/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem18_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:43:48,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:43:48,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:43:48,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 23:43:48,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 23:43:48,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 23:43:48,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 23:43:48,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 23:43:48,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 23:43:48,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 23:43:48,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 23:43:48,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 23:43:48,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:43:48,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:43:48,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:43:48,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:43:48,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:43:48,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:43:48,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:43:48,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:43:48,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:43:48,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:43:48,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:43:48,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:43:48,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 23:43:48,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 23:43:48,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 23:43:48,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 23:43:48,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 23:43:48,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 23:43:48,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 23:43:48,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 23:43:48,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 23:43:48,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 23:43:48,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 23:43:48,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 23:43:48,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 23:43:48,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 23:43:48,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:43:48,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:43:48,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:43:48,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:43:48,199 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:43:48,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:43:48,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:43:48,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:43:48,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:43:48,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:43:48,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:43:48,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:43:48,202 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:43:48,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:43:48,202 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:43:48,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:43:48,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:43:48,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:43:48,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:43:48,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:43:48,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:43:48,203 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:43:48,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:43:48,203 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:43:48,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:43:48,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:43:48,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:43:48,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:43:48,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:43:48,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:43:48,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:43:48,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:43:48,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:43:48,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:43:48,204 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:43:48,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:43:48,204 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:43:48,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:43:48,205 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:43:48,205 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:43:48,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:43:48,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:43:48,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:43:48,390 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:43:48,391 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:43:48,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label34.c [2023-04-01 23:43:49,407 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:43:49,740 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:43:49,741 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label34.c [2023-04-01 23:43:49,758 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f242c54de/c61f7d3dd47c4c50993f83b74a5a721f/FLAG2d0224b20 [2023-04-01 23:43:49,771 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f242c54de/c61f7d3dd47c4c50993f83b74a5a721f [2023-04-01 23:43:49,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:43:49,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:43:49,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:43:49,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:43:49,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:43:49,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:43:49" (1/1) ... [2023-04-01 23:43:49,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463ce96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:49, skipping insertion in model container [2023-04-01 23:43:49,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:43:49" (1/1) ... [2023-04-01 23:43:49,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:43:49,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:43:49,962 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/Problem18_label34.c[1169,1182] [2023-04-01 23:43:50,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:43:50,438 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:43:50,448 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/Problem18_label34.c[1169,1182] [2023-04-01 23:43:50,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:43:50,712 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:43:50,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50 WrapperNode [2023-04-01 23:43:50,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:43:50,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:43:50,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:43:50,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:43:50,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50" (1/1) ... [2023-04-01 23:43:50,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50" (1/1) ... [2023-04-01 23:43:50,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50" (1/1) ... [2023-04-01 23:43:50,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50" (1/1) ... [2023-04-01 23:43:50,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50" (1/1) ... [2023-04-01 23:43:50,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50" (1/1) ... [2023-04-01 23:43:50,876 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50" (1/1) ... [2023-04-01 23:43:50,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50" (1/1) ... [2023-04-01 23:43:50,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:43:50,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:43:50,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:43:50,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:43:50,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50" (1/1) ... [2023-04-01 23:43:50,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:43:50,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:50,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:43:50,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:43:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:43:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:43:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:43:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:43:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:43:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:43:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:43:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:43:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:43:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:43:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:43:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:43:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:43:51,015 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:43:51,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:43:53,280 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:43:53,289 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:43:53,290 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:43:53,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:43:53 BoogieIcfgContainer [2023-04-01 23:43:53,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:43:53,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:43:53,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:43:53,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:43:53,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:43:49" (1/3) ... [2023-04-01 23:43:53,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3452cc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:43:53, skipping insertion in model container [2023-04-01 23:43:53,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:50" (2/3) ... [2023-04-01 23:43:53,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3452cc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:43:53, skipping insertion in model container [2023-04-01 23:43:53,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:43:53" (3/3) ... [2023-04-01 23:43:53,297 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label34.c [2023-04-01 23:43:53,310 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:43:53,310 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:43:53,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:43:53,382 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33f86a79, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:43:53,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:43:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 23:43:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-01 23:43:53,395 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:53,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:43:53,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:53,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:53,400 INFO L85 PathProgramCache]: Analyzing trace with hash 889624934, now seen corresponding path program 1 times [2023-04-01 23:43:53,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:53,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542819237] [2023-04-01 23:43:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:53,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:43:53,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:53,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542819237] [2023-04-01 23:43:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542819237] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:53,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:43:53,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:43:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567339831] [2023-04-01 23:43:53,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:53,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:43:53,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:53,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:43:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:43:53,744 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:43:57,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:57,551 INFO L93 Difference]: Finished difference Result 2286 states and 4364 transitions. [2023-04-01 23:43:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:43:57,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-04-01 23:43:57,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:57,571 INFO L225 Difference]: With dead ends: 2286 [2023-04-01 23:43:57,571 INFO L226 Difference]: Without dead ends: 1432 [2023-04-01 23:43:57,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:43:57,583 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2272 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:57,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 38 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3226 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 23:43:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-01 23:43:57,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2023-04-01 23:43:57,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1406 states have (on average 1.5896159317211949) internal successors, (2235), 1408 states have internal predecessors, (2235), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:43:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2023-04-01 23:43:57,675 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 13 [2023-04-01 23:43:57,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:57,675 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2023-04-01 23:43:57,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:43:57,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2023-04-01 23:43:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 23:43:57,679 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:57,679 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:43:57,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:43:57,679 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:57,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash -287627059, now seen corresponding path program 1 times [2023-04-01 23:43:57,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:57,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78478164] [2023-04-01 23:43:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:57,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:57,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:43:57,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:57,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78478164] [2023-04-01 23:43:57,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78478164] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:57,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:43:57,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:43:57,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060587129] [2023-04-01 23:43:57,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:57,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:43:57,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:57,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:43:57,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:43:57,992 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:44:03,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:03,772 INFO L93 Difference]: Finished difference Result 5784 states and 9263 transitions. [2023-04-01 23:44:03,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:44:03,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 82 [2023-04-01 23:44:03,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:03,786 INFO L225 Difference]: With dead ends: 5784 [2023-04-01 23:44:03,786 INFO L226 Difference]: Without dead ends: 4362 [2023-04-01 23:44:03,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:44:03,790 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3829 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7436 mSolverCounterSat, 1572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3829 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 9008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1572 IncrementalHoareTripleChecker+Valid, 7436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:03,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3829 Valid, 120 Invalid, 9008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1572 Valid, 7436 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-01 23:44:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2023-04-01 23:44:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4345. [2023-04-01 23:44:03,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4258 states have (on average 1.3586190699859089) internal successors, (5785), 4274 states have internal predecessors, (5785), 20 states have call successors, (20), 20 states have call predecessors, (20), 66 states have return successors, (175), 50 states have call predecessors, (175), 19 states have call successors, (175) [2023-04-01 23:44:03,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5980 transitions. [2023-04-01 23:44:03,870 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5980 transitions. Word has length 82 [2023-04-01 23:44:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:03,870 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 5980 transitions. [2023-04-01 23:44:03,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:44:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5980 transitions. [2023-04-01 23:44:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-04-01 23:44:03,881 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:03,881 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:03,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:44:03,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:03,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:03,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2090294229, now seen corresponding path program 1 times [2023-04-01 23:44:03,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:03,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114431830] [2023-04-01 23:44:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:03,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:04,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:04,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:44:04,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:04,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114431830] [2023-04-01 23:44:04,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114431830] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:04,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348265379] [2023-04-01 23:44:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:04,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:04,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:04,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:04,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:44:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:04,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:04,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:44:04,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:44:04,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348265379] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:04,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:04,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:44:04,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020418436] [2023-04-01 23:44:04,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:44:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:04,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:44:04,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:44:04,847 INFO L87 Difference]: Start difference. First operand 4345 states and 5980 transitions. Second operand has 11 states, 11 states have (on average 31.09090909090909) internal successors, (342), 9 states have internal predecessors, (342), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:44:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:11,168 INFO L93 Difference]: Finished difference Result 14716 states and 20304 transitions. [2023-04-01 23:44:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:44:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 31.09090909090909) internal successors, (342), 9 states have internal predecessors, (342), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 208 [2023-04-01 23:44:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:11,199 INFO L225 Difference]: With dead ends: 14716 [2023-04-01 23:44:11,199 INFO L226 Difference]: Without dead ends: 8832 [2023-04-01 23:44:11,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 420 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:44:11,211 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 3754 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 11933 mSolverCounterSat, 1946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 13879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1946 IncrementalHoareTripleChecker+Valid, 11933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:11,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 205 Invalid, 13879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1946 Valid, 11933 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 23:44:11,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8832 states. [2023-04-01 23:44:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8832 to 7297. [2023-04-01 23:44:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7297 states, 7129 states have (on average 1.1161453219245336) internal successors, (7957), 7172 states have internal predecessors, (7957), 32 states have call successors, (32), 32 states have call predecessors, (32), 135 states have return successors, (343), 92 states have call predecessors, (343), 31 states have call successors, (343) [2023-04-01 23:44:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 8332 transitions. [2023-04-01 23:44:11,423 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 8332 transitions. Word has length 208 [2023-04-01 23:44:11,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:11,426 INFO L495 AbstractCegarLoop]: Abstraction has 7297 states and 8332 transitions. [2023-04-01 23:44:11,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.09090909090909) internal successors, (342), 9 states have internal predecessors, (342), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:44:11,426 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 8332 transitions. [2023-04-01 23:44:11,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-04-01 23:44:11,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:11,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:11,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 23:44:11,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:11,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:11,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1064312006, now seen corresponding path program 1 times [2023-04-01 23:44:11,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:11,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118139138] [2023-04-01 23:44:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:11,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:11,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:44:11,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:11,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118139138] [2023-04-01 23:44:11,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118139138] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:11,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221656709] [2023-04-01 23:44:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:11,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:11,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:11,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:11,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:44:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:11,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:11,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:44:11,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221656709] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:11,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:44:11,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666149459] [2023-04-01 23:44:11,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:11,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:11,972 INFO L87 Difference]: Start difference. First operand 7297 states and 8332 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:13,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:13,421 INFO L93 Difference]: Finished difference Result 14588 states and 16658 transitions. [2023-04-01 23:44:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:13,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 241 [2023-04-01 23:44:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:13,441 INFO L225 Difference]: With dead ends: 14588 [2023-04-01 23:44:13,442 INFO L226 Difference]: Without dead ends: 7297 [2023-04-01 23:44:13,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:13,451 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 762 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:13,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 944 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:44:13,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7297 states. [2023-04-01 23:44:13,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7297 to 7289. [2023-04-01 23:44:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7289 states, 7124 states have (on average 1.0765019651880965) internal successors, (7669), 7166 states have internal predecessors, (7669), 32 states have call successors, (32), 32 states have call predecessors, (32), 132 states have return successors, (244), 90 states have call predecessors, (244), 31 states have call successors, (244) [2023-04-01 23:44:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 7945 transitions. [2023-04-01 23:44:13,554 INFO L78 Accepts]: Start accepts. Automaton has 7289 states and 7945 transitions. Word has length 241 [2023-04-01 23:44:13,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:13,555 INFO L495 AbstractCegarLoop]: Abstraction has 7289 states and 7945 transitions. [2023-04-01 23:44:13,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 7289 states and 7945 transitions. [2023-04-01 23:44:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-04-01 23:44:13,558 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:13,559 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:13,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 23:44:13,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 23:44:13,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:13,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:13,766 INFO L85 PathProgramCache]: Analyzing trace with hash -341327507, now seen corresponding path program 1 times [2023-04-01 23:44:13,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:13,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675511139] [2023-04-01 23:44:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:13,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:44:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:44:13,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:13,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675511139] [2023-04-01 23:44:13,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675511139] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:13,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842425838] [2023-04-01 23:44:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:13,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:13,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:13,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:13,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:44:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:14,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:14,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:44:14,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:14,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842425838] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:14,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:14,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:44:14,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122087817] [2023-04-01 23:44:14,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:14,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:14,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:14,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:14,087 INFO L87 Difference]: Start difference. First operand 7289 states and 7945 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:15,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:15,611 INFO L93 Difference]: Finished difference Result 18850 states and 20880 transitions. [2023-04-01 23:44:15,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:15,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 310 [2023-04-01 23:44:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:15,641 INFO L225 Difference]: With dead ends: 18850 [2023-04-01 23:44:15,641 INFO L226 Difference]: Without dead ends: 11567 [2023-04-01 23:44:15,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:15,655 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 712 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:15,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 282 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:44:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11567 states. [2023-04-01 23:44:15,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11567 to 10865. [2023-04-01 23:44:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10865 states, 10644 states have (on average 1.0697106350995866) internal successors, (11386), 10698 states have internal predecessors, (11386), 47 states have call successors, (47), 47 states have call predecessors, (47), 173 states have return successors, (445), 119 states have call predecessors, (445), 46 states have call successors, (445) [2023-04-01 23:44:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10865 states to 10865 states and 11878 transitions. [2023-04-01 23:44:15,808 INFO L78 Accepts]: Start accepts. Automaton has 10865 states and 11878 transitions. Word has length 310 [2023-04-01 23:44:15,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:15,809 INFO L495 AbstractCegarLoop]: Abstraction has 10865 states and 11878 transitions. [2023-04-01 23:44:15,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 10865 states and 11878 transitions. [2023-04-01 23:44:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-04-01 23:44:15,812 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:15,812 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:15,819 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 23:44:16,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:16,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:16,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2143521694, now seen corresponding path program 1 times [2023-04-01 23:44:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:16,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914698167] [2023-04-01 23:44:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:16,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:44:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,247 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:44:16,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:16,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914698167] [2023-04-01 23:44:16,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914698167] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:16,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618913335] [2023-04-01 23:44:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:16,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:16,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:16,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:16,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:44:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:16,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:44:16,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:16,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618913335] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:16,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:16,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:44:16,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208528113] [2023-04-01 23:44:16,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:16,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:16,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:16,419 INFO L87 Difference]: Start difference. First operand 10865 states and 11878 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:17,915 INFO L93 Difference]: Finished difference Result 25997 states and 28758 transitions. [2023-04-01 23:44:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:17,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 329 [2023-04-01 23:44:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:17,961 INFO L225 Difference]: With dead ends: 25997 [2023-04-01 23:44:17,961 INFO L226 Difference]: Without dead ends: 15138 [2023-04-01 23:44:17,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:17,981 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 725 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:17,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 194 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:44:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2023-04-01 23:44:18,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 13727. [2023-04-01 23:44:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13727 states, 13461 states have (on average 1.0728029121164846) internal successors, (14441), 13524 states have internal predecessors, (14441), 59 states have call successors, (59), 59 states have call predecessors, (59), 206 states have return successors, (651), 143 states have call predecessors, (651), 58 states have call successors, (651) [2023-04-01 23:44:18,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13727 states to 13727 states and 15151 transitions. [2023-04-01 23:44:18,192 INFO L78 Accepts]: Start accepts. Automaton has 13727 states and 15151 transitions. Word has length 329 [2023-04-01 23:44:18,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:18,192 INFO L495 AbstractCegarLoop]: Abstraction has 13727 states and 15151 transitions. [2023-04-01 23:44:18,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:18,193 INFO L276 IsEmpty]: Start isEmpty. Operand 13727 states and 15151 transitions. [2023-04-01 23:44:18,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-04-01 23:44:18,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:18,197 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:18,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:18,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:18,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:18,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:18,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1111474306, now seen corresponding path program 1 times [2023-04-01 23:44:18,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:18,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123992936] [2023-04-01 23:44:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:18,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:44:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:44:18,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:18,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123992936] [2023-04-01 23:44:18,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123992936] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:18,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284637700] [2023-04-01 23:44:18,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:18,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:18,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:18,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:18,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:44:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:18,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:44:18,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:18,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284637700] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:18,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:18,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:44:18,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146625301] [2023-04-01 23:44:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:18,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:18,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:18,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:18,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:18,786 INFO L87 Difference]: Start difference. First operand 13727 states and 15151 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:20,362 INFO L93 Difference]: Finished difference Result 39532 states and 44396 transitions. [2023-04-01 23:44:20,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:20,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 391 [2023-04-01 23:44:20,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:20,420 INFO L225 Difference]: With dead ends: 39532 [2023-04-01 23:44:20,420 INFO L226 Difference]: Without dead ends: 25811 [2023-04-01 23:44:20,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:20,446 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 699 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:20,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1007 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:44:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25811 states. [2023-04-01 23:44:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25811 to 24407. [2023-04-01 23:44:20,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24407 states, 23991 states have (on average 1.0591471801925723) internal successors, (25410), 24084 states have internal predecessors, (25410), 104 states have call successors, (104), 104 states have call predecessors, (104), 311 states have return successors, (1391), 218 states have call predecessors, (1391), 103 states have call successors, (1391) [2023-04-01 23:44:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24407 states to 24407 states and 26905 transitions. [2023-04-01 23:44:20,820 INFO L78 Accepts]: Start accepts. Automaton has 24407 states and 26905 transitions. Word has length 391 [2023-04-01 23:44:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:20,821 INFO L495 AbstractCegarLoop]: Abstraction has 24407 states and 26905 transitions. [2023-04-01 23:44:20,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 24407 states and 26905 transitions. [2023-04-01 23:44:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-04-01 23:44:20,826 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:20,827 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:44:20,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:21,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:21,035 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:21,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:21,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1964418959, now seen corresponding path program 1 times [2023-04-01 23:44:21,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:21,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168580799] [2023-04-01 23:44:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:21,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:21,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:44:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-04-01 23:44:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 305 proven. 11 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-04-01 23:44:21,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:21,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168580799] [2023-04-01 23:44:21,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168580799] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:21,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745611243] [2023-04-01 23:44:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:21,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:21,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:21,481 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:21,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:44:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:21,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:21,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:44:21,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:44:22,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745611243] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:22,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:22,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-04-01 23:44:22,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890217966] [2023-04-01 23:44:22,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:22,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:44:22,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:22,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:44:22,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:44:22,055 INFO L87 Difference]: Start difference. First operand 24407 states and 26905 transitions. Second operand has 13 states, 13 states have (on average 34.84615384615385) internal successors, (453), 11 states have internal predecessors, (453), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:44:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:25,212 INFO L93 Difference]: Finished difference Result 52496 states and 58062 transitions. [2023-04-01 23:44:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:44:25,213 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 34.84615384615385) internal successors, (453), 11 states have internal predecessors, (453), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 418 [2023-04-01 23:44:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:25,276 INFO L225 Difference]: With dead ends: 52496 [2023-04-01 23:44:25,276 INFO L226 Difference]: Without dead ends: 28095 [2023-04-01 23:44:25,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 846 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:44:25,307 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6675 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4119 mSolverCounterSat, 1308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6675 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 5427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 4119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:25,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6675 Valid, 116 Invalid, 5427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 4119 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 23:44:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28095 states. [2023-04-01 23:44:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28095 to 28069. [2023-04-01 23:44:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28069 states, 27562 states have (on average 1.047456643204412) internal successors, (28870), 27686 states have internal predecessors, (28870), 119 states have call successors, (119), 119 states have call predecessors, (119), 387 states have return successors, (1459), 263 states have call predecessors, (1459), 118 states have call successors, (1459) [2023-04-01 23:44:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28069 states to 28069 states and 30448 transitions. [2023-04-01 23:44:25,651 INFO L78 Accepts]: Start accepts. Automaton has 28069 states and 30448 transitions. Word has length 418 [2023-04-01 23:44:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:25,651 INFO L495 AbstractCegarLoop]: Abstraction has 28069 states and 30448 transitions. [2023-04-01 23:44:25,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 34.84615384615385) internal successors, (453), 11 states have internal predecessors, (453), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:44:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 28069 states and 30448 transitions. [2023-04-01 23:44:25,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-04-01 23:44:25,657 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:25,657 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:25,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:25,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:25,864 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:25,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 320124126, now seen corresponding path program 1 times [2023-04-01 23:44:25,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:25,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090457798] [2023-04-01 23:44:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:25,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:26,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:26,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-04-01 23:44:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 141 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-01 23:44:26,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090457798] [2023-04-01 23:44:26,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090457798] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5422494] [2023-04-01 23:44:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:26,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:26,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:26,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:26,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:44:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:26,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:26,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 23:44:26,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 142 proven. 94 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-04-01 23:44:27,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5422494] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:27,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:27,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:44:27,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812565671] [2023-04-01 23:44:27,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:27,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:44:27,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:27,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:44:27,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:44:27,212 INFO L87 Difference]: Start difference. First operand 28069 states and 30448 transitions. Second operand has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:44:33,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:33,233 INFO L93 Difference]: Finished difference Result 90393 states and 100867 transitions. [2023-04-01 23:44:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:44:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 439 [2023-04-01 23:44:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:33,374 INFO L225 Difference]: With dead ends: 90393 [2023-04-01 23:44:33,374 INFO L226 Difference]: Without dead ends: 62330 [2023-04-01 23:44:33,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 893 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:44:33,416 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 5616 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9428 mSolverCounterSat, 1270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5616 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 10698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1270 IncrementalHoareTripleChecker+Valid, 9428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:33,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5616 Valid, 197 Invalid, 10698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1270 Valid, 9428 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-04-01 23:44:33,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62330 states. [2023-04-01 23:44:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62330 to 57401. [2023-04-01 23:44:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57401 states, 56420 states have (on average 1.0494151010280042) internal successors, (59208), 56678 states have internal predecessors, (59208), 242 states have call successors, (242), 242 states have call predecessors, (242), 738 states have return successors, (4339), 480 states have call predecessors, (4339), 241 states have call successors, (4339) [2023-04-01 23:44:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57401 states to 57401 states and 63789 transitions. [2023-04-01 23:44:34,385 INFO L78 Accepts]: Start accepts. Automaton has 57401 states and 63789 transitions. Word has length 439 [2023-04-01 23:44:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:34,385 INFO L495 AbstractCegarLoop]: Abstraction has 57401 states and 63789 transitions. [2023-04-01 23:44:34,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:44:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 57401 states and 63789 transitions. [2023-04-01 23:44:34,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-04-01 23:44:34,399 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:34,399 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:34,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 23:44:34,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:34,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:34,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:34,605 INFO L85 PathProgramCache]: Analyzing trace with hash 188164659, now seen corresponding path program 1 times [2023-04-01 23:44:34,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:34,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463462088] [2023-04-01 23:44:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:34,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:44:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2023-04-01 23:44:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2023-04-01 23:44:35,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:35,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463462088] [2023-04-01 23:44:35,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463462088] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:35,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69669544] [2023-04-01 23:44:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:35,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:35,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:35,346 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:35,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:44:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:35,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-04-01 23:44:35,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:35,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69669544] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:35,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:35,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 23:44:35,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239977149] [2023-04-01 23:44:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:35,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:35,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:35,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:35,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:35,547 INFO L87 Difference]: Start difference. First operand 57401 states and 63789 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:44:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:37,194 INFO L93 Difference]: Finished difference Result 114796 states and 127572 transitions. [2023-04-01 23:44:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:37,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 640 [2023-04-01 23:44:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:37,330 INFO L225 Difference]: With dead ends: 114796 [2023-04-01 23:44:37,330 INFO L226 Difference]: Without dead ends: 57401 [2023-04-01 23:44:37,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:37,400 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 800 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:37,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 791 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 23:44:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57401 states. [2023-04-01 23:44:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57401 to 57401. [2023-04-01 23:44:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57401 states, 56420 states have (on average 1.0434952144629563) internal successors, (58874), 56678 states have internal predecessors, (58874), 242 states have call successors, (242), 242 states have call predecessors, (242), 738 states have return successors, (3849), 480 states have call predecessors, (3849), 241 states have call successors, (3849) [2023-04-01 23:44:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57401 states to 57401 states and 62965 transitions. [2023-04-01 23:44:38,289 INFO L78 Accepts]: Start accepts. Automaton has 57401 states and 62965 transitions. Word has length 640 [2023-04-01 23:44:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:38,290 INFO L495 AbstractCegarLoop]: Abstraction has 57401 states and 62965 transitions. [2023-04-01 23:44:38,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:44:38,290 INFO L276 IsEmpty]: Start isEmpty. Operand 57401 states and 62965 transitions. [2023-04-01 23:44:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2023-04-01 23:44:38,306 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:38,306 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:38,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 23:44:38,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 23:44:38,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:38,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash -865654609, now seen corresponding path program 1 times [2023-04-01 23:44:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:38,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546953340] [2023-04-01 23:44:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:38,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:38,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:38,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:38,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:38,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:44:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:38,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2023-04-01 23:44:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:39,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-04-01 23:44:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 417 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-04-01 23:44:39,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546953340] [2023-04-01 23:44:39,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546953340] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81020027] [2023-04-01 23:44:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:39,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:39,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:39,152 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:39,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:44:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:39,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:39,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 420 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-04-01 23:44:39,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 420 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-04-01 23:44:40,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81020027] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:40,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:40,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:44:40,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779388491] [2023-04-01 23:44:40,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:40,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:44:40,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:44:40,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:44:40,075 INFO L87 Difference]: Start difference. First operand 57401 states and 62965 transitions. Second operand has 11 states, 11 states have (on average 81.18181818181819) internal successors, (893), 9 states have internal predecessors, (893), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:44:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:46,134 INFO L93 Difference]: Finished difference Result 121279 states and 133102 transitions. [2023-04-01 23:44:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:44:46,134 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 81.18181818181819) internal successors, (893), 9 states have internal predecessors, (893), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 712 [2023-04-01 23:44:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:46,376 INFO L225 Difference]: With dead ends: 121279 [2023-04-01 23:44:46,376 INFO L226 Difference]: Without dead ends: 60322 [2023-04-01 23:44:46,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1443 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:44:46,420 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 3480 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 11462 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3484 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 12199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 11462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:46,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3484 Valid, 236 Invalid, 12199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 11462 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 23:44:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60322 states. [2023-04-01 23:44:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60322 to 54615. [2023-04-01 23:44:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54615 states, 53647 states have (on average 1.0290416985106343) internal successors, (55205), 53916 states have internal predecessors, (55205), 230 states have call successors, (230), 230 states have call predecessors, (230), 737 states have return successors, (2599), 468 states have call predecessors, (2599), 229 states have call successors, (2599) [2023-04-01 23:44:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54615 states to 54615 states and 58034 transitions. [2023-04-01 23:44:47,246 INFO L78 Accepts]: Start accepts. Automaton has 54615 states and 58034 transitions. Word has length 712 [2023-04-01 23:44:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:47,247 INFO L495 AbstractCegarLoop]: Abstraction has 54615 states and 58034 transitions. [2023-04-01 23:44:47,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.18181818181819) internal successors, (893), 9 states have internal predecessors, (893), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:44:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 54615 states and 58034 transitions. [2023-04-01 23:44:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-04-01 23:44:47,407 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:47,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:47,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:47,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:47,608 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:47,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash -497226485, now seen corresponding path program 1 times [2023-04-01 23:44:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:47,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454996283] [2023-04-01 23:44:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:47,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:48,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:48,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2023-04-01 23:44:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 260 proven. 6 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-04-01 23:44:49,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454996283] [2023-04-01 23:44:49,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454996283] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487456624] [2023-04-01 23:44:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:49,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:49,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:49,224 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:49,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:44:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:49,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:44:49,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-04-01 23:44:49,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:49,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487456624] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:49,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:49,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-04-01 23:44:49,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862881452] [2023-04-01 23:44:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:49,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:44:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:44:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:44:49,752 INFO L87 Difference]: Start difference. First operand 54615 states and 58034 transitions. Second operand has 5 states, 5 states have (on average 101.6) internal successors, (508), 4 states have internal predecessors, (508), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:44:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:52,287 INFO L93 Difference]: Finished difference Result 113529 states and 120520 transitions. [2023-04-01 23:44:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:44:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 101.6) internal successors, (508), 4 states have internal predecessors, (508), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 716 [2023-04-01 23:44:52,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:52,401 INFO L225 Difference]: With dead ends: 113529 [2023-04-01 23:44:52,402 INFO L226 Difference]: Without dead ends: 58920 [2023-04-01 23:44:52,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:44:52,447 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1902 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:52,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1902 Valid, 107 Invalid, 3397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 3203 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 23:44:52,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58920 states. [2023-04-01 23:44:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58920 to 58176. [2023-04-01 23:44:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58176 states, 57156 states have (on average 1.0278360976975296) internal successors, (58747), 57440 states have internal predecessors, (58747), 245 states have call successors, (245), 245 states have call predecessors, (245), 774 states have return successors, (2694), 490 states have call predecessors, (2694), 244 states have call successors, (2694) [2023-04-01 23:44:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58176 states to 58176 states and 61686 transitions. [2023-04-01 23:44:53,322 INFO L78 Accepts]: Start accepts. Automaton has 58176 states and 61686 transitions. Word has length 716 [2023-04-01 23:44:53,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:53,322 INFO L495 AbstractCegarLoop]: Abstraction has 58176 states and 61686 transitions. [2023-04-01 23:44:53,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.6) internal successors, (508), 4 states have internal predecessors, (508), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:44:53,323 INFO L276 IsEmpty]: Start isEmpty. Operand 58176 states and 61686 transitions. [2023-04-01 23:44:53,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2023-04-01 23:44:53,351 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:53,352 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:53,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:53,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 23:44:53,557 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:53,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:53,781 INFO L85 PathProgramCache]: Analyzing trace with hash 15353666, now seen corresponding path program 1 times [2023-04-01 23:44:53,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:53,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716993188] [2023-04-01 23:44:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:54,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:54,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-04-01 23:44:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2023-04-01 23:44:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:55,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2023-04-01 23:44:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 580 proven. 16 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2023-04-01 23:44:55,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:55,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716993188] [2023-04-01 23:44:55,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716993188] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:55,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099119284] [2023-04-01 23:44:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:55,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:55,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:55,126 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:55,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:44:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:55,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:44:55,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-04-01 23:44:55,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:55,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099119284] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:55,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:55,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-04-01 23:44:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583745180] [2023-04-01 23:44:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:55,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:44:55,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:44:55,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:44:55,678 INFO L87 Difference]: Start difference. First operand 58176 states and 61686 transitions. Second operand has 5 states, 5 states have (on average 113.2) internal successors, (566), 4 states have internal predecessors, (566), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:44:58,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:58,153 INFO L93 Difference]: Finished difference Result 115687 states and 122762 transitions. [2023-04-01 23:44:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:44:58,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 4 states have internal predecessors, (566), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 884 [2023-04-01 23:44:58,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:58,268 INFO L225 Difference]: With dead ends: 115687 [2023-04-01 23:44:58,268 INFO L226 Difference]: Without dead ends: 58227 [2023-04-01 23:44:58,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-04-01 23:44:58,299 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1529 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:58,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 115 Invalid, 3596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 3117 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 23:44:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58227 states. [2023-04-01 23:44:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58227 to 57519. [2023-04-01 23:44:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57519 states, 56485 states have (on average 1.0232982207665753) internal successors, (57801), 56784 states have internal predecessors, (57801), 242 states have call successors, (242), 242 states have call predecessors, (242), 791 states have return successors, (2276), 492 states have call predecessors, (2276), 241 states have call successors, (2276) [2023-04-01 23:44:58,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57519 states to 57519 states and 60319 transitions. [2023-04-01 23:44:58,997 INFO L78 Accepts]: Start accepts. Automaton has 57519 states and 60319 transitions. Word has length 884 [2023-04-01 23:44:58,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:58,997 INFO L495 AbstractCegarLoop]: Abstraction has 57519 states and 60319 transitions. [2023-04-01 23:44:58,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 4 states have internal predecessors, (566), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:44:58,997 INFO L276 IsEmpty]: Start isEmpty. Operand 57519 states and 60319 transitions. [2023-04-01 23:44:59,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1412 [2023-04-01 23:44:59,027 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:59,028 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:59,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:59,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:44:59,233 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:59,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2147289925, now seen corresponding path program 1 times [2023-04-01 23:44:59,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:59,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972060891] [2023-04-01 23:44:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:45:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-04-01 23:45:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 960 [2023-04-01 23:45:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:01,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1212 [2023-04-01 23:45:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1874 backedges. 1146 proven. 16 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2023-04-01 23:45:01,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:01,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972060891] [2023-04-01 23:45:01,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972060891] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:01,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647958573] [2023-04-01 23:45:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:01,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:01,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:01,322 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:01,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:45:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:01,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:01,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1874 backedges. 1335 proven. 2 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2023-04-01 23:45:01,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1874 backedges. 661 proven. 194 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2023-04-01 23:45:03,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647958573] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:03,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:03,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2023-04-01 23:45:03,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255175023] [2023-04-01 23:45:03,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:03,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:45:03,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:03,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:45:03,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:45:03,008 INFO L87 Difference]: Start difference. First operand 57519 states and 60319 transitions. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 13 states have internal predecessors, (1486), 6 states have call successors, (16), 6 states have call predecessors, (16), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 23:45:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:17,109 INFO L93 Difference]: Finished difference Result 176630 states and 186955 transitions. [2023-04-01 23:45:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-04-01 23:45:17,115 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 13 states have internal predecessors, (1486), 6 states have call successors, (16), 6 states have call predecessors, (16), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 1411 [2023-04-01 23:45:17,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:17,345 INFO L225 Difference]: With dead ends: 176630 [2023-04-01 23:45:17,345 INFO L226 Difference]: Without dead ends: 119123 [2023-04-01 23:45:17,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3012 GetRequests, 2914 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1503, Invalid=8003, Unknown=0, NotChecked=0, Total=9506 [2023-04-01 23:45:17,379 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 8890 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 22081 mSolverCounterSat, 2715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8900 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 24796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2715 IncrementalHoareTripleChecker+Valid, 22081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:17,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8900 Valid, 665 Invalid, 24796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2715 Valid, 22081 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-04-01 23:45:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119123 states. [2023-04-01 23:45:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119123 to 97268. [2023-04-01 23:45:18,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97268 states, 95717 states have (on average 1.0186382774219835) internal successors, (97501), 96122 states have internal predecessors, (97501), 410 states have call successors, (410), 410 states have call predecessors, (410), 1140 states have return successors, (3435), 735 states have call predecessors, (3435), 409 states have call successors, (3435) [2023-04-01 23:45:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97268 states to 97268 states and 101346 transitions. [2023-04-01 23:45:18,657 INFO L78 Accepts]: Start accepts. Automaton has 97268 states and 101346 transitions. Word has length 1411 [2023-04-01 23:45:18,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:18,657 INFO L495 AbstractCegarLoop]: Abstraction has 97268 states and 101346 transitions. [2023-04-01 23:45:18,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 13 states have internal predecessors, (1486), 6 states have call successors, (16), 6 states have call predecessors, (16), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 23:45:18,658 INFO L276 IsEmpty]: Start isEmpty. Operand 97268 states and 101346 transitions. [2023-04-01 23:45:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1558 [2023-04-01 23:45:18,695 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:18,696 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:18,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:18,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:45:18,901 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:18,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:18,901 INFO L85 PathProgramCache]: Analyzing trace with hash -878850351, now seen corresponding path program 1 times [2023-04-01 23:45:18,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:18,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181431642] [2023-04-01 23:45:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:18,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:45:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-04-01 23:45:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2023-04-01 23:45:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1358 [2023-04-01 23:45:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2115 backedges. 1361 proven. 6 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2023-04-01 23:45:21,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:21,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181431642] [2023-04-01 23:45:21,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181431642] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:21,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793579573] [2023-04-01 23:45:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:21,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:21,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:21,115 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:21,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:45:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:21,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:45:21,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2115 backedges. 1597 proven. 2 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-04-01 23:45:21,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2115 backedges. 294 proven. 245 refuted. 0 times theorem prover too weak. 1576 trivial. 0 not checked. [2023-04-01 23:45:24,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793579573] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:24,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:24,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 23:45:24,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859239721] [2023-04-01 23:45:24,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:24,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:45:24,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:45:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:45:24,246 INFO L87 Difference]: Start difference. First operand 97268 states and 101346 transitions. Second operand has 14 states, 14 states have (on average 111.0) internal successors, (1554), 12 states have internal predecessors, (1554), 7 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-04-01 23:45:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:38,088 INFO L93 Difference]: Finished difference Result 222851 states and 232677 transitions. [2023-04-01 23:45:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-04-01 23:45:38,089 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 111.0) internal successors, (1554), 12 states have internal predecessors, (1554), 7 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 1557 [2023-04-01 23:45:38,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:38,380 INFO L225 Difference]: With dead ends: 222851 [2023-04-01 23:45:38,380 INFO L226 Difference]: Without dead ends: 126299 [2023-04-01 23:45:38,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3305 GetRequests, 3207 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3597 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1489, Invalid=8213, Unknown=0, NotChecked=0, Total=9702 [2023-04-01 23:45:38,486 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 14285 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 19448 mSolverCounterSat, 2518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14289 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 21966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2518 IncrementalHoareTripleChecker+Valid, 19448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:38,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14289 Valid, 623 Invalid, 21966 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2518 Valid, 19448 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-04-01 23:45:38,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126299 states. [2023-04-01 23:45:39,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126299 to 118490. [2023-04-01 23:45:39,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118490 states, 116690 states have (on average 1.0166252463792955) internal successors, (118630), 117140 states have internal predecessors, (118630), 500 states have call successors, (500), 500 states have call predecessors, (500), 1299 states have return successors, (3809), 849 states have call predecessors, (3809), 499 states have call successors, (3809) [2023-04-01 23:45:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118490 states to 118490 states and 122939 transitions. [2023-04-01 23:45:40,107 INFO L78 Accepts]: Start accepts. Automaton has 118490 states and 122939 transitions. Word has length 1557 [2023-04-01 23:45:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:40,108 INFO L495 AbstractCegarLoop]: Abstraction has 118490 states and 122939 transitions. [2023-04-01 23:45:40,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 111.0) internal successors, (1554), 12 states have internal predecessors, (1554), 7 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-04-01 23:45:40,108 INFO L276 IsEmpty]: Start isEmpty. Operand 118490 states and 122939 transitions. [2023-04-01 23:45:40,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1649 [2023-04-01 23:45:40,553 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:40,559 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:40,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-04-01 23:45:40,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 23:45:40,760 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:40,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash -272116070, now seen corresponding path program 1 times [2023-04-01 23:45:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658586336] [2023-04-01 23:45:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:41,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:45:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:41,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:45:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:42,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1117 [2023-04-01 23:45:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1449 [2023-04-01 23:45:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 598 proven. 468 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2023-04-01 23:45:42,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:42,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658586336] [2023-04-01 23:45:42,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658586336] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:42,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474146095] [2023-04-01 23:45:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:42,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:42,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:42,174 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:42,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:45:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:42,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 2059 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:42,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 819 proven. 2 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2023-04-01 23:45:42,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 819 proven. 2 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2023-04-01 23:45:43,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474146095] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:43,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:43,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:45:43,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960875011] [2023-04-01 23:45:43,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:43,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:45:43,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:43,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:45:43,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:45:43,330 INFO L87 Difference]: Start difference. First operand 118490 states and 122939 transitions. Second operand has 12 states, 12 states have (on average 100.58333333333333) internal successors, (1207), 10 states have internal predecessors, (1207), 5 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-01 23:45:49,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:49,466 INFO L93 Difference]: Finished difference Result 264025 states and 274428 transitions. [2023-04-01 23:45:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 23:45:49,466 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 100.58333333333333) internal successors, (1207), 10 states have internal predecessors, (1207), 5 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 1648 [2023-04-01 23:45:49,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:49,746 INFO L225 Difference]: With dead ends: 264025 [2023-04-01 23:45:49,746 INFO L226 Difference]: Without dead ends: 146251 [2023-04-01 23:45:49,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3355 GetRequests, 3327 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2023-04-01 23:45:49,816 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 5952 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 8040 mSolverCounterSat, 1444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5960 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 9484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1444 IncrementalHoareTripleChecker+Valid, 8040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:49,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5960 Valid, 203 Invalid, 9484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1444 Valid, 8040 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-01 23:45:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146251 states. [2023-04-01 23:45:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146251 to 132816. [2023-04-01 23:45:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132816 states, 130772 states have (on average 1.0145214571926713) internal successors, (132671), 131308 states have internal predecessors, (132671), 560 states have call successors, (560), 560 states have call predecessors, (560), 1483 states have return successors, (3779), 947 states have call predecessors, (3779), 559 states have call successors, (3779) [2023-04-01 23:45:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132816 states to 132816 states and 137010 transitions. [2023-04-01 23:45:51,710 INFO L78 Accepts]: Start accepts. Automaton has 132816 states and 137010 transitions. Word has length 1648 [2023-04-01 23:45:51,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:51,711 INFO L495 AbstractCegarLoop]: Abstraction has 132816 states and 137010 transitions. [2023-04-01 23:45:51,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 100.58333333333333) internal successors, (1207), 10 states have internal predecessors, (1207), 5 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-01 23:45:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 132816 states and 137010 transitions. [2023-04-01 23:45:51,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2023-04-01 23:45:51,741 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:51,742 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:51,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:51,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:51,953 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:51,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2047717673, now seen corresponding path program 1 times [2023-04-01 23:45:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138094871] [2023-04-01 23:45:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:53,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:53,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:53,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:45:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:45:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:45:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:45:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1461 [2023-04-01 23:45:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 1714 proven. 14 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2023-04-01 23:45:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138094871] [2023-04-01 23:45:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138094871] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:54,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301309003] [2023-04-01 23:45:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:54,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:54,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:54,336 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:54,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-01 23:45:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:54,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 23:45:54,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 1725 proven. 14 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-04-01 23:45:55,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 1727 proven. 410 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-04-01 23:45:57,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301309003] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:57,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:57,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 23 [2023-04-01 23:45:57,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072669997] [2023-04-01 23:45:57,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:57,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-01 23:45:57,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:57,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-01 23:45:57,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2023-04-01 23:45:57,214 INFO L87 Difference]: Start difference. First operand 132816 states and 137010 transitions. Second operand has 23 states, 23 states have (on average 84.17391304347827) internal successors, (1936), 21 states have internal predecessors, (1936), 12 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) [2023-04-01 23:46:07,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:46:07,582 INFO L93 Difference]: Finished difference Result 324314 states and 335073 transitions. [2023-04-01 23:46:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 23:46:07,585 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 84.17391304347827) internal successors, (1936), 21 states have internal predecessors, (1936), 12 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) Word has length 1660 [2023-04-01 23:46:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:46:07,984 INFO L225 Difference]: With dead ends: 324314 [2023-04-01 23:46:07,984 INFO L226 Difference]: Without dead ends: 191510 [2023-04-01 23:46:08,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3397 GetRequests, 3351 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=582, Invalid=1488, Unknown=0, NotChecked=0, Total=2070 [2023-04-01 23:46:08,148 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 15808 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13766 mSolverCounterSat, 2140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15808 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 15906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2140 IncrementalHoareTripleChecker+Valid, 13766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:46:08,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15808 Valid, 344 Invalid, 15906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2140 Valid, 13766 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-01 23:46:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191510 states. [2023-04-01 23:46:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191510 to 171058. [2023-04-01 23:46:10,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171058 states, 168550 states have (on average 1.0135924058142984) internal successors, (170841), 169172 states have internal predecessors, (170841), 722 states have call successors, (722), 722 states have call predecessors, (722), 1785 states have return successors, (4588), 1163 states have call predecessors, (4588), 721 states have call successors, (4588) [2023-04-01 23:46:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171058 states to 171058 states and 176151 transitions. [2023-04-01 23:46:10,693 INFO L78 Accepts]: Start accepts. Automaton has 171058 states and 176151 transitions. Word has length 1660 [2023-04-01 23:46:10,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:46:10,693 INFO L495 AbstractCegarLoop]: Abstraction has 171058 states and 176151 transitions. [2023-04-01 23:46:10,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.17391304347827) internal successors, (1936), 21 states have internal predecessors, (1936), 12 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) [2023-04-01 23:46:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 171058 states and 176151 transitions. [2023-04-01 23:46:10,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2023-04-01 23:46:10,725 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:46:10,726 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:46:10,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-01 23:46:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-01 23:46:10,933 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:46:10,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:46:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1849331926, now seen corresponding path program 1 times [2023-04-01 23:46:10,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:46:10,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178022576] [2023-04-01 23:46:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:10,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:46:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:46:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:46:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:46:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:46:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:46:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2023-04-01 23:46:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1514 [2023-04-01 23:46:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 1667 proven. 6 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2023-04-01 23:46:13,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:46:13,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178022576] [2023-04-01 23:46:13,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178022576] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:46:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208978369] [2023-04-01 23:46:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:13,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:13,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:46:13,150 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:46:13,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-01 23:46:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:13,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 2160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:46:13,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:46:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 2024 proven. 2 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2023-04-01 23:46:13,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:46:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 430 proven. 242 refuted. 0 times theorem prover too weak. 2149 trivial. 0 not checked. [2023-04-01 23:46:15,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208978369] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:46:15,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:46:15,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 23:46:15,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054664516] [2023-04-01 23:46:15,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:46:15,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:46:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:46:15,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:46:15,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:46:15,216 INFO L87 Difference]: Start difference. First operand 171058 states and 176151 transitions. Second operand has 14 states, 14 states have (on average 113.64285714285714) internal successors, (1591), 12 states have internal predecessors, (1591), 7 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-04-01 23:46:28,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:46:28,850 INFO L93 Difference]: Finished difference Result 365610 states and 376504 transitions. [2023-04-01 23:46:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-04-01 23:46:28,851 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 113.64285714285714) internal successors, (1591), 12 states have internal predecessors, (1591), 7 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 1713 [2023-04-01 23:46:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:46:29,270 INFO L225 Difference]: With dead ends: 365610 [2023-04-01 23:46:29,270 INFO L226 Difference]: Without dead ends: 193851 [2023-04-01 23:46:29,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3590 GetRequests, 3508 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=997, Invalid=5809, Unknown=0, NotChecked=0, Total=6806 [2023-04-01 23:46:29,677 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 15824 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 19923 mSolverCounterSat, 1686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15836 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 21609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1686 IncrementalHoareTripleChecker+Valid, 19923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:46:29,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15836 Valid, 550 Invalid, 21609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1686 Valid, 19923 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-04-01 23:46:29,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193851 states. [2023-04-01 23:46:32,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193851 to 179695. [2023-04-01 23:46:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179695 states, 177021 states have (on average 1.013179227323312) internal successors, (179354), 177712 states have internal predecessors, (179354), 758 states have call successors, (758), 758 states have call predecessors, (758), 1915 states have return successors, (4677), 1224 states have call predecessors, (4677), 757 states have call successors, (4677) [2023-04-01 23:46:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179695 states to 179695 states and 184789 transitions. [2023-04-01 23:46:32,477 INFO L78 Accepts]: Start accepts. Automaton has 179695 states and 184789 transitions. Word has length 1713 [2023-04-01 23:46:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:46:32,478 INFO L495 AbstractCegarLoop]: Abstraction has 179695 states and 184789 transitions. [2023-04-01 23:46:32,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 113.64285714285714) internal successors, (1591), 12 states have internal predecessors, (1591), 7 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-04-01 23:46:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 179695 states and 184789 transitions. [2023-04-01 23:46:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1797 [2023-04-01 23:46:32,528 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:46:32,528 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:46:32,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-04-01 23:46:32,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-01 23:46:32,729 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:46:32,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:46:32,730 INFO L85 PathProgramCache]: Analyzing trace with hash -345454658, now seen corresponding path program 1 times [2023-04-01 23:46:32,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:46:32,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682212553] [2023-04-01 23:46:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:32,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:46:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:36,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:46:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:46:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:36,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:36,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:46:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:36,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:36,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:46:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:46:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1345 [2023-04-01 23:46:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1597 [2023-04-01 23:46:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3257 backedges. 1983 proven. 492 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-04-01 23:46:37,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:46:37,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682212553] [2023-04-01 23:46:37,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682212553] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:46:37,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671402370] [2023-04-01 23:46:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:37,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:37,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:46:37,631 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:46:37,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-04-01 23:46:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:37,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 23:46:38,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:46:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3257 backedges. 2028 proven. 454 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-04-01 23:46:38,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:46:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3257 backedges. 2036 proven. 634 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-04-01 23:46:40,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671402370] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:46:40,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:46:40,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 11] total 26 [2023-04-01 23:46:40,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244164339] [2023-04-01 23:46:40,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:46:40,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-01 23:46:40,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:46:40,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-01 23:46:40,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:46:40,862 INFO L87 Difference]: Start difference. First operand 179695 states and 184789 transitions. Second operand has 26 states, 26 states have (on average 89.34615384615384) internal successors, (2323), 24 states have internal predecessors, (2323), 14 states have call successors, (24), 10 states have call predecessors, (24), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2023-04-01 23:47:09,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:47:09,673 INFO L93 Difference]: Finished difference Result 398986 states and 410245 transitions. [2023-04-01 23:47:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2023-04-01 23:47:09,673 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 89.34615384615384) internal successors, (2323), 24 states have internal predecessors, (2323), 14 states have call successors, (24), 10 states have call predecessors, (24), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) Word has length 1796 [2023-04-01 23:47:09,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:47:10,156 INFO L225 Difference]: With dead ends: 398986 [2023-04-01 23:47:10,156 INFO L226 Difference]: Without dead ends: 219297 [2023-04-01 23:47:10,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3855 GetRequests, 3694 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9656 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4513, Invalid=21569, Unknown=0, NotChecked=0, Total=26082 [2023-04-01 23:47:10,311 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 24404 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 42140 mSolverCounterSat, 2715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24404 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 44855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2715 IncrementalHoareTripleChecker+Valid, 42140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:47:10,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24404 Valid, 1074 Invalid, 44855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2715 Valid, 42140 Invalid, 0 Unknown, 0 Unchecked, 21.8s Time] [2023-04-01 23:47:10,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219297 states. [2023-04-01 23:47:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219297 to 196721. [2023-04-01 23:47:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196721 states, 193827 states have (on average 1.01216548778034) internal successors, (196185), 194568 states have internal predecessors, (196185), 830 states have call successors, (830), 830 states have call predecessors, (830), 2063 states have return successors, (4808), 1322 states have call predecessors, (4808), 829 states have call successors, (4808) [2023-04-01 23:47:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196721 states to 196721 states and 201823 transitions. [2023-04-01 23:47:13,826 INFO L78 Accepts]: Start accepts. Automaton has 196721 states and 201823 transitions. Word has length 1796 [2023-04-01 23:47:13,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:47:13,827 INFO L495 AbstractCegarLoop]: Abstraction has 196721 states and 201823 transitions. [2023-04-01 23:47:13,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 89.34615384615384) internal successors, (2323), 24 states have internal predecessors, (2323), 14 states have call successors, (24), 10 states have call predecessors, (24), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2023-04-01 23:47:13,828 INFO L276 IsEmpty]: Start isEmpty. Operand 196721 states and 201823 transitions. [2023-04-01 23:47:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2013 [2023-04-01 23:47:14,115 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:47:14,116 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:47:14,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-04-01 23:47:14,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:47:14,322 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:47:14,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:47:14,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1547663378, now seen corresponding path program 1 times [2023-04-01 23:47:14,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:47:14,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659615585] [2023-04-01 23:47:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:47:14,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:47:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:47:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:47:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:47:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:47:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:47:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:47:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:47:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:47:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:47:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:47:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1468 [2023-04-01 23:47:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:47:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1813 [2023-04-01 23:47:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 1005 proven. 546 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2023-04-01 23:47:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:47:16,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659615585] [2023-04-01 23:47:16,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659615585] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:47:16,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46079402] [2023-04-01 23:47:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:47:16,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:47:16,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:47:16,561 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:47:16,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-04-01 23:47:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:47:17,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:47:17,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:47:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 3055 proven. 2 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2023-04-01 23:47:17,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:47:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 1014 proven. 537 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2023-04-01 23:47:18,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46079402] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:47:18,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:47:18,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-04-01 23:47:18,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636061738] [2023-04-01 23:47:18,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:47:18,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:47:18,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:47:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:47:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:47:18,202 INFO L87 Difference]: Start difference. First operand 196721 states and 201823 transitions. Second operand has 13 states, 13 states have (on average 152.30769230769232) internal successors, (1980), 11 states have internal predecessors, (1980), 8 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16)