./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/bitvector/soft_float_5a.c.cil.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 f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:43:20,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:43:20,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:43:20,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:43:20,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:43:20,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:43:20,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:43:20,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:43:20,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:43:20,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:43:20,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:43:20,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:43:20,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:43:20,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:43:20,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:43:20,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:43:20,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:43:20,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:43:20,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:43:20,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:43:20,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:43:20,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:43:20,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:43:20,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:43:20,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:43:20,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:43:20,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:43:20,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:43:20,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:43:20,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:43:20,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:43:20,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:43:20,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:43:20,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:43:20,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:43:20,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:43:20,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:43:20,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:43:20,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:43:20,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:43:20,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:43:20,231 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:43:20,254 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:43:20,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:43:20,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:43:20,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:43:20,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:43:20,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:43:20,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:43:20,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:43:20,256 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:43:20,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:43:20,257 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:43:20,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:43:20,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:43:20,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:43:20,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:43:20,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:43:20,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:43:20,258 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:43:20,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:43:20,258 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:43:20,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:43:20,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:43:20,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:43:20,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:43:20,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:43:20,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:43:20,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:43:20,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:43:20,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:43:20,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:43:20,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:43:20,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:43:20,260 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:43:20,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:43:20,260 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:43:20,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2023-02-16 00:43:20,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:43:20,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:43:20,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:43:20,475 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:43:20,475 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:43:20,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2023-02-16 00:43:21,515 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:43:21,667 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:43:21,668 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2023-02-16 00:43:21,672 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9d5ac30/6d4bf528ba58482d995cdda3da882f68/FLAGe30c58e6e [2023-02-16 00:43:22,099 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9d5ac30/6d4bf528ba58482d995cdda3da882f68 [2023-02-16 00:43:22,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:43:22,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:43:22,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:43:22,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:43:22,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:43:22,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49733904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22, skipping insertion in model container [2023-02-16 00:43:22,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:43:22,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:43:22,230 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/bitvector/soft_float_5a.c.cil.c[728,741] [2023-02-16 00:43:22,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:43:22,266 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:43:22,274 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/bitvector/soft_float_5a.c.cil.c[728,741] [2023-02-16 00:43:22,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:43:22,302 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:43:22,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22 WrapperNode [2023-02-16 00:43:22,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:43:22,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:43:22,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:43:22,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:43:22,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,330 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 166 [2023-02-16 00:43:22,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:43:22,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:43:22,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:43:22,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:43:22,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,350 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:43:22,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:43:22,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:43:22,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:43:22,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (1/1) ... [2023-02-16 00:43:22,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:43:22,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:22,374 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) [2023-02-16 00:43:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:43:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:43:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-02-16 00:43:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-02-16 00:43:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:43:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:43:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 00:43:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 00:43:22,396 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 [2023-02-16 00:43:22,462 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:43:22,463 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:43:22,922 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:43:22,927 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:43:22,927 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 00:43:22,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:43:22 BoogieIcfgContainer [2023-02-16 00:43:22,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:43:22,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:43:22,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:43:22,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:43:22,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:43:22" (1/3) ... [2023-02-16 00:43:22,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188924f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:43:22, skipping insertion in model container [2023-02-16 00:43:22,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:43:22" (2/3) ... [2023-02-16 00:43:22,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188924f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:43:22, skipping insertion in model container [2023-02-16 00:43:22,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:43:22" (3/3) ... [2023-02-16 00:43:22,947 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2023-02-16 00:43:22,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:43:22,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:43:23,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:43:23,008 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;@628b0824, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:43:23,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:43:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 66 states have (on average 1.606060606060606) internal successors, (106), 68 states have internal predecessors, (106), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:43:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-16 00:43:23,018 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:23,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:23,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash -793971860, now seen corresponding path program 1 times [2023-02-16 00:43:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:23,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53956020] [2023-02-16 00:43:23,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:23,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-16 00:43:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-16 00:43:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:23,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53956020] [2023-02-16 00:43:23,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53956020] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:43:23,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:43:23,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:43:23,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579988674] [2023-02-16 00:43:23,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:23,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:43:23,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:43:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:43:23,321 INFO L87 Difference]: Start difference. First operand has 75 states, 66 states have (on average 1.606060606060606) internal successors, (106), 68 states have internal predecessors, (106), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:23,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:23,357 INFO L93 Difference]: Finished difference Result 181 states and 286 transitions. [2023-02-16 00:43:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:43:23,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2023-02-16 00:43:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:23,371 INFO L225 Difference]: With dead ends: 181 [2023-02-16 00:43:23,371 INFO L226 Difference]: Without dead ends: 69 [2023-02-16 00:43:23,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:43:23,375 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 45 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:23,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 212 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-16 00:43:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-02-16 00:43:23,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 62 states have internal predecessors, (92), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 00:43:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 101 transitions. [2023-02-16 00:43:23,417 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 101 transitions. Word has length 42 [2023-02-16 00:43:23,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:23,418 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 101 transitions. [2023-02-16 00:43:23,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:23,419 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 101 transitions. [2023-02-16 00:43:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 00:43:23,423 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:23,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:23,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:43:23,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:23,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1001939418, now seen corresponding path program 1 times [2023-02-16 00:43:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:23,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311336076] [2023-02-16 00:43:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:23,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-16 00:43:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-16 00:43:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:23,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:23,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311336076] [2023-02-16 00:43:23,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311336076] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:43:23,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:43:23,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:43:23,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500126091] [2023-02-16 00:43:23,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:23,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:43:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:43:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:43:23,603 INFO L87 Difference]: Start difference. First operand 69 states and 101 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:23,641 INFO L93 Difference]: Finished difference Result 108 states and 158 transitions. [2023-02-16 00:43:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:43:23,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2023-02-16 00:43:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:23,644 INFO L225 Difference]: With dead ends: 108 [2023-02-16 00:43:23,644 INFO L226 Difference]: Without dead ends: 69 [2023-02-16 00:43:23,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:43:23,649 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 88 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:23,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 295 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:23,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-16 00:43:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-02-16 00:43:23,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 00:43:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 100 transitions. [2023-02-16 00:43:23,662 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 100 transitions. Word has length 44 [2023-02-16 00:43:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:23,662 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 100 transitions. [2023-02-16 00:43:23,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 100 transitions. [2023-02-16 00:43:23,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 00:43:23,664 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:23,664 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:23,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 00:43:23,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:23,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1588745432, now seen corresponding path program 1 times [2023-02-16 00:43:23,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:23,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864376842] [2023-02-16 00:43:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:23,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-16 00:43:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-16 00:43:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:23,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:23,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864376842] [2023-02-16 00:43:23,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864376842] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:23,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598737158] [2023-02-16 00:43:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:23,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:23,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:23,756 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) [2023-02-16 00:43:23,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:43:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:23,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 00:43:23,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 00:43:23,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-16 00:43:24,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598737158] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:24,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:43:24,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 9] total 15 [2023-02-16 00:43:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418355399] [2023-02-16 00:43:24,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:24,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 00:43:24,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:24,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 00:43:24,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-02-16 00:43:24,037 INFO L87 Difference]: Start difference. First operand 69 states and 100 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:24,097 INFO L93 Difference]: Finished difference Result 115 states and 167 transitions. [2023-02-16 00:43:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 00:43:24,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2023-02-16 00:43:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:24,100 INFO L225 Difference]: With dead ends: 115 [2023-02-16 00:43:24,100 INFO L226 Difference]: Without dead ends: 110 [2023-02-16 00:43:24,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-02-16 00:43:24,101 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 101 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:24,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 542 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-02-16 00:43:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2023-02-16 00:43:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 99 states have (on average 1.4646464646464648) internal successors, (145), 99 states have internal predecessors, (145), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 00:43:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 158 transitions. [2023-02-16 00:43:24,109 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 158 transitions. Word has length 44 [2023-02-16 00:43:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:24,110 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 158 transitions. [2023-02-16 00:43:24,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 158 transitions. [2023-02-16 00:43:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 00:43:24,111 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:24,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:24,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 00:43:24,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:24,316 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:24,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:24,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1249479986, now seen corresponding path program 1 times [2023-02-16 00:43:24,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:24,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357707020] [2023-02-16 00:43:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:24,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-16 00:43:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-16 00:43:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:24,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:24,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357707020] [2023-02-16 00:43:24,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357707020] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:24,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478691924] [2023-02-16 00:43:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:24,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:24,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:24,386 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) [2023-02-16 00:43:24,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:43:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 00:43:24,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:24,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:24,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478691924] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:24,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:43:24,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 12 [2023-02-16 00:43:24,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044428505] [2023-02-16 00:43:24,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:24,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:43:24,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:24,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:43:24,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:43:24,531 INFO L87 Difference]: Start difference. First operand 107 states and 158 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:24,570 INFO L93 Difference]: Finished difference Result 124 states and 176 transitions. [2023-02-16 00:43:24,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 00:43:24,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2023-02-16 00:43:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:24,582 INFO L225 Difference]: With dead ends: 124 [2023-02-16 00:43:24,585 INFO L226 Difference]: Without dead ends: 118 [2023-02-16 00:43:24,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:43:24,588 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 16 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:24,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 377 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-16 00:43:24,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2023-02-16 00:43:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 108 states have (on average 1.4351851851851851) internal successors, (155), 108 states have internal predecessors, (155), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 00:43:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 168 transitions. [2023-02-16 00:43:24,603 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 168 transitions. Word has length 46 [2023-02-16 00:43:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:24,604 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 168 transitions. [2023-02-16 00:43:24,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 168 transitions. [2023-02-16 00:43:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 00:43:24,610 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:24,610 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:24,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 00:43:24,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-16 00:43:24,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:24,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1192221684, now seen corresponding path program 1 times [2023-02-16 00:43:24,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:24,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521739063] [2023-02-16 00:43:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:24,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-16 00:43:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-16 00:43:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:24,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:24,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521739063] [2023-02-16 00:43:24,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521739063] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:43:24,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:43:24,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 00:43:24,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376809327] [2023-02-16 00:43:24,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:24,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 00:43:24,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:24,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 00:43:24,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 00:43:24,925 INFO L87 Difference]: Start difference. First operand 116 states and 168 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:24,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:24,950 INFO L93 Difference]: Finished difference Result 122 states and 173 transitions. [2023-02-16 00:43:24,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 00:43:24,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2023-02-16 00:43:24,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:24,952 INFO L225 Difference]: With dead ends: 122 [2023-02-16 00:43:24,952 INFO L226 Difference]: Without dead ends: 111 [2023-02-16 00:43:24,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 00:43:24,953 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 2 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:24,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 480 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:24,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-16 00:43:24,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-02-16 00:43:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 103 states have (on average 1.4174757281553398) internal successors, (146), 103 states have internal predecessors, (146), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 00:43:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2023-02-16 00:43:24,967 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 46 [2023-02-16 00:43:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:24,967 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2023-02-16 00:43:24,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:24,968 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2023-02-16 00:43:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-16 00:43:24,969 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:24,969 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:24,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-16 00:43:24,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:24,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:24,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1146571609, now seen corresponding path program 1 times [2023-02-16 00:43:24,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:24,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144314259] [2023-02-16 00:43:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:24,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-16 00:43:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-16 00:43:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:25,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:25,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144314259] [2023-02-16 00:43:25,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144314259] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:25,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453459759] [2023-02-16 00:43:25,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:25,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:25,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:25,040 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) [2023-02-16 00:43:25,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:43:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 00:43:25,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:25,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-16 00:43:25,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453459759] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:43:25,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:43:25,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 13 [2023-02-16 00:43:25,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461691226] [2023-02-16 00:43:25,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:43:25,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 00:43:25,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 00:43:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-02-16 00:43:25,246 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2023-02-16 00:43:25,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:25,584 INFO L93 Difference]: Finished difference Result 426 states and 644 transitions. [2023-02-16 00:43:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-16 00:43:25,585 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 48 [2023-02-16 00:43:25,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:25,589 INFO L225 Difference]: With dead ends: 426 [2023-02-16 00:43:25,591 INFO L226 Difference]: Without dead ends: 311 [2023-02-16 00:43:25,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2023-02-16 00:43:25,594 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 314 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:25,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 699 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:43:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-02-16 00:43:25,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 140. [2023-02-16 00:43:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 126 states have (on average 1.4047619047619047) internal successors, (177), 127 states have internal predecessors, (177), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2023-02-16 00:43:25,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 208 transitions. [2023-02-16 00:43:25,625 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 208 transitions. Word has length 48 [2023-02-16 00:43:25,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:25,626 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 208 transitions. [2023-02-16 00:43:25,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2023-02-16 00:43:25,626 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 208 transitions. [2023-02-16 00:43:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-16 00:43:25,627 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:25,627 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:25,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 00:43:25,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:25,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:25,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:25,834 INFO L85 PathProgramCache]: Analyzing trace with hash -348261834, now seen corresponding path program 1 times [2023-02-16 00:43:25,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:25,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926380357] [2023-02-16 00:43:25,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:25,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 00:43:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-16 00:43:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-16 00:43:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-16 00:43:25,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:25,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926380357] [2023-02-16 00:43:25,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926380357] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:25,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804796236] [2023-02-16 00:43:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:25,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:25,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:25,901 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) [2023-02-16 00:43:25,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 00:43:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:25,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 00:43:25,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-16 00:43:25,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:43:25,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804796236] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:43:25,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:43:25,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-02-16 00:43:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536424467] [2023-02-16 00:43:25,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:25,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:43:25,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:25,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:43:25,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 00:43:25,979 INFO L87 Difference]: Start difference. First operand 140 states and 208 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:43:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:26,013 INFO L93 Difference]: Finished difference Result 277 states and 411 transitions. [2023-02-16 00:43:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:43:26,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2023-02-16 00:43:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:26,014 INFO L225 Difference]: With dead ends: 277 [2023-02-16 00:43:26,014 INFO L226 Difference]: Without dead ends: 155 [2023-02-16 00:43:26,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-16 00:43:26,015 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 20 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:26,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 247 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-16 00:43:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 146. [2023-02-16 00:43:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 131 states have (on average 1.4045801526717556) internal successors, (184), 133 states have internal predecessors, (184), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2023-02-16 00:43:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2023-02-16 00:43:26,024 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 55 [2023-02-16 00:43:26,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:26,024 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2023-02-16 00:43:26,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:43:26,024 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2023-02-16 00:43:26,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-02-16 00:43:26,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:26,025 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:26,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-16 00:43:26,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:26,231 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:26,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1206174656, now seen corresponding path program 1 times [2023-02-16 00:43:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:26,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317901858] [2023-02-16 00:43:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:26,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 00:43:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-16 00:43:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:26,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:26,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317901858] [2023-02-16 00:43:26,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317901858] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:26,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065708434] [2023-02-16 00:43:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:26,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:26,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:26,305 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) [2023-02-16 00:43:26,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 00:43:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 00:43:26,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 00:43:26,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:43:26,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065708434] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:43:26,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:43:26,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-02-16 00:43:26,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714169265] [2023-02-16 00:43:26,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:26,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:43:26,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:26,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:43:26,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 00:43:26,390 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:43:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:26,433 INFO L93 Difference]: Finished difference Result 303 states and 458 transitions. [2023-02-16 00:43:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:43:26,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2023-02-16 00:43:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:26,436 INFO L225 Difference]: With dead ends: 303 [2023-02-16 00:43:26,437 INFO L226 Difference]: Without dead ends: 166 [2023-02-16 00:43:26,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-16 00:43:26,438 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 20 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:26,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 252 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:26,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-02-16 00:43:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 163. [2023-02-16 00:43:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 146 states have (on average 1.3972602739726028) internal successors, (204), 150 states have internal predecessors, (204), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-02-16 00:43:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 244 transitions. [2023-02-16 00:43:26,453 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 244 transitions. Word has length 58 [2023-02-16 00:43:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:26,453 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 244 transitions. [2023-02-16 00:43:26,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:43:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 244 transitions. [2023-02-16 00:43:26,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-16 00:43:26,455 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:26,455 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:26,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 00:43:26,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:26,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:26,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:26,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1532583322, now seen corresponding path program 1 times [2023-02-16 00:43:26,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:26,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920218354] [2023-02-16 00:43:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:26,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-16 00:43:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-16 00:43:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:26,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:26,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920218354] [2023-02-16 00:43:26,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920218354] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:26,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436627131] [2023-02-16 00:43:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:26,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:26,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:26,737 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) [2023-02-16 00:43:26,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 00:43:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:26,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 00:43:26,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 00:43:26,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:26,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436627131] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:43:26,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:43:26,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-02-16 00:43:26,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61756602] [2023-02-16 00:43:26,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:43:26,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 00:43:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:26,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 00:43:26,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-16 00:43:26,876 INFO L87 Difference]: Start difference. First operand 163 states and 244 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-16 00:43:26,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:26,992 INFO L93 Difference]: Finished difference Result 419 states and 656 transitions. [2023-02-16 00:43:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 00:43:26,993 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2023-02-16 00:43:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:26,994 INFO L225 Difference]: With dead ends: 419 [2023-02-16 00:43:26,994 INFO L226 Difference]: Without dead ends: 265 [2023-02-16 00:43:26,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2023-02-16 00:43:26,995 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 155 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:26,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 401 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:43:26,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-02-16 00:43:27,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 191. [2023-02-16 00:43:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 174 states have (on average 1.4252873563218391) internal successors, (248), 178 states have internal predecessors, (248), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-02-16 00:43:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 288 transitions. [2023-02-16 00:43:27,008 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 288 transitions. Word has length 61 [2023-02-16 00:43:27,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:27,009 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 288 transitions. [2023-02-16 00:43:27,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-16 00:43:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 288 transitions. [2023-02-16 00:43:27,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-16 00:43:27,010 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:27,010 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:27,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-16 00:43:27,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:27,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash -973321366, now seen corresponding path program 1 times [2023-02-16 00:43:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:27,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256518694] [2023-02-16 00:43:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:27,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 00:43:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-16 00:43:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:27,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:27,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256518694] [2023-02-16 00:43:27,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256518694] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:27,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379486079] [2023-02-16 00:43:27,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:27,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:27,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:27,313 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) [2023-02-16 00:43:27,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 00:43:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:43:27,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:27,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:27,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379486079] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:27,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:43:27,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-02-16 00:43:27,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107914376] [2023-02-16 00:43:27,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:27,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:43:27,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:43:27,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:43:27,425 INFO L87 Difference]: Start difference. First operand 191 states and 288 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:27,440 INFO L93 Difference]: Finished difference Result 247 states and 363 transitions. [2023-02-16 00:43:27,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:43:27,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2023-02-16 00:43:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:27,442 INFO L225 Difference]: With dead ends: 247 [2023-02-16 00:43:27,442 INFO L226 Difference]: Without dead ends: 196 [2023-02-16 00:43:27,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:43:27,443 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 41 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:27,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 147 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-02-16 00:43:27,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 191. [2023-02-16 00:43:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 174 states have (on average 1.4137931034482758) internal successors, (246), 178 states have internal predecessors, (246), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-02-16 00:43:27,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 286 transitions. [2023-02-16 00:43:27,456 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 286 transitions. Word has length 63 [2023-02-16 00:43:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:27,456 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 286 transitions. [2023-02-16 00:43:27,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 286 transitions. [2023-02-16 00:43:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-16 00:43:27,457 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:27,457 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:27,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 00:43:27,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:27,663 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash 16165131, now seen corresponding path program 1 times [2023-02-16 00:43:27,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:27,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552477849] [2023-02-16 00:43:27,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:27,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-16 00:43:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-16 00:43:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-02-16 00:43:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-16 00:43:27,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552477849] [2023-02-16 00:43:27,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552477849] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872983490] [2023-02-16 00:43:27,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:27,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:27,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:27,857 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) [2023-02-16 00:43:27,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 00:43:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:27,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-16 00:43:27,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-16 00:43:28,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-02-16 00:43:28,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872983490] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:43:28,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:43:28,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 12] total 26 [2023-02-16 00:43:28,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606018959] [2023-02-16 00:43:28,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:43:28,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 00:43:28,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 00:43:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2023-02-16 00:43:28,260 INFO L87 Difference]: Start difference. First operand 191 states and 286 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 22 states have internal predecessors, (81), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-02-16 00:43:29,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:29,100 INFO L93 Difference]: Finished difference Result 341 states and 501 transitions. [2023-02-16 00:43:29,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-16 00:43:29,100 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 22 states have internal predecessors, (81), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 63 [2023-02-16 00:43:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:29,101 INFO L225 Difference]: With dead ends: 341 [2023-02-16 00:43:29,101 INFO L226 Difference]: Without dead ends: 148 [2023-02-16 00:43:29,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=267, Invalid=1713, Unknown=0, NotChecked=0, Total=1980 [2023-02-16 00:43:29,103 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 165 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:29,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1109 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 00:43:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-02-16 00:43:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 104. [2023-02-16 00:43:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 95 states have internal predecessors, (133), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-16 00:43:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2023-02-16 00:43:29,113 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 147 transitions. Word has length 63 [2023-02-16 00:43:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:29,113 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 147 transitions. [2023-02-16 00:43:29,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 22 states have internal predecessors, (81), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-02-16 00:43:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 147 transitions. [2023-02-16 00:43:29,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-16 00:43:29,117 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:29,117 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:29,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 00:43:29,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 00:43:29,323 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash -848130451, now seen corresponding path program 1 times [2023-02-16 00:43:29,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:29,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513561623] [2023-02-16 00:43:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:29,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:29,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 00:43:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-16 00:43:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-16 00:43:29,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:29,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513561623] [2023-02-16 00:43:29,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513561623] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:29,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599874557] [2023-02-16 00:43:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:29,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:29,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:29,445 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) [2023-02-16 00:43:29,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 00:43:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:29,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 00:43:29,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-16 00:43:29,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-16 00:43:29,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599874557] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:43:29,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:43:29,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-02-16 00:43:29,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526379217] [2023-02-16 00:43:29,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:43:29,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 00:43:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 00:43:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-02-16 00:43:29,685 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 17 states have internal predecessors, (81), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 00:43:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:29,773 INFO L93 Difference]: Finished difference Result 214 states and 301 transitions. [2023-02-16 00:43:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:43:29,774 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 17 states have internal predecessors, (81), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) Word has length 64 [2023-02-16 00:43:29,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:29,775 INFO L225 Difference]: With dead ends: 214 [2023-02-16 00:43:29,775 INFO L226 Difference]: Without dead ends: 178 [2023-02-16 00:43:29,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-02-16 00:43:29,775 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 173 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:29,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1128 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-16 00:43:29,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 120. [2023-02-16 00:43:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 109 states have internal predecessors, (146), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2023-02-16 00:43:29,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 171 transitions. [2023-02-16 00:43:29,786 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 171 transitions. Word has length 64 [2023-02-16 00:43:29,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:29,786 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 171 transitions. [2023-02-16 00:43:29,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 17 states have internal predecessors, (81), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 00:43:29,787 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 171 transitions. [2023-02-16 00:43:29,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-16 00:43:29,787 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:29,788 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:29,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-16 00:43:29,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:29,993 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:29,993 INFO L85 PathProgramCache]: Analyzing trace with hash -629275733, now seen corresponding path program 1 times [2023-02-16 00:43:29,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:29,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100241738] [2023-02-16 00:43:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:29,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 00:43:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-16 00:43:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-16 00:43:30,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:30,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100241738] [2023-02-16 00:43:30,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100241738] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:43:30,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:43:30,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 00:43:30,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057717647] [2023-02-16 00:43:30,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:30,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 00:43:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:30,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 00:43:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 00:43:30,087 INFO L87 Difference]: Start difference. First operand 120 states and 171 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:30,133 INFO L93 Difference]: Finished difference Result 171 states and 235 transitions. [2023-02-16 00:43:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 00:43:30,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2023-02-16 00:43:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:30,134 INFO L225 Difference]: With dead ends: 171 [2023-02-16 00:43:30,134 INFO L226 Difference]: Without dead ends: 120 [2023-02-16 00:43:30,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:43:30,135 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 4 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:30,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 524 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-16 00:43:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-02-16 00:43:30,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 109 states have internal predecessors, (146), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-02-16 00:43:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 165 transitions. [2023-02-16 00:43:30,142 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 165 transitions. Word has length 64 [2023-02-16 00:43:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:30,142 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 165 transitions. [2023-02-16 00:43:30,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:30,142 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 165 transitions. [2023-02-16 00:43:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-16 00:43:30,143 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:30,143 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:30,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-16 00:43:30,144 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:30,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1085833987, now seen corresponding path program 1 times [2023-02-16 00:43:30,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:30,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491281144] [2023-02-16 00:43:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:30,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 00:43:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-16 00:43:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-16 00:43:30,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:30,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491281144] [2023-02-16 00:43:30,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491281144] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:43:30,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:43:30,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 00:43:30,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983039067] [2023-02-16 00:43:30,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:30,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 00:43:30,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 00:43:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-16 00:43:30,284 INFO L87 Difference]: Start difference. First operand 120 states and 165 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:30,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:30,355 INFO L93 Difference]: Finished difference Result 233 states and 318 transitions. [2023-02-16 00:43:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 00:43:30,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 71 [2023-02-16 00:43:30,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:30,356 INFO L225 Difference]: With dead ends: 233 [2023-02-16 00:43:30,356 INFO L226 Difference]: Without dead ends: 206 [2023-02-16 00:43:30,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-16 00:43:30,357 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 126 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:30,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 629 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-02-16 00:43:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 151. [2023-02-16 00:43:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.3161764705882353) internal successors, (179), 138 states have internal predecessors, (179), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (20), 8 states have call predecessors, (20), 5 states have call successors, (20) [2023-02-16 00:43:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 205 transitions. [2023-02-16 00:43:30,366 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 205 transitions. Word has length 71 [2023-02-16 00:43:30,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:30,366 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 205 transitions. [2023-02-16 00:43:30,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 205 transitions. [2023-02-16 00:43:30,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-16 00:43:30,367 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:30,367 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:30,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-16 00:43:30,367 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:30,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:30,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1929269631, now seen corresponding path program 1 times [2023-02-16 00:43:30,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:30,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958553865] [2023-02-16 00:43:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:30,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 00:43:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-16 00:43:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 00:43:30,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:30,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958553865] [2023-02-16 00:43:30,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958553865] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:30,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197307781] [2023-02-16 00:43:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:30,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:30,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:30,461 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) [2023-02-16 00:43:30,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 00:43:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 00:43:30,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-02-16 00:43:30,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-02-16 00:43:30,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197307781] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:30,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:43:30,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 11 [2023-02-16 00:43:30,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863074475] [2023-02-16 00:43:30,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:30,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:43:30,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:30,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:43:30,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-02-16 00:43:30,616 INFO L87 Difference]: Start difference. First operand 151 states and 205 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:30,645 INFO L93 Difference]: Finished difference Result 191 states and 256 transitions. [2023-02-16 00:43:30,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:43:30,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 71 [2023-02-16 00:43:30,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:30,646 INFO L225 Difference]: With dead ends: 191 [2023-02-16 00:43:30,646 INFO L226 Difference]: Without dead ends: 131 [2023-02-16 00:43:30,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-02-16 00:43:30,647 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 84 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:30,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 138 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:43:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-16 00:43:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2023-02-16 00:43:30,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 120 states have internal predecessors, (154), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-02-16 00:43:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2023-02-16 00:43:30,657 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 71 [2023-02-16 00:43:30,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:30,658 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2023-02-16 00:43:30,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2023-02-16 00:43:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-16 00:43:30,659 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:30,659 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:30,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-16 00:43:30,864 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,SelfDestructingSolverStorable14 [2023-02-16 00:43:30,864 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:30,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:30,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1245795635, now seen corresponding path program 1 times [2023-02-16 00:43:30,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:30,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656399844] [2023-02-16 00:43:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 00:43:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-16 00:43:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-16 00:43:30,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:30,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656399844] [2023-02-16 00:43:30,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656399844] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:43:30,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:43:30,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-16 00:43:30,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295246663] [2023-02-16 00:43:30,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:43:30,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:43:30,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:30,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:43:30,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:43:30,993 INFO L87 Difference]: Start difference. First operand 130 states and 172 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:31,107 INFO L93 Difference]: Finished difference Result 322 states and 434 transitions. [2023-02-16 00:43:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 00:43:31,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2023-02-16 00:43:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:31,109 INFO L225 Difference]: With dead ends: 322 [2023-02-16 00:43:31,109 INFO L226 Difference]: Without dead ends: 289 [2023-02-16 00:43:31,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:43:31,109 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 273 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:31,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 957 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:43:31,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-02-16 00:43:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 133. [2023-02-16 00:43:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 120 states have (on average 1.3083333333333333) internal successors, (157), 123 states have internal predecessors, (157), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-02-16 00:43:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 175 transitions. [2023-02-16 00:43:31,120 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 175 transitions. Word has length 76 [2023-02-16 00:43:31,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:31,120 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 175 transitions. [2023-02-16 00:43:31,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 00:43:31,121 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 175 transitions. [2023-02-16 00:43:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-16 00:43:31,121 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:31,121 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:31,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-16 00:43:31,121 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 428147185, now seen corresponding path program 1 times [2023-02-16 00:43:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:31,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274334508] [2023-02-16 00:43:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 00:43:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-16 00:43:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:31,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:31,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274334508] [2023-02-16 00:43:31,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274334508] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:31,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903613313] [2023-02-16 00:43:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:31,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:31,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:31,224 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) [2023-02-16 00:43:31,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 00:43:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 00:43:31,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:31,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:31,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903613313] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:43:31,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:43:31,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-02-16 00:43:31,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847553597] [2023-02-16 00:43:31,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:43:31,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 00:43:31,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:31,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 00:43:31,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:43:31,434 INFO L87 Difference]: Start difference. First operand 133 states and 175 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 00:43:31,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:31,534 INFO L93 Difference]: Finished difference Result 262 states and 347 transitions. [2023-02-16 00:43:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 00:43:31,535 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 76 [2023-02-16 00:43:31,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:31,536 INFO L225 Difference]: With dead ends: 262 [2023-02-16 00:43:31,536 INFO L226 Difference]: Without dead ends: 223 [2023-02-16 00:43:31,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-02-16 00:43:31,536 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 289 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:31,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1215 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:43:31,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-02-16 00:43:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 150. [2023-02-16 00:43:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 136 states have (on average 1.286764705882353) internal successors, (175), 137 states have internal predecessors, (175), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (17), 8 states have call predecessors, (17), 5 states have call successors, (17) [2023-02-16 00:43:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 198 transitions. [2023-02-16 00:43:31,546 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 198 transitions. Word has length 76 [2023-02-16 00:43:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:31,546 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 198 transitions. [2023-02-16 00:43:31,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 00:43:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 198 transitions. [2023-02-16 00:43:31,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-16 00:43:31,547 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:31,547 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:31,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 00:43:31,752 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,SelfDestructingSolverStorable16 [2023-02-16 00:43:31,753 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:31,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:31,753 INFO L85 PathProgramCache]: Analyzing trace with hash -851716493, now seen corresponding path program 1 times [2023-02-16 00:43:31,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:31,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714512973] [2023-02-16 00:43:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:31,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 00:43:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-16 00:43:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-16 00:43:31,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:31,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714512973] [2023-02-16 00:43:31,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714512973] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:31,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929023984] [2023-02-16 00:43:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:31,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:31,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:31,853 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) [2023-02-16 00:43:31,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 00:43:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:31,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-16 00:43:31,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:31,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:32,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929023984] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:43:32,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:43:32,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 12] total 21 [2023-02-16 00:43:32,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556453888] [2023-02-16 00:43:32,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:43:32,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-16 00:43:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:32,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-16 00:43:32,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-02-16 00:43:32,183 INFO L87 Difference]: Start difference. First operand 150 states and 198 transitions. Second operand has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 19 states have internal predecessors, (100), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-16 00:43:32,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:32,560 INFO L93 Difference]: Finished difference Result 351 states and 468 transitions. [2023-02-16 00:43:32,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-16 00:43:32,561 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 19 states have internal predecessors, (100), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 76 [2023-02-16 00:43:32,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:32,562 INFO L225 Difference]: With dead ends: 351 [2023-02-16 00:43:32,562 INFO L226 Difference]: Without dead ends: 210 [2023-02-16 00:43:32,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-02-16 00:43:32,563 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 235 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:32,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 861 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 00:43:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-02-16 00:43:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 150. [2023-02-16 00:43:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 136 states have (on average 1.2720588235294117) internal successors, (173), 137 states have internal predecessors, (173), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (17), 8 states have call predecessors, (17), 5 states have call successors, (17) [2023-02-16 00:43:32,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 196 transitions. [2023-02-16 00:43:32,573 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 196 transitions. Word has length 76 [2023-02-16 00:43:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:32,574 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 196 transitions. [2023-02-16 00:43:32,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 19 states have internal predecessors, (100), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-16 00:43:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 196 transitions. [2023-02-16 00:43:32,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-16 00:43:32,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:43:32,575 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:32,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 00:43:32,781 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,SelfDestructingSolverStorable17 [2023-02-16 00:43:32,781 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:43:32,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:43:32,781 INFO L85 PathProgramCache]: Analyzing trace with hash -141123505, now seen corresponding path program 1 times [2023-02-16 00:43:32,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:43:32,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796084277] [2023-02-16 00:43:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:32,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:43:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:43:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:43:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-16 00:43:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:32,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-02-16 00:43:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-16 00:43:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:43:32,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796084277] [2023-02-16 00:43:32,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796084277] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:43:32,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832616749] [2023-02-16 00:43:32,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:43:32,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:32,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:43:32,894 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) [2023-02-16 00:43:32,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 00:43:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:43:32,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-16 00:43:32,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:43:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:43:33,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:43:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-02-16 00:43:33,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832616749] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:43:33,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:43:33,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 18 [2023-02-16 00:43:33,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042706045] [2023-02-16 00:43:33,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:43:33,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 00:43:33,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:43:33,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 00:43:33,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-02-16 00:43:33,183 INFO L87 Difference]: Start difference. First operand 150 states and 196 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2023-02-16 00:43:33,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:43:33,619 INFO L93 Difference]: Finished difference Result 266 states and 354 transitions. [2023-02-16 00:43:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 00:43:33,620 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 79 [2023-02-16 00:43:33,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:43:33,620 INFO L225 Difference]: With dead ends: 266 [2023-02-16 00:43:33,620 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 00:43:33,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2023-02-16 00:43:33,621 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 177 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:43:33,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 211 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:43:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 00:43:33,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 00:43:33,622 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) [2023-02-16 00:43:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 00:43:33,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2023-02-16 00:43:33,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:43:33,622 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 00:43:33,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2023-02-16 00:43:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 00:43:33,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 00:43:33,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 00:43:33,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 00:43:33,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:43:33,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 00:43:34,975 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-02-16 00:43:34,975 INFO L899 garLoopResultBuilder]: For program point L77-2(line 77) no Hoare annotation was computed. [2023-02-16 00:43:34,975 INFO L899 garLoopResultBuilder]: For program point L77-4(line 77) no Hoare annotation was computed. [2023-02-16 00:43:34,975 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: (let ((.cse0 (not (= |base2flt_#in~m| 0)))) (and (<= |base2flt_#in~e| base2flt_~e) (or (< (mod base2flt_~__retres4~0 4294967296) 1) .cse0) (or (not (= 0 |base2flt_#in~e|)) (not (= |base2flt_#in~m| |base2flt_#in~e|))) (or (< (mod |base2flt_#res| 4294967296) 1) .cse0) (not (= 1 |base2flt_#in~m|)))) [2023-02-16 00:43:34,976 INFO L895 garLoopResultBuilder]: At program point $Ultimate##27(line 76) the Hoare annotation is: (let ((.cse3 (not (= |base2flt_#in~m| 0)))) (let ((.cse0 (or (< (mod base2flt_~__retres4~0 4294967296) 1) .cse3)) (.cse1 (or (not (= 0 |base2flt_#in~e|)) (not (= |base2flt_#in~m| |base2flt_#in~e|)))) (.cse2 (or (< (mod |base2flt_#res| 4294967296) 1) .cse3))) (or (and .cse0 .cse1 .cse2 (<= base2flt_~e |base2flt_#in~e|)) (and .cse0 .cse1 .cse2 (not (= 1 |base2flt_#in~m|)))))) [2023-02-16 00:43:34,976 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2023-02-16 00:43:34,976 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2023-02-16 00:43:34,976 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (let ((.cse0 (<= base2flt_~e |base2flt_#in~e|)) (.cse1 (or (not (= 0 |base2flt_#in~e|)) (not (= |base2flt_#in~m| |base2flt_#in~e|)))) (.cse2 (or (< (mod |base2flt_#res| 4294967296) 1) (not (= |base2flt_#in~m| 0))))) (or (and (<= |base2flt_#in~e| base2flt_~e) (= base2flt_~__retres4~0 0) .cse0 (= base2flt_~m |base2flt_#in~m|)) (and .cse1 .cse2 .cse0) (and .cse1 .cse2 (not (= 1 |base2flt_#in~m|))))) [2023-02-16 00:43:34,976 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 82) the Hoare annotation is: true [2023-02-16 00:43:34,976 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2023-02-16 00:43:34,976 INFO L899 garLoopResultBuilder]: For program point base2fltFINAL(lines 24 82) no Hoare annotation was computed. [2023-02-16 00:43:34,976 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2023-02-16 00:43:34,977 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2023-02-16 00:43:34,977 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2023-02-16 00:43:34,977 INFO L895 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: (let ((.cse0 (not (= |base2flt_#in~m| 0)))) (and (or (< (mod base2flt_~__retres4~0 4294967296) 1) .cse0) (or (not (= 0 |base2flt_#in~e|)) (not (= |base2flt_#in~m| |base2flt_#in~e|))) (or (< (mod |base2flt_#res| 4294967296) 1) .cse0) (<= base2flt_~e |base2flt_#in~e|))) [2023-02-16 00:43:34,977 INFO L899 garLoopResultBuilder]: For program point L76-1(line 76) no Hoare annotation was computed. [2023-02-16 00:43:34,977 INFO L899 garLoopResultBuilder]: For program point L76-3(line 76) no Hoare annotation was computed. [2023-02-16 00:43:34,977 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2023-02-16 00:43:34,977 INFO L899 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2023-02-16 00:43:34,977 INFO L899 garLoopResultBuilder]: For program point L176-2(line 176) no Hoare annotation was computed. [2023-02-16 00:43:34,977 INFO L899 garLoopResultBuilder]: For program point L176-4(line 176) no Hoare annotation was computed. [2023-02-16 00:43:34,978 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 220 276) the Hoare annotation is: true [2023-02-16 00:43:34,978 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 00:43:34,978 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2023-02-16 00:43:34,978 INFO L899 garLoopResultBuilder]: For program point L243(lines 243 252) no Hoare annotation was computed. [2023-02-16 00:43:34,978 INFO L899 garLoopResultBuilder]: For program point L243-2(lines 243 252) no Hoare annotation was computed. [2023-02-16 00:43:34,978 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 264) no Hoare annotation was computed. [2023-02-16 00:43:34,978 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2023-02-16 00:43:34,978 INFO L899 garLoopResultBuilder]: For program point L260-2(lines 260 264) no Hoare annotation was computed. [2023-02-16 00:43:34,978 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2023-02-16 00:43:34,979 INFO L895 garLoopResultBuilder]: At program point mulflt_returnLabel#1(lines 147 219) the Hoare annotation is: (or (<= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (and (= 1 |ULTIMATE.start_main_~sb~0#1|) (= 1 |ULTIMATE.start_main_~tmp~2#1|)) (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 1) (< (mod |ULTIMATE.start_mulflt_#res#1| 4294967296) 1) (< (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) 1))) [2023-02-16 00:43:34,979 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2023-02-16 00:43:34,979 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 00:43:34,979 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2023-02-16 00:43:34,979 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2023-02-16 00:43:34,979 INFO L899 garLoopResultBuilder]: For program point L171(line 171) no Hoare annotation was computed. [2023-02-16 00:43:34,979 INFO L899 garLoopResultBuilder]: For program point L171-2(line 171) no Hoare annotation was computed. [2023-02-16 00:43:34,979 INFO L899 garLoopResultBuilder]: For program point L171-4(line 171) no Hoare annotation was computed. [2023-02-16 00:43:34,979 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 250) no Hoare annotation was computed. [2023-02-16 00:43:34,979 INFO L899 garLoopResultBuilder]: For program point L213(line 213) no Hoare annotation was computed. [2023-02-16 00:43:34,980 INFO L899 garLoopResultBuilder]: For program point L246-2(lines 246 250) no Hoare annotation was computed. [2023-02-16 00:43:34,980 INFO L899 garLoopResultBuilder]: For program point L213-2(line 213) no Hoare annotation was computed. [2023-02-16 00:43:34,980 INFO L899 garLoopResultBuilder]: For program point L213-4(line 213) no Hoare annotation was computed. [2023-02-16 00:43:34,980 INFO L902 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: true [2023-02-16 00:43:34,980 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2023-02-16 00:43:34,980 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 00:43:34,980 INFO L899 garLoopResultBuilder]: For program point L214(line 214) no Hoare annotation was computed. [2023-02-16 00:43:34,980 INFO L899 garLoopResultBuilder]: For program point L214-2(line 214) no Hoare annotation was computed. [2023-02-16 00:43:34,980 INFO L899 garLoopResultBuilder]: For program point L214-4(line 214) no Hoare annotation was computed. [2023-02-16 00:43:34,980 INFO L895 garLoopResultBuilder]: At program point L239(line 239) the Hoare annotation is: (= |ULTIMATE.start_main_~zero~0#1| 0) [2023-02-16 00:43:34,981 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2023-02-16 00:43:34,981 INFO L899 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2023-02-16 00:43:34,981 INFO L899 garLoopResultBuilder]: For program point L173-2(line 173) no Hoare annotation was computed. [2023-02-16 00:43:34,981 INFO L899 garLoopResultBuilder]: For program point L173-4(line 173) no Hoare annotation was computed. [2023-02-16 00:43:34,981 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 00:43:34,981 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2023-02-16 00:43:34,981 INFO L899 garLoopResultBuilder]: For program point L256-1(lines 256 272) no Hoare annotation was computed. [2023-02-16 00:43:34,981 INFO L895 garLoopResultBuilder]: At program point L240(line 240) the Hoare annotation is: (= |ULTIMATE.start_main_~zero~0#1| 0) [2023-02-16 00:43:34,981 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2023-02-16 00:43:34,981 INFO L899 garLoopResultBuilder]: For program point L174(line 174) no Hoare annotation was computed. [2023-02-16 00:43:34,982 INFO L899 garLoopResultBuilder]: For program point L174-2(line 174) no Hoare annotation was computed. [2023-02-16 00:43:34,982 INFO L899 garLoopResultBuilder]: For program point L174-4(line 174) no Hoare annotation was computed. [2023-02-16 00:43:34,982 INFO L899 garLoopResultBuilder]: For program point L257(lines 257 266) no Hoare annotation was computed. [2023-02-16 00:43:34,982 INFO L895 garLoopResultBuilder]: At program point L257-2(lines 257 266) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp___0~0#1| 0) (= 0 |ULTIMATE.start_main_~tmp___1~0#1|)) [2023-02-16 00:43:34,982 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 164) no Hoare annotation was computed. [2023-02-16 00:43:34,982 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2023-02-16 00:43:34,982 INFO L895 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (or (<= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (and (= 1 |ULTIMATE.start_main_~sb~0#1|) (= 1 |ULTIMATE.start_main_~tmp~2#1|)) (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 1) (< (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) 1))) [2023-02-16 00:43:34,982 INFO L895 garLoopResultBuilder]: At program point L241(line 241) the Hoare annotation is: (or (= |ULTIMATE.start_main_~zero~0#1| 0) (and (= |ULTIMATE.start_main_~a~0#1| 0) (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 1))) [2023-02-16 00:43:34,982 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2023-02-16 00:43:34,983 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-02-16 00:43:34,997 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2023-02-16 00:43:34,997 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2023-02-16 00:43:34,997 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2023-02-16 00:43:34,997 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 20) the Hoare annotation is: true [2023-02-16 00:43:34,997 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-16 00:43:35,000 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:43:35,001 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 00:43:35,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 12:43:35 BoogieIcfgContainer [2023-02-16 00:43:35,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 00:43:35,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 00:43:35,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 00:43:35,017 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 00:43:35,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:43:22" (3/4) ... [2023-02-16 00:43:35,019 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 00:43:35,023 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2023-02-16 00:43:35,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-16 00:43:35,027 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-02-16 00:43:35,028 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-02-16 00:43:35,028 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-02-16 00:43:35,028 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 00:43:35,043 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\old(e) <= e && __retres4 == 0) && e <= \old(e)) && m == \old(m)) || (((!(0 == \old(e)) || !(\old(m) == \old(e))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && e <= \old(e))) || (((!(0 == \old(e)) || !(\old(m) == \old(e))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && !(1 == \old(m))) [2023-02-16 00:43:35,044 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((__retres4 % 4294967296 < 1 || !(\old(m) == 0)) && (!(0 == \old(e)) || !(\old(m) == \old(e)))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && e <= \old(e) [2023-02-16 00:43:35,044 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(e) <= e && (__retres4 % 4294967296 < 1 || !(\old(m) == 0))) && (!(0 == \old(e)) || !(\old(m) == \old(e)))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && !(1 == \old(m)) [2023-02-16 00:43:35,044 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((__retres4 % 4294967296 < 1 || !(\old(m) == 0)) && (!(0 == \old(e)) || !(\old(m) == \old(e)))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && e <= \old(e)) || ((((__retres4 % 4294967296 < 1 || !(\old(m) == 0)) && (!(0 == \old(e)) || !(\old(m) == \old(e)))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && !(1 == \old(m))) [2023-02-16 00:43:35,045 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (sb + 1 <= 0 || (1 == sb && 1 == tmp)) || ((zero % 4294967296 < 1 && \result % 4294967296 < 1) && __retres10 % 4294967296 < 1) [2023-02-16 00:43:35,068 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 00:43:35,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 00:43:35,073 INFO L158 Benchmark]: Toolchain (without parser) took 12971.75ms. Allocated memory was 100.7MB in the beginning and 268.4MB in the end (delta: 167.8MB). Free memory was 64.6MB in the beginning and 147.2MB in the end (delta: -82.7MB). Peak memory consumption was 87.2MB. Max. memory is 16.1GB. [2023-02-16 00:43:35,074 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 00:43:35,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.21ms. Allocated memory is still 100.7MB. Free memory was 64.3MB in the beginning and 51.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 00:43:35,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.02ms. Allocated memory is still 100.7MB. Free memory was 51.0MB in the beginning and 48.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 00:43:35,076 INFO L158 Benchmark]: Boogie Preprocessor took 22.30ms. Allocated memory is still 100.7MB. Free memory was 48.9MB in the beginning and 46.8MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-16 00:43:35,076 INFO L158 Benchmark]: RCFGBuilder took 576.14ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 46.8MB in the beginning and 84.4MB in the end (delta: -37.5MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2023-02-16 00:43:35,077 INFO L158 Benchmark]: TraceAbstraction took 12082.75ms. Allocated memory was 121.6MB in the beginning and 268.4MB in the end (delta: 146.8MB). Free memory was 84.0MB in the beginning and 152.5MB in the end (delta: -68.5MB). Peak memory consumption was 121.8MB. Max. memory is 16.1GB. [2023-02-16 00:43:35,077 INFO L158 Benchmark]: Witness Printer took 55.95ms. Allocated memory is still 268.4MB. Free memory was 152.5MB in the beginning and 147.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-16 00:43:35,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.21ms. Allocated memory is still 100.7MB. Free memory was 64.3MB in the beginning and 51.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.02ms. Allocated memory is still 100.7MB. Free memory was 51.0MB in the beginning and 48.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.30ms. Allocated memory is still 100.7MB. Free memory was 48.9MB in the beginning and 46.8MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 576.14ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 46.8MB in the beginning and 84.4MB in the end (delta: -37.5MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * TraceAbstraction took 12082.75ms. Allocated memory was 121.6MB in the beginning and 268.4MB in the end (delta: 146.8MB). Free memory was 84.0MB in the beginning and 152.5MB in the end (delta: -68.5MB). Peak memory consumption was 121.8MB. Max. memory is 16.1GB. * Witness Printer took 55.95ms. Allocated memory is still 268.4MB. Free memory was 152.5MB in the beginning and 147.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 17]: 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 3 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.0s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2333 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2328 mSDsluCounter, 10424 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8721 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2738 IncrementalHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 1703 mSDtfsCounter, 2738 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1819 GetRequests, 1557 SyntacticMatches, 2 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=9, InterpolantAutomatonStates: 178, 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, 19 MinimizatonAttempts, 714 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 217 PreInvPairs, 672 NumberOfFragments, 282 HoareAnnotationTreeSize, 217 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 103900 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1951 NumberOfCodeBlocks, 1951 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2599 ConstructedInterpolants, 0 QuantifiedInterpolants, 4961 SizeOfPredicates, 59 NumberOfNonLiveVariables, 2495 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 43 InterpolantComputations, 12 PerfectInterpolantSequences, 1167/1454 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: 76]: Loop Invariant Derived loop invariant: ((((__retres4 % 4294967296 < 1 || !(\old(m) == 0)) && (!(0 == \old(e)) || !(\old(m) == \old(e)))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && e <= \old(e)) || ((((__retres4 % 4294967296 < 1 || !(\old(m) == 0)) && (!(0 == \old(e)) || !(\old(m) == \old(e)))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && !(1 == \old(m))) - InvariantResult [Line: 220]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: (sb + 1 <= 0 || (1 == sb && 1 == tmp)) || (zero % 4294967296 < 1 && __retres10 % 4294967296 < 1) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((\old(e) <= e && __retres4 == 0) && e <= \old(e)) && m == \old(m)) || (((!(0 == \old(e)) || !(\old(m) == \old(e))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && e <= \old(e))) || (((!(0 == \old(e)) || !(\old(m) == \old(e))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && !(1 == \old(m))) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((__retres4 % 4294967296 < 1 || !(\old(m) == 0)) && (!(0 == \old(e)) || !(\old(m) == \old(e)))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && e <= \old(e) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((\old(e) <= e && (__retres4 % 4294967296 < 1 || !(\old(m) == 0))) && (!(0 == \old(e)) || !(\old(m) == \old(e)))) && (\result % 4294967296 < 1 || !(\old(m) == 0))) && !(1 == \old(m)) - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: (sb + 1 <= 0 || (1 == sb && 1 == tmp)) || ((zero % 4294967296 < 1 && \result % 4294967296 < 1) && __retres10 % 4294967296 < 1) RESULT: Ultimate proved your program to be correct! [2023-02-16 00:43:35,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE