/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/eca-rers2012/Problem06_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 03:36:13,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 03:36:13,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 03:36:13,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 03:36:13,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 03:36:13,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 03:36:13,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 03:36:13,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 03:36:13,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 03:36:13,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 03:36:13,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 03:36:13,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 03:36:13,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 03:36:13,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 03:36:13,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 03:36:13,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 03:36:13,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 03:36:13,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 03:36:13,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 03:36:13,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 03:36:13,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 03:36:13,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 03:36:13,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 03:36:13,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 03:36:13,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 03:36:13,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 03:36:13,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 03:36:13,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 03:36:13,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 03:36:13,195 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 03:36:13,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 03:36:13,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 03:36:13,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 03:36:13,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 03:36:13,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 03:36:13,196 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 03:36:13,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 03:36:13,197 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 03:36:13,197 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 03:36:13,197 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 03:36:13,197 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 03:36:13,198 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 03:36:13,198 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 03:36:13,198 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 03:36:13,198 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 03:36:13,198 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 03:36:13,198 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 03:36:13,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 03:36:13,199 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 03:36:13,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 03:36:13,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 03:36:13,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 03:36:13,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 03:36:13,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 03:36:13,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 03:36:13,200 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 03:36:13,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 03:36:13,200 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 03:36:13,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 03:36:13,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 03:36:13,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 03:36:13,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 03:36:13,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 03:36:13,200 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 03:36:13,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 03:36:13,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 03:36:13,201 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 03:36:13,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 03:36:13,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 03:36:13,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 03:36:13,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 03:36:13,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 03:36:13,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 03:36:13,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 03:36:13,414 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 03:36:13,414 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 03:36:13,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem06_label48.c [2023-04-01 03:36:14,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 03:36:14,969 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 03:36:14,970 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem06_label48.c [2023-04-01 03:36:15,019 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e434f1e/74a48e0fdcbb4f97b4241a5d817f3790/FLAGa57482308 [2023-04-01 03:36:15,032 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e434f1e/74a48e0fdcbb4f97b4241a5d817f3790 [2023-04-01 03:36:15,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 03:36:15,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 03:36:15,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 03:36:15,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 03:36:15,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 03:36:15,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:36:15" (1/1) ... [2023-04-01 03:36:15,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7add6a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:15, skipping insertion in model container [2023-04-01 03:36:15,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:36:15" (1/1) ... [2023-04-01 03:36:15,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 03:36:15,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 03:36:16,369 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/Problem06_label48.c[331430,331443] [2023-04-01 03:36:16,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 03:36:16,398 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 03:36:16,950 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/Problem06_label48.c[331430,331443] [2023-04-01 03:36:16,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 03:36:17,025 INFO L208 MainTranslator]: Completed translation [2023-04-01 03:36:17,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17 WrapperNode [2023-04-01 03:36:17,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 03:36:17,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 03:36:17,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 03:36:17,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 03:36:17,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17" (1/1) ... [2023-04-01 03:36:17,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17" (1/1) ... [2023-04-01 03:36:17,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17" (1/1) ... [2023-04-01 03:36:17,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17" (1/1) ... [2023-04-01 03:36:17,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17" (1/1) ... [2023-04-01 03:36:17,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17" (1/1) ... [2023-04-01 03:36:17,342 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17" (1/1) ... [2023-04-01 03:36:17,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17" (1/1) ... [2023-04-01 03:36:17,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 03:36:17,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 03:36:17,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 03:36:17,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 03:36:17,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17" (1/1) ... [2023-04-01 03:36:17,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 03:36:17,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:36:17,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 03:36:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 03:36:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 03:36:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 03:36:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 03:36:17,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 03:36:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 03:36:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 03:36:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 03:36:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 03:36:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 03:36:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 03:36:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 03:36:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 03:36:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 03:36:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 03:36:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 03:36:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 03:36:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 03:36:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 03:36:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 03:36:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 03:36:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 03:36:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 03:36:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 03:36:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 03:36:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 03:36:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 03:36:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 03:36:17,592 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 03:36:17,594 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 03:36:21,698 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 03:36:22,450 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 03:36:22,451 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 03:36:22,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:36:22 BoogieIcfgContainer [2023-04-01 03:36:22,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 03:36:22,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 03:36:22,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 03:36:22,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 03:36:22,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 03:36:15" (1/3) ... [2023-04-01 03:36:22,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa65110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:36:22, skipping insertion in model container [2023-04-01 03:36:22,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:36:17" (2/3) ... [2023-04-01 03:36:22,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa65110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:36:22, skipping insertion in model container [2023-04-01 03:36:22,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:36:22" (3/3) ... [2023-04-01 03:36:22,460 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label48.c [2023-04-01 03:36:22,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 03:36:22,473 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 03:36:22,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 03:36:22,525 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=FINITE_AUTOMATA, 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;@30303b37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 03:36:22,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 03:36:22,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 964 states, 948 states have (on average 1.978902953586498) internal successors, (1876), 949 states have internal predecessors, (1876), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 03:36:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2023-04-01 03:36:22,564 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:36:22,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 03:36:22,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:36:22,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:36:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1715915754, now seen corresponding path program 1 times [2023-04-01 03:36:22,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:36:22,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170309944] [2023-04-01 03:36:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:36:22,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:36:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:36:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:36:26,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:36:26,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170309944] [2023-04-01 03:36:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170309944] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:36:26,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:36:26,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 03:36:26,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587428977] [2023-04-01 03:36:26,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:36:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 03:36:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:36:26,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 03:36:26,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 03:36:26,550 INFO L87 Difference]: Start difference. First operand has 964 states, 948 states have (on average 1.978902953586498) internal successors, (1876), 949 states have internal predecessors, (1876), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 2 states have internal predecessors, (935), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 03:36:29,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:36:29,852 INFO L93 Difference]: Finished difference Result 2880 states and 5678 transitions. [2023-04-01 03:36:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 03:36:29,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 2 states have internal predecessors, (935), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 943 [2023-04-01 03:36:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:36:29,900 INFO L225 Difference]: With dead ends: 2880 [2023-04-01 03:36:29,901 INFO L226 Difference]: Without dead ends: 1913 [2023-04-01 03:36:29,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 03:36:29,913 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 357 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2808 mSolverCounterSat, 981 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 3789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 981 IncrementalHoareTripleChecker+Valid, 2808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 03:36:29,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 403 Invalid, 3789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [981 Valid, 2808 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 03:36:29,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2023-04-01 03:36:30,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1913. [2023-04-01 03:36:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1889 states have (on average 1.7739544732662784) internal successors, (3351), 1889 states have internal predecessors, (3351), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2023-04-01 03:36:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 3384 transitions. [2023-04-01 03:36:30,024 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 3384 transitions. Word has length 943 [2023-04-01 03:36:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:36:30,027 INFO L495 AbstractCegarLoop]: Abstraction has 1913 states and 3384 transitions. [2023-04-01 03:36:30,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 2 states have internal predecessors, (935), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 03:36:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 3384 transitions. [2023-04-01 03:36:30,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2023-04-01 03:36:30,054 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:36:30,055 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 03:36:30,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 03:36:30,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:36:30,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:36:30,056 INFO L85 PathProgramCache]: Analyzing trace with hash 448232419, now seen corresponding path program 1 times [2023-04-01 03:36:30,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:36:30,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414223749] [2023-04-01 03:36:30,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:36:30,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:36:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:36:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:36:31,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:36:31,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414223749] [2023-04-01 03:36:31,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414223749] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:36:31,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:36:31,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 03:36:31,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167967884] [2023-04-01 03:36:31,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:36:31,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 03:36:31,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:36:31,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 03:36:31,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 03:36:31,745 INFO L87 Difference]: Start difference. First operand 1913 states and 3384 transitions. Second operand has 5 states, 5 states have (on average 189.0) internal successors, (945), 4 states have internal predecessors, (945), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 03:36:35,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:36:35,820 INFO L93 Difference]: Finished difference Result 5869 states and 10397 transitions. [2023-04-01 03:36:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 03:36:35,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 189.0) internal successors, (945), 4 states have internal predecessors, (945), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 955 [2023-04-01 03:36:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:36:35,841 INFO L225 Difference]: With dead ends: 5869 [2023-04-01 03:36:35,841 INFO L226 Difference]: Without dead ends: 3961 [2023-04-01 03:36:35,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 03:36:35,857 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 3903 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4924 mSolverCounterSat, 1788 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3903 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 6712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1788 IncrementalHoareTripleChecker+Valid, 4924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-01 03:36:35,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3903 Valid, 176 Invalid, 6712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1788 Valid, 4924 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-01 03:36:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3961 states. [2023-04-01 03:36:35,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3961 to 3881. [2023-04-01 03:36:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3881 states, 3814 states have (on average 1.587047718930257) internal successors, (6053), 3821 states have internal predecessors, (6053), 22 states have call successors, (22), 22 states have call predecessors, (22), 44 states have return successors, (122), 37 states have call predecessors, (122), 21 states have call successors, (122) [2023-04-01 03:36:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3881 states to 3881 states and 6197 transitions. [2023-04-01 03:36:35,983 INFO L78 Accepts]: Start accepts. Automaton has 3881 states and 6197 transitions. Word has length 955 [2023-04-01 03:36:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:36:35,984 INFO L495 AbstractCegarLoop]: Abstraction has 3881 states and 6197 transitions. [2023-04-01 03:36:35,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.0) internal successors, (945), 4 states have internal predecessors, (945), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 03:36:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3881 states and 6197 transitions. [2023-04-01 03:36:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2023-04-01 03:36:36,013 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:36:36,013 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 03:36:36,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 03:36:36,013 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:36:36,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:36:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1052289149, now seen corresponding path program 1 times [2023-04-01 03:36:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:36:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638841202] [2023-04-01 03:36:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:36:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:36:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:36:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:36:37,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:36:37,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638841202] [2023-04-01 03:36:37,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638841202] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:36:37,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:36:37,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 03:36:37,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238405422] [2023-04-01 03:36:37,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:36:37,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 03:36:37,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:36:37,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 03:36:37,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 03:36:37,642 INFO L87 Difference]: Start difference. First operand 3881 states and 6197 transitions. Second operand has 5 states, 5 states have (on average 189.4) internal successors, (947), 4 states have internal predecessors, (947), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 03:36:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:36:41,661 INFO L93 Difference]: Finished difference Result 11918 states and 19423 transitions. [2023-04-01 03:36:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 03:36:41,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 189.4) internal successors, (947), 4 states have internal predecessors, (947), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 957 [2023-04-01 03:36:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:36:41,764 INFO L225 Difference]: With dead ends: 11918 [2023-04-01 03:36:41,764 INFO L226 Difference]: Without dead ends: 8042 [2023-04-01 03:36:41,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 03:36:41,771 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 2966 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 6302 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 7398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 6302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-01 03:36:41,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2966 Valid, 208 Invalid, 7398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1096 Valid, 6302 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-01 03:36:41,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8042 states. [2023-04-01 03:36:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8042 to 7938. [2023-04-01 03:36:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7938 states, 7740 states have (on average 1.5636950904392766) internal successors, (12103), 7775 states have internal predecessors, (12103), 42 states have call successors, (42), 42 states have call predecessors, (42), 155 states have return successors, (599), 120 states have call predecessors, (599), 41 states have call successors, (599) [2023-04-01 03:36:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7938 states to 7938 states and 12744 transitions. [2023-04-01 03:36:41,964 INFO L78 Accepts]: Start accepts. Automaton has 7938 states and 12744 transitions. Word has length 957 [2023-04-01 03:36:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:36:41,964 INFO L495 AbstractCegarLoop]: Abstraction has 7938 states and 12744 transitions. [2023-04-01 03:36:41,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.4) internal successors, (947), 4 states have internal predecessors, (947), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 03:36:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 7938 states and 12744 transitions. [2023-04-01 03:36:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2023-04-01 03:36:41,996 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:36:41,996 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 03:36:41,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 03:36:41,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:36:41,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:36:41,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1216969828, now seen corresponding path program 1 times [2023-04-01 03:36:41,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:36:41,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702722476] [2023-04-01 03:36:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:36:41,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:36:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:36:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 03:36:43,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:36:43,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702722476] [2023-04-01 03:36:43,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702722476] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 03:36:43,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282491200] [2023-04-01 03:36:43,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:36:43,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:36:43,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:36:43,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 03:36:43,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 03:36:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:36:43,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 2327 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 03:36:43,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 03:36:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 03:36:44,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 03:36:44,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282491200] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:36:44,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 03:36:44,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 03:36:44,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680258187] [2023-04-01 03:36:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:36:44,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 03:36:44,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:36:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 03:36:44,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 03:36:44,041 INFO L87 Difference]: Start difference. First operand 7938 states and 12744 transitions. Second operand has 5 states, 5 states have (on average 188.6) internal successors, (943), 4 states have internal predecessors, (943), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 03:36:48,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:36:48,069 INFO L93 Difference]: Finished difference Result 24372 states and 41346 transitions. [2023-04-01 03:36:48,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 03:36:48,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 188.6) internal successors, (943), 4 states have internal predecessors, (943), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 963 [2023-04-01 03:36:48,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:36:48,140 INFO L225 Difference]: With dead ends: 24372 [2023-04-01 03:36:48,140 INFO L226 Difference]: Without dead ends: 16439 [2023-04-01 03:36:48,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 962 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-04-01 03:36:48,169 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 3477 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 5084 mSolverCounterSat, 2028 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3477 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 7112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2028 IncrementalHoareTripleChecker+Valid, 5084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-01 03:36:48,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3477 Valid, 173 Invalid, 7112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2028 Valid, 5084 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-01 03:36:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16439 states. [2023-04-01 03:36:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16439 to 16199. [2023-04-01 03:36:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16199 states, 15684 states have (on average 1.471308339709258) internal successors, (23076), 15793 states have internal predecessors, (23076), 82 states have call successors, (82), 82 states have call predecessors, (82), 432 states have return successors, (2567), 323 states have call predecessors, (2567), 81 states have call successors, (2567) [2023-04-01 03:36:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16199 states to 16199 states and 25725 transitions. [2023-04-01 03:36:48,526 INFO L78 Accepts]: Start accepts. Automaton has 16199 states and 25725 transitions. Word has length 963 [2023-04-01 03:36:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:36:48,526 INFO L495 AbstractCegarLoop]: Abstraction has 16199 states and 25725 transitions. [2023-04-01 03:36:48,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.6) internal successors, (943), 4 states have internal predecessors, (943), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 03:36:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 16199 states and 25725 transitions. [2023-04-01 03:36:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2023-04-01 03:36:48,563 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:36:48,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 03:36:48,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 03:36:48,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:36:48,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:36:48,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:36:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash 570607301, now seen corresponding path program 1 times [2023-04-01 03:36:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:36:48,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900350140] [2023-04-01 03:36:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:36:48,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:36:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:36:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 03:36:50,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:36:50,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900350140] [2023-04-01 03:36:50,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900350140] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 03:36:50,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814712947] [2023-04-01 03:36:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:36:50,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:36:50,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:36:50,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 03:36:50,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 03:36:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:36:50,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 03:36:50,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 03:36:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 03:36:50,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 03:36:50,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814712947] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:36:50,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 03:36:50,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 03:36:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737131440] [2023-04-01 03:36:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:36:50,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 03:36:50,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:36:50,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 03:36:50,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 03:36:50,752 INFO L87 Difference]: Start difference. First operand 16199 states and 25725 transitions. Second operand has 5 states, 5 states have (on average 191.0) internal successors, (955), 4 states have internal predecessors, (955), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 03:36:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:36:55,222 INFO L93 Difference]: Finished difference Result 48979 states and 84329 transitions. [2023-04-01 03:36:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 03:36:55,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 191.0) internal successors, (955), 4 states have internal predecessors, (955), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 975 [2023-04-01 03:36:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:36:55,324 INFO L225 Difference]: With dead ends: 48979 [2023-04-01 03:36:55,325 INFO L226 Difference]: Without dead ends: 32785 [2023-04-01 03:36:55,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 974 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-04-01 03:36:55,360 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 3332 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 5291 mSolverCounterSat, 1708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 6999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1708 IncrementalHoareTripleChecker+Valid, 5291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 03:36:55,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3332 Valid, 190 Invalid, 6999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1708 Valid, 5291 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 03:36:55,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32785 states. [2023-04-01 03:36:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32785 to 32313. [2023-04-01 03:36:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32313 states, 30969 states have (on average 1.3521909005779973) internal successors, (41876), 31296 states have internal predecessors, (41876), 157 states have call successors, (157), 157 states have call predecessors, (157), 1186 states have return successors, (8892), 859 states have call predecessors, (8892), 156 states have call successors, (8892) [2023-04-01 03:36:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32313 states to 32313 states and 50925 transitions. [2023-04-01 03:36:56,073 INFO L78 Accepts]: Start accepts. Automaton has 32313 states and 50925 transitions. Word has length 975 [2023-04-01 03:36:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:36:56,074 INFO L495 AbstractCegarLoop]: Abstraction has 32313 states and 50925 transitions. [2023-04-01 03:36:56,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 191.0) internal successors, (955), 4 states have internal predecessors, (955), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 03:36:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 32313 states and 50925 transitions. [2023-04-01 03:36:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2023-04-01 03:36:56,152 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:36:56,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 03:36:56,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 03:36:56,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:36:56,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:36:56,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:36:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1721088366, now seen corresponding path program 1 times [2023-04-01 03:36:56,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:36:56,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795881701] [2023-04-01 03:36:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:36:56,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:36:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:36:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 03:36:57,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:36:57,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795881701] [2023-04-01 03:36:57,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795881701] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 03:36:57,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144877112] [2023-04-01 03:36:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:36:57,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:36:57,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:36:57,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 03:36:57,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 03:36:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:36:57,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 2313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 03:36:57,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 03:36:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 03:36:58,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 03:36:58,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144877112] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:36:58,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 03:36:58,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 03:36:58,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505403651] [2023-04-01 03:36:58,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:36:58,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 03:36:58,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:36:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 03:36:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-01 03:36:58,057 INFO L87 Difference]: Start difference. First operand 32313 states and 50925 transitions. Second operand has 5 states, 5 states have (on average 190.8) internal successors, (954), 4 states have internal predecessors, (954), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 03:37:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:37:01,982 INFO L93 Difference]: Finished difference Result 94253 states and 160853 transitions. [2023-04-01 03:37:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 03:37:01,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 190.8) internal successors, (954), 4 states have internal predecessors, (954), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 976 [2023-04-01 03:37:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:37:02,212 INFO L225 Difference]: With dead ends: 94253 [2023-04-01 03:37:02,212 INFO L226 Difference]: Without dead ends: 61945 [2023-04-01 03:37:02,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 975 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 03:37:02,259 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 3438 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 5276 mSolverCounterSat, 1040 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 6316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1040 IncrementalHoareTripleChecker+Valid, 5276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 03:37:02,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3438 Valid, 167 Invalid, 6316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1040 Valid, 5276 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 03:37:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61945 states. [2023-04-01 03:37:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61945 to 61627. [2023-04-01 03:37:03,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61627 states, 59357 states have (on average 1.3266169112320367) internal successors, (78744), 59915 states have internal predecessors, (78744), 302 states have call successors, (302), 302 states have call predecessors, (302), 1967 states have return successors, (21497), 1409 states have call predecessors, (21497), 301 states have call successors, (21497) [2023-04-01 03:37:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61627 states to 61627 states and 100543 transitions. [2023-04-01 03:37:03,858 INFO L78 Accepts]: Start accepts. Automaton has 61627 states and 100543 transitions. Word has length 976 [2023-04-01 03:37:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:37:03,859 INFO L495 AbstractCegarLoop]: Abstraction has 61627 states and 100543 transitions. [2023-04-01 03:37:03,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 190.8) internal successors, (954), 4 states have internal predecessors, (954), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 03:37:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 61627 states and 100543 transitions. [2023-04-01 03:37:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2023-04-01 03:37:04,153 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:37:04,153 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 03:37:04,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 03:37:04,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:37:04,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:37:04,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:37:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1919431921, now seen corresponding path program 1 times [2023-04-01 03:37:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:37:04,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432061337] [2023-04-01 03:37:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:37:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:37:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:37:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 54 proven. 27 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-04-01 03:37:07,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:37:07,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432061337] [2023-04-01 03:37:07,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432061337] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 03:37:07,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701151606] [2023-04-01 03:37:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:37:07,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:37:07,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:37:07,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 03:37:07,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 03:37:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:37:07,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 03:37:07,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 03:37:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-01 03:37:08,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 03:37:08,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701151606] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:37:08,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 03:37:08,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 03:37:08,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094199748] [2023-04-01 03:37:08,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:37:08,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 03:37:08,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:37:08,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 03:37:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 03:37:08,081 INFO L87 Difference]: Start difference. First operand 61627 states and 100543 transitions. Second operand has 5 states, 5 states have (on average 190.0) internal successors, (950), 4 states have internal predecessors, (950), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)