./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Ackermann03.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:36:32,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:36:32,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:36:32,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:36:32,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:36:32,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:36:32,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:36:32,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:36:32,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:36:32,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:36:32,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:36:32,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:36:32,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:36:32,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:36:32,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:36:32,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:36:32,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:36:32,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:36:32,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:36:32,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:36:32,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:36:32,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:36:32,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:36:32,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:36:32,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:36:32,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:36:32,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:36:32,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:36:32,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:36:32,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:36:32,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:36:32,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:36:32,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:36:32,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:36:32,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:36:32,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:36:32,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:36:32,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:36:32,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:36:32,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:36:32,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:36:32,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 12:36:32,118 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:36:32,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:36:32,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:36:32,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:36:32,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:36:32,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:36:32,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:36:32,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:36:32,120 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:36:32,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:36:32,121 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:36:32,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 12:36:32,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:36:32,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:36:32,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 12:36:32,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:36:32,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 12:36:32,122 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:36:32,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 12:36:32,122 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:36:32,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 12:36:32,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:36:32,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:36:32,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:36:32,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:36:32,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:36:32,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:36:32,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 12:36:32,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 12:36:32,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 12:36:32,124 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:36:32,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 12:36:32,124 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:36:32,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:36:32,124 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:36:32,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd [2023-02-15 12:36:32,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:36:32,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:36:32,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:36:32,334 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:36:32,334 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:36:32,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Ackermann03.c [2023-02-15 12:36:33,250 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:36:33,384 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:36:33,384 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c [2023-02-15 12:36:33,388 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef29afc4/6c11670f994c4897b9cb05a60919f37d/FLAG9324277e9 [2023-02-15 12:36:33,400 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef29afc4/6c11670f994c4897b9cb05a60919f37d [2023-02-15 12:36:33,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:36:33,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:36:33,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:36:33,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:36:33,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:36:33,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522a79db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33, skipping insertion in model container [2023-02-15 12:36:33,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:36:33,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:36:33,527 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c[1168,1181] [2023-02-15 12:36:33,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:36:33,539 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 12:36:33,549 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c[1168,1181] [2023-02-15 12:36:33,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:36:33,560 INFO L208 MainTranslator]: Completed translation [2023-02-15 12:36:33,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33 WrapperNode [2023-02-15 12:36:33,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 12:36:33,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 12:36:33,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 12:36:33,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 12:36:33,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,580 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2023-02-15 12:36:33,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 12:36:33,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 12:36:33,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 12:36:33,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 12:36:33,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,592 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 12:36:33,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 12:36:33,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 12:36:33,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 12:36:33,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (1/1) ... [2023-02-15 12:36:33,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:36:33,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:36:33,617 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) [2023-02-15 12:36:33,619 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 [2023-02-15 12:36:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 12:36:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 12:36:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 12:36:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2023-02-15 12:36:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2023-02-15 12:36:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 12:36:33,685 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 12:36:33,686 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 12:36:33,763 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 12:36:33,767 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 12:36:33,767 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 12:36:33,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:36:33 BoogieIcfgContainer [2023-02-15 12:36:33,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 12:36:33,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 12:36:33,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 12:36:33,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 12:36:33,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:36:33" (1/3) ... [2023-02-15 12:36:33,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f122af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:36:33, skipping insertion in model container [2023-02-15 12:36:33,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:33" (2/3) ... [2023-02-15 12:36:33,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f122af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:36:33, skipping insertion in model container [2023-02-15 12:36:33,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:36:33" (3/3) ... [2023-02-15 12:36:33,773 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2023-02-15 12:36:33,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 12:36:33,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 12:36:33,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 12:36:33,818 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;@12879f8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 12:36:33,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 12:36:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 12:36:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 12:36:33,831 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:36:33,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:36:33,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:36:33,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:36:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1470704041, now seen corresponding path program 1 times [2023-02-15 12:36:33,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:36:33,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122144762] [2023-02-15 12:36:33,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:33,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:36:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:36:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:36:34,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:36:34,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122144762] [2023-02-15 12:36:34,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122144762] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:36:34,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:36:34,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 12:36:34,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090022234] [2023-02-15 12:36:34,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:36:34,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:36:34,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:36:34,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:36:34,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:36:34,112 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 12:36:34,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:36:34,201 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2023-02-15 12:36:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 12:36:34,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-15 12:36:34,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:36:34,215 INFO L225 Difference]: With dead ends: 51 [2023-02-15 12:36:34,215 INFO L226 Difference]: Without dead ends: 25 [2023-02-15 12:36:34,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 12:36:34,220 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:36:34,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 72 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:36:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-15 12:36:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-15 12:36:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-15 12:36:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2023-02-15 12:36:34,246 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 12 [2023-02-15 12:36:34,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:36:34,247 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2023-02-15 12:36:34,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 12:36:34,248 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-02-15 12:36:34,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 12:36:34,251 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:36:34,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:36:34,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 12:36:34,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:36:34,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:36:34,256 INFO L85 PathProgramCache]: Analyzing trace with hash 941922339, now seen corresponding path program 1 times [2023-02-15 12:36:34,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:36:34,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860013258] [2023-02-15 12:36:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:34,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:36:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:36:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:36:34,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:36:34,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860013258] [2023-02-15 12:36:34,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860013258] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:36:34,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663887420] [2023-02-15 12:36:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:34,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:34,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:36:34,427 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) [2023-02-15 12:36:34,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 12:36:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:34,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 12:36:34,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:36:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:36:34,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:36:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:36:34,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663887420] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:36:34,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:36:34,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-02-15 12:36:34,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238071595] [2023-02-15 12:36:34,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:36:34,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 12:36:34,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:36:34,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 12:36:34,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:36:34,597 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-15 12:36:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:36:34,728 INFO L93 Difference]: Finished difference Result 74 states and 126 transitions. [2023-02-15 12:36:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 12:36:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 19 [2023-02-15 12:36:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:36:34,735 INFO L225 Difference]: With dead ends: 74 [2023-02-15 12:36:34,736 INFO L226 Difference]: Without dead ends: 50 [2023-02-15 12:36:34,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-02-15 12:36:34,745 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:36:34,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 91 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:36:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-15 12:36:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-15 12:36:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 10 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (27), 12 states have call predecessors, (27), 10 states have call successors, (27) [2023-02-15 12:36:34,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2023-02-15 12:36:34,764 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 19 [2023-02-15 12:36:34,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:36:34,765 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2023-02-15 12:36:34,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-15 12:36:34,765 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2023-02-15 12:36:34,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-15 12:36:34,773 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:36:34,773 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:36:34,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 12:36:34,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:34,978 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:36:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:36:34,978 INFO L85 PathProgramCache]: Analyzing trace with hash -574784801, now seen corresponding path program 1 times [2023-02-15 12:36:34,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:36:34,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719904276] [2023-02-15 12:36:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:34,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:36:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:35,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:36:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:35,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:35,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-15 12:36:35,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:36:35,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719904276] [2023-02-15 12:36:35,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719904276] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:36:35,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116112771] [2023-02-15 12:36:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:35,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:35,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:36:35,352 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) [2023-02-15 12:36:35,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 12:36:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:35,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 12:36:35,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:36:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-15 12:36:35,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:36:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-15 12:36:35,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116112771] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:36:35,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:36:35,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2023-02-15 12:36:35,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616288675] [2023-02-15 12:36:35,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:36:35,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 12:36:35,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:36:35,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 12:36:35,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-02-15 12:36:35,882 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-15 12:36:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:36:35,967 INFO L93 Difference]: Finished difference Result 120 states and 227 transitions. [2023-02-15 12:36:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 12:36:35,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) Word has length 45 [2023-02-15 12:36:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:36:35,973 INFO L225 Difference]: With dead ends: 120 [2023-02-15 12:36:35,973 INFO L226 Difference]: Without dead ends: 53 [2023-02-15 12:36:35,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 96 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-02-15 12:36:35,976 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:36:35,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 81 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:36:35,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-15 12:36:35,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-02-15 12:36:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (28), 11 states have call predecessors, (28), 8 states have call successors, (28) [2023-02-15 12:36:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2023-02-15 12:36:35,992 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 45 [2023-02-15 12:36:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:36:35,992 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2023-02-15 12:36:35,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-15 12:36:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2023-02-15 12:36:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-02-15 12:36:35,995 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:36:35,995 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 11, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:36:36,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 12:36:36,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-15 12:36:36,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:36:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:36:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2049356910, now seen corresponding path program 2 times [2023-02-15 12:36:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:36:36,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668950305] [2023-02-15 12:36:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:36,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:36:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:36:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:36:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-02-15 12:36:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 127 proven. 266 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-15 12:36:36,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:36:36,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668950305] [2023-02-15 12:36:36,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668950305] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:36:36,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902058051] [2023-02-15 12:36:36,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:36:36,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:36,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:36:36,757 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) [2023-02-15 12:36:36,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 12:36:36,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:36:36,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:36:36,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 12:36:36,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:36:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 360 proven. 86 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-02-15 12:36:36,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:36:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 115 proven. 179 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-02-15 12:36:38,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902058051] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:36:38,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:36:38,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 33 [2023-02-15 12:36:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341891018] [2023-02-15 12:36:38,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:36:38,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-15 12:36:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:36:38,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-15 12:36:38,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2023-02-15 12:36:38,126 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 27 states have internal predecessors, (77), 11 states have call successors, (18), 2 states have call predecessors, (18), 15 states have return successors, (33), 19 states have call predecessors, (33), 11 states have call successors, (33) [2023-02-15 12:36:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:36:38,834 INFO L93 Difference]: Finished difference Result 126 states and 253 transitions. [2023-02-15 12:36:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-15 12:36:38,836 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 27 states have internal predecessors, (77), 11 states have call successors, (18), 2 states have call predecessors, (18), 15 states have return successors, (33), 19 states have call predecessors, (33), 11 states have call successors, (33) Word has length 119 [2023-02-15 12:36:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:36:38,840 INFO L225 Difference]: With dead ends: 126 [2023-02-15 12:36:38,841 INFO L226 Difference]: Without dead ends: 78 [2023-02-15 12:36:38,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=587, Invalid=2835, Unknown=0, NotChecked=0, Total=3422 [2023-02-15 12:36:38,845 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 68 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:36:38,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 178 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:36:38,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-15 12:36:38,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2023-02-15 12:36:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 13 states have call successors, (13), 7 states have call predecessors, (13), 11 states have return successors, (46), 16 states have call predecessors, (46), 13 states have call successors, (46) [2023-02-15 12:36:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 117 transitions. [2023-02-15 12:36:38,861 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 117 transitions. Word has length 119 [2023-02-15 12:36:38,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:36:38,861 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 117 transitions. [2023-02-15 12:36:38,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 27 states have internal predecessors, (77), 11 states have call successors, (18), 2 states have call predecessors, (18), 15 states have return successors, (33), 19 states have call predecessors, (33), 11 states have call successors, (33) [2023-02-15 12:36:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 117 transitions. [2023-02-15 12:36:38,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-02-15 12:36:38,862 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:36:38,863 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 10, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:36:38,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 12:36:39,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:39,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:36:39,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:36:39,070 INFO L85 PathProgramCache]: Analyzing trace with hash -270180431, now seen corresponding path program 3 times [2023-02-15 12:36:39,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:36:39,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996172611] [2023-02-15 12:36:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:39,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:36:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:36:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:36:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-02-15 12:36:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 249 proven. 113 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-02-15 12:36:39,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:36:39,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996172611] [2023-02-15 12:36:39,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996172611] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:36:39,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476463084] [2023-02-15 12:36:39,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:36:39,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:39,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:36:39,454 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) [2023-02-15 12:36:39,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 12:36:39,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-15 12:36:39,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:36:39,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 12:36:39,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:36:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 236 proven. 115 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2023-02-15 12:36:39,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:36:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 252 proven. 113 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-02-15 12:36:40,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476463084] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:36:40,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:36:40,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 23 [2023-02-15 12:36:40,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212358090] [2023-02-15 12:36:40,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:36:40,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-15 12:36:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:36:40,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-15 12:36:40,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-02-15 12:36:40,618 INFO L87 Difference]: Start difference. First operand 77 states and 117 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 21 states have internal predecessors, (63), 11 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (23), 10 states have call predecessors, (23), 11 states have call successors, (23) [2023-02-15 12:36:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:36:40,872 INFO L93 Difference]: Finished difference Result 168 states and 314 transitions. [2023-02-15 12:36:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-15 12:36:40,873 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 21 states have internal predecessors, (63), 11 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (23), 10 states have call predecessors, (23), 11 states have call successors, (23) Word has length 118 [2023-02-15 12:36:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:36:40,875 INFO L225 Difference]: With dead ends: 168 [2023-02-15 12:36:40,875 INFO L226 Difference]: Without dead ends: 100 [2023-02-15 12:36:40,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 250 SyntacticMatches, 13 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=365, Invalid=1195, Unknown=0, NotChecked=0, Total=1560 [2023-02-15 12:36:40,876 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 40 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:36:40,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 166 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:36:40,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-15 12:36:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-02-15 12:36:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 68 states have internal predecessors, (75), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (67), 22 states have call predecessors, (67), 18 states have call successors, (67) [2023-02-15 12:36:40,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 160 transitions. [2023-02-15 12:36:40,886 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 160 transitions. Word has length 118 [2023-02-15 12:36:40,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:36:40,886 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 160 transitions. [2023-02-15 12:36:40,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 21 states have internal predecessors, (63), 11 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (23), 10 states have call predecessors, (23), 11 states have call successors, (23) [2023-02-15 12:36:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 160 transitions. [2023-02-15 12:36:40,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-02-15 12:36:40,888 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:36:40,888 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 12, 9, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:36:40,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 12:36:41,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:41,093 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:36:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:36:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1294012555, now seen corresponding path program 4 times [2023-02-15 12:36:41,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:36:41,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406771037] [2023-02-15 12:36:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:41,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:36:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:36:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:36:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-02-15 12:36:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:36:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 157 proven. 360 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-02-15 12:36:41,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:36:41,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406771037] [2023-02-15 12:36:41,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406771037] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:36:41,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487349557] [2023-02-15 12:36:41,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 12:36:41,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:41,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:36:41,561 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) [2023-02-15 12:36:41,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 12:36:41,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 12:36:41,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:36:41,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 12:36:41,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:36:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 595 proven. 114 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-02-15 12:36:41,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:36:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 160 proven. 360 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-02-15 12:36:42,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487349557] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:36:42,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:36:42,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 17] total 24 [2023-02-15 12:36:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824443775] [2023-02-15 12:36:42,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:36:42,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 12:36:42,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:36:42,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 12:36:42,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2023-02-15 12:36:42,975 INFO L87 Difference]: Start difference. First operand 100 states and 160 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 21 states have internal predecessors, (71), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2023-02-15 12:36:43,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:36:43,270 INFO L93 Difference]: Finished difference Result 191 states and 332 transitions. [2023-02-15 12:36:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 12:36:43,271 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 21 states have internal predecessors, (71), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) Word has length 144 [2023-02-15 12:36:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:36:43,272 INFO L225 Difference]: With dead ends: 191 [2023-02-15 12:36:43,272 INFO L226 Difference]: Without dead ends: 100 [2023-02-15 12:36:43,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 310 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=461, Invalid=1519, Unknown=0, NotChecked=0, Total=1980 [2023-02-15 12:36:43,274 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:36:43,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 188 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:36:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-15 12:36:43,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-02-15 12:36:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 68 states have internal predecessors, (75), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (59), 22 states have call predecessors, (59), 18 states have call successors, (59) [2023-02-15 12:36:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 152 transitions. [2023-02-15 12:36:43,282 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 152 transitions. Word has length 144 [2023-02-15 12:36:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:36:43,283 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 152 transitions. [2023-02-15 12:36:43,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 21 states have internal predecessors, (71), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2023-02-15 12:36:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 152 transitions. [2023-02-15 12:36:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-02-15 12:36:43,284 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:36:43,284 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:36:43,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 12:36:43,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:43,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:36:43,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:36:43,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1701842998, now seen corresponding path program 5 times [2023-02-15 12:36:43,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:36:43,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560299307] [2023-02-15 12:36:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:43,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:36:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:43,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:36:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:43,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:43,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:36:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:43,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:36:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-02-15 12:36:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:36:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-02-15 12:36:44,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:36:44,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560299307] [2023-02-15 12:36:44,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560299307] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:36:44,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922160308] [2023-02-15 12:36:44,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 12:36:44,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:44,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:36:44,269 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) [2023-02-15 12:36:44,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 12:36:44,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-02-15 12:36:44,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:36:44,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-15 12:36:44,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:36:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2023-02-15 12:36:44,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:36:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2023-02-15 12:36:47,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922160308] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:36:47,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:36:47,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2023-02-15 12:36:47,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877528866] [2023-02-15 12:36:47,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:36:47,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-15 12:36:47,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:36:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-15 12:36:47,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2023-02-15 12:36:47,247 INFO L87 Difference]: Start difference. First operand 100 states and 152 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) [2023-02-15 12:36:47,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:36:47,862 INFO L93 Difference]: Finished difference Result 206 states and 359 transitions. [2023-02-15 12:36:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-15 12:36:47,873 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) Word has length 157 [2023-02-15 12:36:47,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:36:47,897 INFO L225 Difference]: With dead ends: 206 [2023-02-15 12:36:47,897 INFO L226 Difference]: Without dead ends: 115 [2023-02-15 12:36:47,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 330 SyntacticMatches, 17 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=799, Invalid=3361, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 12:36:47,899 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 45 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:36:47,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 277 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:36:47,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-15 12:36:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-02-15 12:36:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.105263157894737) internal successors, (84), 77 states have internal predecessors, (84), 21 states have call successors, (21), 9 states have call predecessors, (21), 17 states have return successors, (80), 28 states have call predecessors, (80), 21 states have call successors, (80) [2023-02-15 12:36:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 185 transitions. [2023-02-15 12:36:47,909 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 185 transitions. Word has length 157 [2023-02-15 12:36:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:36:47,910 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 185 transitions. [2023-02-15 12:36:47,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) [2023-02-15 12:36:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 185 transitions. [2023-02-15 12:36:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-02-15 12:36:47,912 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:36:47,912 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:36:47,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 12:36:48,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:48,118 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:36:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:36:48,119 INFO L85 PathProgramCache]: Analyzing trace with hash 332854534, now seen corresponding path program 6 times [2023-02-15 12:36:48,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:36:48,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621856278] [2023-02-15 12:36:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:48,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:36:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:36:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:36:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:36:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-02-15 12:36:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:49,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:49,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:36:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:36:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-02-15 12:36:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-02-15 12:36:49,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:36:49,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621856278] [2023-02-15 12:36:49,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621856278] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:36:49,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408970679] [2023-02-15 12:36:49,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 12:36:49,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:49,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:36:49,210 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) [2023-02-15 12:36:49,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 12:36:49,387 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2023-02-15 12:36:49,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:36:49,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 79 conjunts are in the unsatisfiable core [2023-02-15 12:36:49,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:36:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2023-02-15 12:36:49,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:36:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 597 proven. 189 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2023-02-15 12:36:50,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408970679] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:36:50,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:36:50,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 36 [2023-02-15 12:36:50,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413662183] [2023-02-15 12:36:50,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:36:50,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-15 12:36:50,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:36:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-15 12:36:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2023-02-15 12:36:50,666 INFO L87 Difference]: Start difference. First operand 115 states and 185 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-15 12:36:52,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:36:52,433 INFO L93 Difference]: Finished difference Result 237 states and 471 transitions. [2023-02-15 12:36:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-15 12:36:52,441 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) Word has length 183 [2023-02-15 12:36:52,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:36:52,444 INFO L225 Difference]: With dead ends: 237 [2023-02-15 12:36:52,444 INFO L226 Difference]: Without dead ends: 233 [2023-02-15 12:36:52,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 406 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=582, Invalid=4530, Unknown=0, NotChecked=0, Total=5112 [2023-02-15 12:36:52,446 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 144 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 12:36:52,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 462 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 12:36:52,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-02-15 12:36:52,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 187. [2023-02-15 12:36:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 122 states have (on average 1.0819672131147542) internal successors, (132), 123 states have internal predecessors, (132), 31 states have call successors, (31), 11 states have call predecessors, (31), 33 states have return successors, (230), 52 states have call predecessors, (230), 31 states have call successors, (230) [2023-02-15 12:36:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 393 transitions. [2023-02-15 12:36:52,464 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 393 transitions. Word has length 183 [2023-02-15 12:36:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:36:52,465 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 393 transitions. [2023-02-15 12:36:52,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-15 12:36:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 393 transitions. [2023-02-15 12:36:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-02-15 12:36:52,466 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:36:52,466 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:36:52,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 12:36:52,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:52,672 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:36:52,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:36:52,673 INFO L85 PathProgramCache]: Analyzing trace with hash -860565711, now seen corresponding path program 7 times [2023-02-15 12:36:52,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:36:52,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071362232] [2023-02-15 12:36:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:52,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:36:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:52,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:36:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:36:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:36:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-02-15 12:36:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:36:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:36:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2023-02-15 12:36:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:36:53,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071362232] [2023-02-15 12:36:53,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071362232] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:36:53,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005654273] [2023-02-15 12:36:53,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 12:36:53,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:53,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:36:53,445 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) [2023-02-15 12:36:53,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 12:36:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:53,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 12:36:53,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:36:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2023-02-15 12:36:53,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:36:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2023-02-15 12:36:56,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005654273] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:36:56,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:36:56,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2023-02-15 12:36:56,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043534533] [2023-02-15 12:36:56,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:36:56,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-15 12:36:56,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:36:56,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-15 12:36:56,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 12:36:56,575 INFO L87 Difference]: Start difference. First operand 187 states and 393 transitions. Second operand has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2023-02-15 12:36:57,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:36:57,095 INFO L93 Difference]: Finished difference Result 346 states and 797 transitions. [2023-02-15 12:36:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-15 12:36:57,105 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) Word has length 170 [2023-02-15 12:36:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:36:57,108 INFO L225 Difference]: With dead ends: 346 [2023-02-15 12:36:57,108 INFO L226 Difference]: Without dead ends: 168 [2023-02-15 12:36:57,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 358 SyntacticMatches, 23 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=865, Invalid=3295, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 12:36:57,112 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 76 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:36:57,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 235 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:36:57,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-15 12:36:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-02-15 12:36:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.0818181818181818) internal successors, (119), 111 states have internal predecessors, (119), 27 states have call successors, (27), 10 states have call predecessors, (27), 30 states have return successors, (162), 46 states have call predecessors, (162), 27 states have call successors, (162) [2023-02-15 12:36:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 308 transitions. [2023-02-15 12:36:57,127 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 308 transitions. Word has length 170 [2023-02-15 12:36:57,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:36:57,127 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 308 transitions. [2023-02-15 12:36:57,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2023-02-15 12:36:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 308 transitions. [2023-02-15 12:36:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-02-15 12:36:57,130 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:36:57,130 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:36:57,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-15 12:36:57,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-02-15 12:36:57,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:36:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:36:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash 530318069, now seen corresponding path program 8 times [2023-02-15 12:36:57,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:36:57,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876722009] [2023-02-15 12:36:57,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:36:57,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:36:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:36:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:36:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:36:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-02-15 12:36:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:36:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:36:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:36:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:36:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:36:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-02-15 12:36:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-02-15 12:36:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:36:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 664 proven. 533 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2023-02-15 12:36:58,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:36:58,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876722009] [2023-02-15 12:36:58,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876722009] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:36:58,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095364906] [2023-02-15 12:36:58,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:36:58,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:36:58,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:36:58,231 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) [2023-02-15 12:36:58,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 12:36:58,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:36:58,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:36:58,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-15 12:36:58,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:36:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2023-02-15 12:36:58,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 685 proven. 580 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2023-02-15 12:37:02,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095364906] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:02,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:02,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 32] total 39 [2023-02-15 12:37:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759578510] [2023-02-15 12:37:02,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:02,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-15 12:37:02,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:02,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-15 12:37:02,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 12:37:02,137 INFO L87 Difference]: Start difference. First operand 168 states and 308 transitions. Second operand has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (45), 18 states have call predecessors, (45), 21 states have call successors, (45) [2023-02-15 12:37:02,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:02,745 INFO L93 Difference]: Finished difference Result 349 states and 744 transitions. [2023-02-15 12:37:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-15 12:37:02,745 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (45), 18 states have call predecessors, (45), 21 states have call successors, (45) Word has length 196 [2023-02-15 12:37:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:02,748 INFO L225 Difference]: With dead ends: 349 [2023-02-15 12:37:02,748 INFO L226 Difference]: Without dead ends: 190 [2023-02-15 12:37:02,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 414 SyntacticMatches, 25 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=789, Invalid=3243, Unknown=0, NotChecked=0, Total=4032 [2023-02-15 12:37:02,751 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 138 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:02,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 348 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 12:37:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-15 12:37:02,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2023-02-15 12:37:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 113 states have (on average 1.0707964601769913) internal successors, (121), 114 states have internal predecessors, (121), 28 states have call successors, (28), 10 states have call predecessors, (28), 31 states have return successors, (166), 48 states have call predecessors, (166), 28 states have call successors, (166) [2023-02-15 12:37:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 315 transitions. [2023-02-15 12:37:02,768 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 315 transitions. Word has length 196 [2023-02-15 12:37:02,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:02,768 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 315 transitions. [2023-02-15 12:37:02,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (45), 18 states have call predecessors, (45), 21 states have call successors, (45) [2023-02-15 12:37:02,768 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 315 transitions. [2023-02-15 12:37:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-02-15 12:37:02,770 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:02,770 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:02,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:02,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 12:37:02,976 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:02,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:02,976 INFO L85 PathProgramCache]: Analyzing trace with hash 660925528, now seen corresponding path program 9 times [2023-02-15 12:37:02,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:02,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884178058] [2023-02-15 12:37:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:02,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:37:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:37:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-02-15 12:37:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:37:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-02-15 12:37:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-02-15 12:37:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 267 proven. 793 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2023-02-15 12:37:03,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:03,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884178058] [2023-02-15 12:37:03,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884178058] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:03,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541781623] [2023-02-15 12:37:03,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:37:03,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:03,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:03,587 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) [2023-02-15 12:37:03,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 12:37:03,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-02-15 12:37:03,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:03,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 12:37:03,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1340 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2023-02-15 12:37:03,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 274 proven. 806 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2023-02-15 12:37:05,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541781623] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:05,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:05,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 28 [2023-02-15 12:37:05,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739384799] [2023-02-15 12:37:05,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:05,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 12:37:05,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:05,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 12:37:05,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-02-15 12:37:05,686 INFO L87 Difference]: Start difference. First operand 173 states and 315 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2023-02-15 12:37:05,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:05,997 INFO L93 Difference]: Finished difference Result 338 states and 689 transitions. [2023-02-15 12:37:05,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 12:37:05,998 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 209 [2023-02-15 12:37:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:06,002 INFO L225 Difference]: With dead ends: 338 [2023-02-15 12:37:06,002 INFO L226 Difference]: Without dead ends: 174 [2023-02-15 12:37:06,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 456 SyntacticMatches, 15 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=423, Invalid=1557, Unknown=0, NotChecked=0, Total=1980 [2023-02-15 12:37:06,005 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 52 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:06,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 260 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:37:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-02-15 12:37:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2023-02-15 12:37:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 113 states have (on average 1.0707964601769913) internal successors, (121), 114 states have internal predecessors, (121), 28 states have call successors, (28), 10 states have call predecessors, (28), 31 states have return successors, (162), 48 states have call predecessors, (162), 28 states have call successors, (162) [2023-02-15 12:37:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 311 transitions. [2023-02-15 12:37:06,016 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 311 transitions. Word has length 209 [2023-02-15 12:37:06,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:06,018 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 311 transitions. [2023-02-15 12:37:06,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2023-02-15 12:37:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 311 transitions. [2023-02-15 12:37:06,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-02-15 12:37:06,020 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:06,020 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 23, 19, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:06,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:06,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 12:37:06,226 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:06,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:06,226 INFO L85 PathProgramCache]: Analyzing trace with hash 471385981, now seen corresponding path program 10 times [2023-02-15 12:37:06,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:06,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984652374] [2023-02-15 12:37:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:06,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:37:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-02-15 12:37:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:37:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-02-15 12:37:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-02-15 12:37:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:37:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-02-15 12:37:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-02-15 12:37:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 228 proven. 519 refuted. 0 times theorem prover too weak. 3582 trivial. 0 not checked. [2023-02-15 12:37:06,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:06,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984652374] [2023-02-15 12:37:06,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984652374] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:06,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385387450] [2023-02-15 12:37:06,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 12:37:06,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:06,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:06,785 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) [2023-02-15 12:37:06,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 12:37:07,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 12:37:07,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:07,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 12:37:07,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 507 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2023-02-15 12:37:07,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 522 refuted. 0 times theorem prover too weak. 3573 trivial. 0 not checked. [2023-02-15 12:37:07,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385387450] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:07,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:07,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 15 [2023-02-15 12:37:07,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126781742] [2023-02-15 12:37:07,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:07,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 12:37:07,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:07,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 12:37:07,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-02-15 12:37:07,838 INFO L87 Difference]: Start difference. First operand 173 states and 311 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (18), 7 states have call predecessors, (18), 11 states have call successors, (18) [2023-02-15 12:37:07,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:07,951 INFO L93 Difference]: Finished difference Result 177 states and 314 transitions. [2023-02-15 12:37:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 12:37:07,951 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (18), 7 states have call predecessors, (18), 11 states have call successors, (18) Word has length 281 [2023-02-15 12:37:07,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:07,954 INFO L225 Difference]: With dead ends: 177 [2023-02-15 12:37:07,954 INFO L226 Difference]: Without dead ends: 173 [2023-02-15 12:37:07,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 634 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2023-02-15 12:37:07,955 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:07,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 107 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:37:07,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-02-15 12:37:07,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 161. [2023-02-15 12:37:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 105 states have (on average 1.0761904761904761) internal successors, (113), 106 states have internal predecessors, (113), 28 states have call successors, (28), 10 states have call predecessors, (28), 27 states have return successors, (126), 44 states have call predecessors, (126), 28 states have call successors, (126) [2023-02-15 12:37:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 267 transitions. [2023-02-15 12:37:07,965 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 267 transitions. Word has length 281 [2023-02-15 12:37:07,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:07,965 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 267 transitions. [2023-02-15 12:37:07,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (18), 7 states have call predecessors, (18), 11 states have call successors, (18) [2023-02-15 12:37:07,965 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 267 transitions. [2023-02-15 12:37:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-02-15 12:37:07,967 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:07,967 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 23, 18, 17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:07,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:08,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-15 12:37:08,174 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:08,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:08,174 INFO L85 PathProgramCache]: Analyzing trace with hash 582117116, now seen corresponding path program 11 times [2023-02-15 12:37:08,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:08,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54631941] [2023-02-15 12:37:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:37:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:08,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-02-15 12:37:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:37:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-02-15 12:37:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:37:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-02-15 12:37:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-02-15 12:37:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 599 proven. 1333 refuted. 0 times theorem prover too weak. 2175 trivial. 0 not checked. [2023-02-15 12:37:09,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:09,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54631941] [2023-02-15 12:37:09,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54631941] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:09,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404599992] [2023-02-15 12:37:09,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 12:37:09,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:09,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:09,191 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) [2023-02-15 12:37:09,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 12:37:09,480 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-02-15 12:37:09,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:09,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-15 12:37:09,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 2428 proven. 401 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2023-02-15 12:37:09,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 700 proven. 1204 refuted. 0 times theorem prover too weak. 2203 trivial. 0 not checked. [2023-02-15 12:37:14,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404599992] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:14,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:14,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 29] total 39 [2023-02-15 12:37:14,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679528661] [2023-02-15 12:37:14,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:14,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-15 12:37:14,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:14,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-15 12:37:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 12:37:14,338 INFO L87 Difference]: Start difference. First operand 161 states and 267 transitions. Second operand has 39 states, 39 states have (on average 2.58974358974359) internal successors, (101), 34 states have internal predecessors, (101), 20 states have call successors, (26), 2 states have call predecessors, (26), 19 states have return successors, (46), 19 states have call predecessors, (46), 20 states have call successors, (46) [2023-02-15 12:37:15,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:15,134 INFO L93 Difference]: Finished difference Result 308 states and 572 transitions. [2023-02-15 12:37:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-15 12:37:15,135 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.58974358974359) internal successors, (101), 34 states have internal predecessors, (101), 20 states have call successors, (26), 2 states have call predecessors, (26), 19 states have return successors, (46), 19 states have call predecessors, (46), 20 states have call successors, (46) Word has length 275 [2023-02-15 12:37:15,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:15,137 INFO L225 Difference]: With dead ends: 308 [2023-02-15 12:37:15,137 INFO L226 Difference]: Without dead ends: 156 [2023-02-15 12:37:15,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 598 SyntacticMatches, 25 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1096, Invalid=4306, Unknown=0, NotChecked=0, Total=5402 [2023-02-15 12:37:15,140 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 103 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:15,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 270 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 12:37:15,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-15 12:37:15,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-02-15 12:37:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 103 states have internal predecessors, (110), 27 states have call successors, (27), 10 states have call predecessors, (27), 26 states have return successors, (105), 42 states have call predecessors, (105), 27 states have call successors, (105) [2023-02-15 12:37:15,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 242 transitions. [2023-02-15 12:37:15,148 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 242 transitions. Word has length 275 [2023-02-15 12:37:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:15,148 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 242 transitions. [2023-02-15 12:37:15,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.58974358974359) internal successors, (101), 34 states have internal predecessors, (101), 20 states have call successors, (26), 2 states have call predecessors, (26), 19 states have return successors, (46), 19 states have call predecessors, (46), 20 states have call successors, (46) [2023-02-15 12:37:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 242 transitions. [2023-02-15 12:37:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-02-15 12:37:15,150 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:15,150 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 24, 19, 18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:15,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:15,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-15 12:37:15,357 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:15,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:15,357 INFO L85 PathProgramCache]: Analyzing trace with hash 160073869, now seen corresponding path program 12 times [2023-02-15 12:37:15,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:15,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665843840] [2023-02-15 12:37:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:15,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 12:37:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-02-15 12:37:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:37:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-02-15 12:37:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-02-15 12:37:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-15 12:37:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 12:37:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 12:37:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-15 12:37:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-02-15 12:37:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-02-15 12:37:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 563 proven. 1446 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2023-02-15 12:37:16,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665843840] [2023-02-15 12:37:16,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665843840] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475107557] [2023-02-15 12:37:16,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 12:37:16,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:16,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:16,191 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) [2023-02-15 12:37:16,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 12:37:16,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2023-02-15 12:37:16,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:16,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 12:37:16,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 342 proven. 850 refuted. 0 times theorem prover too weak. 3338 trivial. 0 not checked. [2023-02-15 12:37:16,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 352 proven. 878 refuted. 0 times theorem prover too weak. 3300 trivial. 0 not checked. [2023-02-15 12:37:17,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475107557] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:17,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:17,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 11] total 17 [2023-02-15 12:37:17,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818382661] [2023-02-15 12:37:17,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:17,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 12:37:17,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:17,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 12:37:17,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-02-15 12:37:17,968 INFO L87 Difference]: Start difference. First operand 156 states and 242 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 11 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2023-02-15 12:37:18,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:18,114 INFO L93 Difference]: Finished difference Result 304 states and 532 transitions. [2023-02-15 12:37:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 12:37:18,115 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 11 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) Word has length 288 [2023-02-15 12:37:18,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:18,116 INFO L225 Difference]: With dead ends: 304 [2023-02-15 12:37:18,116 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 12:37:18,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 656 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-02-15 12:37:18,118 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 45 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:18,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 143 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:37:18,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 12:37:18,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 12:37:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:37:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 12:37:18,119 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 288 [2023-02-15 12:37:18,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:18,119 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 12:37:18,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 11 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2023-02-15 12:37:18,119 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 12:37:18,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 12:37:18,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 12:37:18,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:18,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-15 12:37:18,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 12:37:19,716 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 12:37:19,716 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 12:37:19,716 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 33) no Hoare annotation was computed. [2023-02-15 12:37:19,716 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 12:37:19,716 INFO L902 garLoopResultBuilder]: At program point L27(lines 27 47) the Hoare annotation is: true [2023-02-15 12:37:19,717 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2023-02-15 12:37:19,717 INFO L899 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2023-02-15 12:37:19,717 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2023-02-15 12:37:19,717 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 12:37:19,717 INFO L902 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: true [2023-02-15 12:37:19,717 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2023-02-15 12:37:19,717 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 40) no Hoare annotation was computed. [2023-02-15 12:37:19,717 INFO L899 garLoopResultBuilder]: For program point ackermannEXIT(lines 16 24) no Hoare annotation was computed. [2023-02-15 12:37:19,718 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (or (not (<= 1 |ackermann_#in~n|)) (not (= |ackermann_#in~m| 0)) (not (< |ackermann_#in~n| 2))) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2023-02-15 12:37:19,718 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-02-15 12:37:19,718 INFO L895 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2023-02-15 12:37:19,718 INFO L895 garLoopResultBuilder]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse5 (<= |ackermann_#t~ret5| 5)) (.cse7 (<= 3 |ackermann_#in~n|)) (.cse9 (<= 2 |ackermann_#in~n|)) (.cse11 (<= 1 |ackermann_#in~m|)) (.cse6 (<= |ackermann_#in~m| 1)) (.cse4 (<= 5 |ackermann_#t~ret5|)) (.cse12 (<= 3 |ackermann_#in~m|)) (.cse13 (<= 2 |ackermann_#in~m|)) (.cse8 (<= 3 |ackermann_#t~ret5|)) (.cse0 (= ackermann_~n |ackermann_#in~n|)) (.cse1 (<= 1 |ackermann_#in~n|)) (.cse2 (= ackermann_~m |ackermann_#in~m|)) (.cse10 (<= |ackermann_#t~ret5| 3)) (.cse3 (<= |ackermann_#in~n| 1))) (and (or (and (<= |ackermann_#t~ret5| 2) .cse0 (<= 2 |ackermann_#t~ret5|) .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse0 (<= 4 |ackermann_#in~n|) .cse2 (<= |ackermann_#in~n| 4)) (not .cse6) (and (<= |ackermann_#in~n| 3) (<= |ackermann_#t~ret5| 4) .cse0 .cse7 .cse2 (<= 4 |ackermann_#t~ret5|)) (and (<= |ackermann_#in~n| 2) .cse8 .cse0 .cse9 .cse2 .cse10) (and .cse4 .cse0 .cse2 (<= 6 |ackermann_#in~n|)) (not .cse11) (and (<= 6 |ackermann_#t~ret5|) .cse0 (<= |ackermann_#t~ret5| 6) .cse2 (<= 5 |ackermann_#in~n|))) (or .cse5 .cse7 .cse12 (not .cse13)) (or (and (= |ackermann_#in~m| 0) .cse0 .cse2) (and .cse4 .cse13 .cse0 .cse9 .cse2) (and .cse11 .cse6) (and .cse4 .cse0 .cse12 .cse1 .cse2) (and .cse13 .cse8 .cse0 (<= ackermann_~m 2) .cse1 .cse2 .cse10 .cse3)))) [2023-02-15 12:37:19,718 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2023-02-15 12:37:19,718 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-02-15 12:37:19,718 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2023-02-15 12:37:19,719 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 19) no Hoare annotation was computed. [2023-02-15 12:37:19,719 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 24) the Hoare annotation is: true [2023-02-15 12:37:19,719 INFO L899 garLoopResultBuilder]: For program point ackermannFINAL(lines 16 24) no Hoare annotation was computed. [2023-02-15 12:37:19,721 INFO L445 BasicCegarLoop]: Path program histogram: [12, 1, 1] [2023-02-15 12:37:19,723 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 12:37:19,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:37:19 BoogieIcfgContainer [2023-02-15 12:37:19,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 12:37:19,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 12:37:19,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 12:37:19,729 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 12:37:19,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:36:33" (3/4) ... [2023-02-15 12:37:19,731 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 12:37:19,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2023-02-15 12:37:19,738 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-02-15 12:37:19,738 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-02-15 12:37:19,739 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 12:37:19,739 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 12:37:19,758 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 12:37:19,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 12:37:19,759 INFO L158 Benchmark]: Toolchain (without parser) took 46355.32ms. Allocated memory was 153.1MB in the beginning and 509.6MB in the end (delta: 356.5MB). Free memory was 114.5MB in the beginning and 216.8MB in the end (delta: -102.2MB). Peak memory consumption was 256.0MB. Max. memory is 16.1GB. [2023-02-15 12:37:19,759 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 153.1MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:37:19,759 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.63ms. Allocated memory is still 153.1MB. Free memory was 114.2MB in the beginning and 104.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:37:19,759 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.57ms. Allocated memory is still 153.1MB. Free memory was 104.2MB in the beginning and 102.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 12:37:19,759 INFO L158 Benchmark]: Boogie Preprocessor took 11.90ms. Allocated memory is still 153.1MB. Free memory was 102.7MB in the beginning and 101.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:37:19,760 INFO L158 Benchmark]: RCFGBuilder took 174.44ms. Allocated memory is still 153.1MB. Free memory was 101.6MB in the beginning and 91.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:37:19,760 INFO L158 Benchmark]: TraceAbstraction took 45958.88ms. Allocated memory was 153.1MB in the beginning and 509.6MB in the end (delta: 356.5MB). Free memory was 90.6MB in the beginning and 218.9MB in the end (delta: -128.3MB). Peak memory consumption was 228.7MB. Max. memory is 16.1GB. [2023-02-15 12:37:19,760 INFO L158 Benchmark]: Witness Printer took 29.42ms. Allocated memory is still 509.6MB. Free memory was 218.9MB in the beginning and 216.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 12:37:19,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 153.1MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.63ms. Allocated memory is still 153.1MB. Free memory was 114.2MB in the beginning and 104.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.57ms. Allocated memory is still 153.1MB. Free memory was 104.2MB in the beginning and 102.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.90ms. Allocated memory is still 153.1MB. Free memory was 102.7MB in the beginning and 101.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 174.44ms. Allocated memory is still 153.1MB. Free memory was 101.6MB in the beginning and 91.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 45958.88ms. Allocated memory was 153.1MB in the beginning and 509.6MB in the end (delta: 356.5MB). Free memory was 90.6MB in the beginning and 218.9MB in the end (delta: -128.3MB). Peak memory consumption was 228.7MB. Max. memory is 16.1GB. * Witness Printer took 29.42ms. Allocated memory is still 509.6MB. Free memory was 218.9MB in the beginning and 216.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.9s, OverallIterations: 14, TraceHistogramMax: 43, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 904 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 840 mSDsluCounter, 2878 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2500 mSDsCounter, 1412 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7120 IncrementalHoareTripleChecker+Invalid, 8532 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1412 mSolverCounterUnsat, 378 mSDtfsCounter, 7120 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5537 GetRequests, 4803 SyntacticMatches, 157 SemanticMatches, 577 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7708 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=187occurred in iteration=8, InterpolantAutomatonStates: 330, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 77 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 938 PreInvPairs, 2505 NumberOfFragments, 237 HoareAnnotationTreeSize, 938 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 15588 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 32.2s InterpolantComputationTime, 4420 NumberOfCodeBlocks, 4197 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 6584 ConstructedInterpolants, 0 QuantifiedInterpolants, 12631 SizeOfPredicates, 117 NumberOfNonLiveVariables, 6042 ConjunctsInSsa, 355 ConjunctsInUnsatCore, 40 InterpolantComputations, 1 PerfectInterpolantSequences, 57260/72621 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-15 12:37:19,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE