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:41:13,094 INFO L495 AbstractCegarLoop]: Abstraction has 38007 states and 44450 transitions. [2023-03-30 23:41:13,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-03-30 23:41:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 38007 states and 44450 transitions. [2023-03-30 23:41:13,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2023-03-30 23:41:13,155 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:41:13,155 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:41:13,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 23:41:13,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:41:13,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:41:13,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:41:13,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1793365247, now seen corresponding path program 1 times [2023-03-30 23:41:13,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:41:13,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561702527] [2023-03-30 23:41:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:41:13,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:41:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat