./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/product-lines/elevator_spec13_product22.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 f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:52:11,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:52:11,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:52:11,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:52:11,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:52:11,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:52:11,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:52:11,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:52:11,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:52:11,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:52:11,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:52:11,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:52:11,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:52:11,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:52:11,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:52:11,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:52:11,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:52:11,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:52:11,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:52:11,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:52:11,169 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:52:11,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:52:11,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:52:11,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:52:11,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:52:11,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:52:11,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:52:11,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:52:11,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:52:11,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:52:11,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:52:11,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:52:11,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:52:11,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:52:11,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:52:11,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:52:11,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:52:11,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:52:11,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:52:11,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:52:11,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:52:11,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:52:11,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:52:11,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:52:11,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:52:11,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:52:11,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:52:11,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:52:11,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:52:11,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:52:11,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:52:11,205 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:52:11,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:52:11,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:52:11,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:52:11,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:52:11,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:52:11,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:52:11,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:52:11,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:52:11,211 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:52:11,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:52:11,212 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:52:11,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:52:11,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:52:11,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:52:11,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:52:11,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:52:11,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:52:11,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:52:11,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:52:11,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:52:11,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:52:11,214 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:52:11,214 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:52:11,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:52:11,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a [2022-07-22 16:52:11,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:52:11,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:52:11,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:52:11,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:52:11,432 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:52:11,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2022-07-22 16:52:11,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c232d54f/072d287f189946c1804fa39119a6ae2c/FLAG5ae0e269a [2022-07-22 16:52:11,875 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:52:11,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2022-07-22 16:52:11,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c232d54f/072d287f189946c1804fa39119a6ae2c/FLAG5ae0e269a [2022-07-22 16:52:12,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c232d54f/072d287f189946c1804fa39119a6ae2c [2022-07-22 16:52:12,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:52:12,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:52:12,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:52:12,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:52:12,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:52:12,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:12,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322a1c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12, skipping insertion in model container [2022-07-22 16:52:12,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:12,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:52:12,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:52:12,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2022-07-22 16:52:12,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:52:12,703 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:52:12,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2022-07-22 16:52:12,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:52:12,843 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:52:12,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12 WrapperNode [2022-07-22 16:52:12,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:52:12,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:52:12,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:52:12,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:52:12,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:12,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:12,955 INFO L137 Inliner]: procedures = 92, calls = 344, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 839 [2022-07-22 16:52:12,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:52:12,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:52:12,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:52:12,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:52:12,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:12,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:12,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:12,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:12,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:13,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:13,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:13,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:52:13,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:52:13,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:52:13,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:52:13,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (1/1) ... [2022-07-22 16:52:13,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:52:13,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:13,080 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) [2022-07-22 16:52:13,085 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 [2022-07-22 16:52:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-22 16:52:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-22 16:52:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:52:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-22 16:52:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-22 16:52:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-22 16:52:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-22 16:52:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-07-22 16:52:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-07-22 16:52:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 16:52:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 16:52:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 16:52:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 16:52:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-22 16:52:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-22 16:52:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 16:52:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 16:52:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 16:52:13,123 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 16:52:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 16:52:13,123 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 16:52:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-22 16:52:13,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-22 16:52:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 16:52:13,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 16:52:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 16:52:13,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 16:52:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 16:52:13,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 16:52:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 16:52:13,124 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 16:52:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 16:52:13,124 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 16:52:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 16:52:13,124 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 16:52:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 16:52:13,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 16:52:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 16:52:13,125 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 16:52:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:52:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-22 16:52:13,125 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-22 16:52:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 16:52:13,126 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 16:52:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 16:52:13,126 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 16:52:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 16:52:13,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 16:52:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-07-22 16:52:13,126 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-07-22 16:52:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-22 16:52:13,127 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-22 16:52:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:52:13,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:52:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 16:52:13,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 16:52:13,276 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:52:13,278 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:52:13,957 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:52:13,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:52:13,965 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 16:52:13,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:52:13 BoogieIcfgContainer [2022-07-22 16:52:13,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:52:13,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:52:13,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:52:13,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:52:13,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:52:12" (1/3) ... [2022-07-22 16:52:13,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636a7636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:52:13, skipping insertion in model container [2022-07-22 16:52:13,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:52:12" (2/3) ... [2022-07-22 16:52:13,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636a7636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:52:13, skipping insertion in model container [2022-07-22 16:52:13,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:52:13" (3/3) ... [2022-07-22 16:52:13,973 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2022-07-22 16:52:13,982 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:52:13,982 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:52:14,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:52:14,024 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40694d3c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ab31ac1 [2022-07-22 16:52:14,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:52:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 600 states, 470 states have (on average 1.6893617021276597) internal successors, (794), 490 states have internal predecessors, (794), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-07-22 16:52:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 16:52:14,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:14,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:14,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:14,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:14,053 INFO L85 PathProgramCache]: Analyzing trace with hash 758163300, now seen corresponding path program 1 times [2022-07-22 16:52:14,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:14,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644521712] [2022-07-22 16:52:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:14,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:52:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 16:52:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:52:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:52:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:52:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 16:52:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:52:14,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:14,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644521712] [2022-07-22 16:52:14,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644521712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:14,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354769855] [2022-07-22 16:52:14,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:14,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:14,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:14,515 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) [2022-07-22 16:52:14,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 16:52:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:14,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 16:52:14,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 16:52:14,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:14,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354769855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:14,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:14,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-07-22 16:52:14,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600143835] [2022-07-22 16:52:14,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:14,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 16:52:14,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:14,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 16:52:14,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:52:14,768 INFO L87 Difference]: Start difference. First operand has 600 states, 470 states have (on average 1.6893617021276597) internal successors, (794), 490 states have internal predecessors, (794), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 16:52:14,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:14,822 INFO L93 Difference]: Finished difference Result 1178 states and 1979 transitions. [2022-07-22 16:52:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 16:52:14,824 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-07-22 16:52:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:14,839 INFO L225 Difference]: With dead ends: 1178 [2022-07-22 16:52:14,839 INFO L226 Difference]: Without dead ends: 590 [2022-07-22 16:52:14,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:52:14,846 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:14,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:52:14,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-07-22 16:52:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2022-07-22 16:52:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.6717062634989202) internal successors, (774), 481 states have internal predecessors, (774), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-22 16:52:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 975 transitions. [2022-07-22 16:52:14,900 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 975 transitions. Word has length 83 [2022-07-22 16:52:14,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:14,901 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 975 transitions. [2022-07-22 16:52:14,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 16:52:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 975 transitions. [2022-07-22 16:52:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 16:52:14,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:14,906 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:14,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:15,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 16:52:15,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1565127940, now seen corresponding path program 1 times [2022-07-22 16:52:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:15,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779517258] [2022-07-22 16:52:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:52:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 16:52:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:52:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:52:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:52:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 16:52:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:52:15,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:15,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779517258] [2022-07-22 16:52:15,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779517258] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:15,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667472409] [2022-07-22 16:52:15,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:15,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:15,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:15,289 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) [2022-07-22 16:52:15,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 16:52:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:52:15,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 16:52:15,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:15,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667472409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:15,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:15,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:52:15,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765556131] [2022-07-22 16:52:15,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:15,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:52:15,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:15,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:52:15,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:52:15,514 INFO L87 Difference]: Start difference. First operand 590 states and 975 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 16:52:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:15,587 INFO L93 Difference]: Finished difference Result 1181 states and 1958 transitions. [2022-07-22 16:52:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:52:15,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-07-22 16:52:15,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:15,591 INFO L225 Difference]: With dead ends: 1181 [2022-07-22 16:52:15,591 INFO L226 Difference]: Without dead ends: 599 [2022-07-22 16:52:15,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:52:15,594 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 26 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:15,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2871 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:52:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-07-22 16:52:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-07-22 16:52:15,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 471 states have (on average 1.673036093418259) internal successors, (788), 489 states have internal predecessors, (788), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-22 16:52:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 989 transitions. [2022-07-22 16:52:15,620 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 989 transitions. Word has length 83 [2022-07-22 16:52:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:15,621 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 989 transitions. [2022-07-22 16:52:15,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 16:52:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 989 transitions. [2022-07-22 16:52:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 16:52:15,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:15,623 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:15,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 16:52:15,862 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,SelfDestructingSolverStorable1 [2022-07-22 16:52:15,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:15,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:15,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1064925813, now seen corresponding path program 1 times [2022-07-22 16:52:15,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:15,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585114306] [2022-07-22 16:52:15,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:15,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:15,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:52:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 16:52:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:52:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:52:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:52:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 16:52:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 16:52:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:52:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 16:52:16,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:16,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585114306] [2022-07-22 16:52:16,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585114306] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:16,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246827217] [2022-07-22 16:52:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:16,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:16,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:16,201 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) [2022-07-22 16:52:16,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 16:52:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:52:16,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:52:16,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:16,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246827217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:16,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:16,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-07-22 16:52:16,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045878437] [2022-07-22 16:52:16,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:16,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:52:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:52:16,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:52:16,446 INFO L87 Difference]: Start difference. First operand 599 states and 989 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 16:52:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:16,585 INFO L93 Difference]: Finished difference Result 1233 states and 2053 transitions. [2022-07-22 16:52:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:52:16,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2022-07-22 16:52:16,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:16,589 INFO L225 Difference]: With dead ends: 1233 [2022-07-22 16:52:16,589 INFO L226 Difference]: Without dead ends: 644 [2022-07-22 16:52:16,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:52:16,592 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 170 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:16,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 2715 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:16,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-07-22 16:52:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2022-07-22 16:52:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 515 states have (on average 1.6932038834951457) internal successors, (872), 533 states have internal predecessors, (872), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-22 16:52:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1073 transitions. [2022-07-22 16:52:16,609 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1073 transitions. Word has length 101 [2022-07-22 16:52:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:16,609 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 1073 transitions. [2022-07-22 16:52:16,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 16:52:16,610 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1073 transitions. [2022-07-22 16:52:16,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 16:52:16,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:16,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:16,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:16,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:16,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:16,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1102384449, now seen corresponding path program 1 times [2022-07-22 16:52:16,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:16,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784839480] [2022-07-22 16:52:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:16,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:52:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 16:52:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:16,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:52:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:52:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:52:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 16:52:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:52:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:52:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:52:17,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:17,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784839480] [2022-07-22 16:52:17,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784839480] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:17,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314593885] [2022-07-22 16:52:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:17,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:17,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:17,160 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) [2022-07-22 16:52:17,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 16:52:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:17,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:52:17,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:52:17,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:17,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314593885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:17,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:17,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-22 16:52:17,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855293272] [2022-07-22 16:52:17,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:17,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:52:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:17,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:52:17,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:52:17,504 INFO L87 Difference]: Start difference. First operand 644 states and 1073 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 16:52:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:17,629 INFO L93 Difference]: Finished difference Result 1311 states and 2186 transitions. [2022-07-22 16:52:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:52:17,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-07-22 16:52:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:17,633 INFO L225 Difference]: With dead ends: 1311 [2022-07-22 16:52:17,633 INFO L226 Difference]: Without dead ends: 677 [2022-07-22 16:52:17,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:52:17,639 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 118 mSDsluCounter, 4741 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 5712 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:17,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 5712 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-07-22 16:52:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 657. [2022-07-22 16:52:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.6895238095238094) internal successors, (887), 545 states have internal predecessors, (887), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2022-07-22 16:52:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1094 transitions. [2022-07-22 16:52:17,672 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1094 transitions. Word has length 103 [2022-07-22 16:52:17,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:17,673 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1094 transitions. [2022-07-22 16:52:17,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 16:52:17,674 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1094 transitions. [2022-07-22 16:52:17,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-22 16:52:17,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:17,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:17,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:17,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:17,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:17,896 INFO L85 PathProgramCache]: Analyzing trace with hash -260810925, now seen corresponding path program 1 times [2022-07-22 16:52:17,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:17,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028375887] [2022-07-22 16:52:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:17,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:52:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:52:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:52:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:52:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:52:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 16:52:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:52:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 16:52:18,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:18,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028375887] [2022-07-22 16:52:18,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028375887] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:18,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078931401] [2022-07-22 16:52:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:18,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:18,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:18,056 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) [2022-07-22 16:52:18,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 16:52:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:52:18,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 16:52:18,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:18,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078931401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:18,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:18,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-22 16:52:18,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920483750] [2022-07-22 16:52:18,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:18,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:52:18,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:18,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:52:18,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:52:18,367 INFO L87 Difference]: Start difference. First operand 657 states and 1094 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:18,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:18,473 INFO L93 Difference]: Finished difference Result 1331 states and 2217 transitions. [2022-07-22 16:52:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:52:18,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2022-07-22 16:52:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:18,477 INFO L225 Difference]: With dead ends: 1331 [2022-07-22 16:52:18,477 INFO L226 Difference]: Without dead ends: 686 [2022-07-22 16:52:18,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:52:18,479 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 129 mSDsluCounter, 4734 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5706 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:18,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5706 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:52:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-07-22 16:52:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 657. [2022-07-22 16:52:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.6895238095238094) internal successors, (887), 545 states have internal predecessors, (887), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2022-07-22 16:52:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1094 transitions. [2022-07-22 16:52:18,497 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1094 transitions. Word has length 88 [2022-07-22 16:52:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:18,497 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1094 transitions. [2022-07-22 16:52:18,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1094 transitions. [2022-07-22 16:52:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 16:52:18,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:18,499 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:18,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:18,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:18,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash 750962120, now seen corresponding path program 1 times [2022-07-22 16:52:18,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:18,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847506179] [2022-07-22 16:52:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 16:52:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:52:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:52:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:52:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:52:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:52:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 16:52:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 16:52:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 16:52:18,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:18,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847506179] [2022-07-22 16:52:18,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847506179] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:18,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959896778] [2022-07-22 16:52:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:18,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:18,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:18,974 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) [2022-07-22 16:52:19,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 16:52:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:52:19,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 16:52:19,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:19,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959896778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:19,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:19,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:52:19,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634091310] [2022-07-22 16:52:19,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:19,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:52:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:19,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:52:19,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:52:19,229 INFO L87 Difference]: Start difference. First operand 657 states and 1094 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 16:52:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:19,283 INFO L93 Difference]: Finished difference Result 1317 states and 2194 transitions. [2022-07-22 16:52:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:52:19,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2022-07-22 16:52:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:19,287 INFO L225 Difference]: With dead ends: 1317 [2022-07-22 16:52:19,287 INFO L226 Difference]: Without dead ends: 668 [2022-07-22 16:52:19,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:52:19,290 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 20 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:19,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2872 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:52:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-07-22 16:52:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 666. [2022-07-22 16:52:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 553 states have internal predecessors, (896), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-07-22 16:52:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1102 transitions. [2022-07-22 16:52:19,306 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1102 transitions. Word has length 104 [2022-07-22 16:52:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:19,306 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1102 transitions. [2022-07-22 16:52:19,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 16:52:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1102 transitions. [2022-07-22 16:52:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 16:52:19,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:19,308 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:19,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:19,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:19,544 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:19,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:19,544 INFO L85 PathProgramCache]: Analyzing trace with hash -198797179, now seen corresponding path program 1 times [2022-07-22 16:52:19,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:19,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132591300] [2022-07-22 16:52:19,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:19,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:52:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 16:52:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:52:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:52:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 16:52:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 16:52:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:52:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:52:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 16:52:19,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:19,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132591300] [2022-07-22 16:52:19,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132591300] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:19,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455852046] [2022-07-22 16:52:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:19,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:19,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:19,764 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) [2022-07-22 16:52:19,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 16:52:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:52:20,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:52:20,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:20,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455852046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:20,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:20,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-22 16:52:20,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573782193] [2022-07-22 16:52:20,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:20,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:52:20,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:52:20,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:52:20,100 INFO L87 Difference]: Start difference. First operand 666 states and 1102 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 16:52:20,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:20,186 INFO L93 Difference]: Finished difference Result 1340 states and 2220 transitions. [2022-07-22 16:52:20,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:52:20,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2022-07-22 16:52:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:20,192 INFO L225 Difference]: With dead ends: 1340 [2022-07-22 16:52:20,192 INFO L226 Difference]: Without dead ends: 697 [2022-07-22 16:52:20,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:52:20,195 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 140 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 5660 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:20,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 5660 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-07-22 16:52:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 666. [2022-07-22 16:52:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 553 states have internal predecessors, (896), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-07-22 16:52:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1102 transitions. [2022-07-22 16:52:20,210 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1102 transitions. Word has length 105 [2022-07-22 16:52:20,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:20,210 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1102 transitions. [2022-07-22 16:52:20,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 16:52:20,211 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1102 transitions. [2022-07-22 16:52:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 16:52:20,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:20,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:20,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-22 16:52:20,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:20,420 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash 672369264, now seen corresponding path program 1 times [2022-07-22 16:52:20,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:20,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902384665] [2022-07-22 16:52:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:52:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 16:52:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:52:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:52:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:52:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:52:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:52:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 16:52:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:20,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902384665] [2022-07-22 16:52:20,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902384665] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:20,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429340833] [2022-07-22 16:52:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:20,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:20,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:20,576 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) [2022-07-22 16:52:20,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 16:52:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:20,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:52:20,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 16:52:20,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:20,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429340833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:20,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:20,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-22 16:52:20,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101681923] [2022-07-22 16:52:20,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:20,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:52:20,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:20,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:52:20,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:52:20,849 INFO L87 Difference]: Start difference. First operand 666 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:20,977 INFO L93 Difference]: Finished difference Result 1343 states and 2224 transitions. [2022-07-22 16:52:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:52:20,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2022-07-22 16:52:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:20,981 INFO L225 Difference]: With dead ends: 1343 [2022-07-22 16:52:20,981 INFO L226 Difference]: Without dead ends: 700 [2022-07-22 16:52:20,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:52:20,984 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 140 mSDsluCounter, 5628 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:20,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6584 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-07-22 16:52:20,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 666. [2022-07-22 16:52:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 553 states have internal predecessors, (896), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-07-22 16:52:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1102 transitions. [2022-07-22 16:52:21,000 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1102 transitions. Word has length 89 [2022-07-22 16:52:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:21,001 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1102 transitions. [2022-07-22 16:52:21,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1102 transitions. [2022-07-22 16:52:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 16:52:21,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:21,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:21,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:21,221 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,SelfDestructingSolverStorable7 [2022-07-22 16:52:21,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:21,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:21,222 INFO L85 PathProgramCache]: Analyzing trace with hash 653145198, now seen corresponding path program 1 times [2022-07-22 16:52:21,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:21,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320257206] [2022-07-22 16:52:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:21,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:52:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:52:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:52:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:52:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 16:52:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:52:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:52:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 16:52:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 16:52:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:21,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320257206] [2022-07-22 16:52:21,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320257206] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:21,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663996700] [2022-07-22 16:52:21,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:21,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:21,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:21,540 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) [2022-07-22 16:52:21,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 16:52:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:21,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:52:21,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:52:21,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:21,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663996700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:21,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:21,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-22 16:52:21,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344288010] [2022-07-22 16:52:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:21,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:52:21,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:21,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:52:21,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:52:21,831 INFO L87 Difference]: Start difference. First operand 666 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 16:52:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:21,954 INFO L93 Difference]: Finished difference Result 1343 states and 2224 transitions. [2022-07-22 16:52:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:52:21,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2022-07-22 16:52:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:21,960 INFO L225 Difference]: With dead ends: 1343 [2022-07-22 16:52:21,960 INFO L226 Difference]: Without dead ends: 700 [2022-07-22 16:52:21,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:52:21,964 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 150 mSDsluCounter, 5616 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6572 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:21,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 6572 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-07-22 16:52:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 666. [2022-07-22 16:52:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 553 states have internal predecessors, (896), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-07-22 16:52:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1102 transitions. [2022-07-22 16:52:21,981 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1102 transitions. Word has length 106 [2022-07-22 16:52:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:21,982 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1102 transitions. [2022-07-22 16:52:21,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 16:52:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1102 transitions. [2022-07-22 16:52:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 16:52:21,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:21,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:22,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:22,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:22,202 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:22,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash -521611988, now seen corresponding path program 1 times [2022-07-22 16:52:22,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:22,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106968978] [2022-07-22 16:52:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:22,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:52:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:52:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:52:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:52:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:52:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 16:52:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:52:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 16:52:22,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:22,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106968978] [2022-07-22 16:52:22,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106968978] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:22,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152277962] [2022-07-22 16:52:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:22,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:22,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:22,458 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) [2022-07-22 16:52:22,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 16:52:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:22,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:52:22,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:52:22,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:22,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152277962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:22,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:22,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-22 16:52:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841935124] [2022-07-22 16:52:22,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:22,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:52:22,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:22,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:52:22,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:52:22,787 INFO L87 Difference]: Start difference. First operand 666 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 16:52:22,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:22,908 INFO L93 Difference]: Finished difference Result 1334 states and 2209 transitions. [2022-07-22 16:52:22,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:52:22,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2022-07-22 16:52:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:22,912 INFO L225 Difference]: With dead ends: 1334 [2022-07-22 16:52:22,912 INFO L226 Difference]: Without dead ends: 691 [2022-07-22 16:52:22,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:52:22,914 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 160 mSDsluCounter, 5604 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6560 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:22,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 6560 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:22,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-22 16:52:22,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 666. [2022-07-22 16:52:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 553 states have internal predecessors, (896), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-07-22 16:52:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1102 transitions. [2022-07-22 16:52:22,927 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1102 transitions. Word has length 107 [2022-07-22 16:52:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:22,927 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1102 transitions. [2022-07-22 16:52:22,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 16:52:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1102 transitions. [2022-07-22 16:52:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 16:52:22,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:22,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:22,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:23,147 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,SelfDestructingSolverStorable9 [2022-07-22 16:52:23,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:23,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:23,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1019428749, now seen corresponding path program 1 times [2022-07-22 16:52:23,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:23,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907935687] [2022-07-22 16:52:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:23,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:52:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:52:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:52:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:52:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 16:52:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:52:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 16:52:23,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:23,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907935687] [2022-07-22 16:52:23,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907935687] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:23,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077661895] [2022-07-22 16:52:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:23,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:23,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:23,270 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) [2022-07-22 16:52:23,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 16:52:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:52:23,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:52:23,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:23,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077661895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:23,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:23,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-22 16:52:23,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653672075] [2022-07-22 16:52:23,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:23,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:52:23,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:23,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:52:23,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 16:52:23,471 INFO L87 Difference]: Start difference. First operand 666 states and 1102 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 16:52:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:23,547 INFO L93 Difference]: Finished difference Result 1298 states and 2156 transitions. [2022-07-22 16:52:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:52:23,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2022-07-22 16:52:23,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:23,550 INFO L225 Difference]: With dead ends: 1298 [2022-07-22 16:52:23,550 INFO L226 Difference]: Without dead ends: 666 [2022-07-22 16:52:23,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:52:23,553 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 35 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:23,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2870 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:52:23,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-22 16:52:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2022-07-22 16:52:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6716697936210132) internal successors, (891), 553 states have internal predecessors, (891), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-07-22 16:52:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1097 transitions. [2022-07-22 16:52:23,564 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1097 transitions. Word has length 91 [2022-07-22 16:52:23,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:23,565 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1097 transitions. [2022-07-22 16:52:23,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 16:52:23,565 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1097 transitions. [2022-07-22 16:52:23,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 16:52:23,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:23,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:23,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:23,785 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,SelfDestructingSolverStorable10 [2022-07-22 16:52:23,785 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:23,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:23,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1412497752, now seen corresponding path program 1 times [2022-07-22 16:52:23,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:23,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361453205] [2022-07-22 16:52:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:23,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:52:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:52:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:52:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:52:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 16:52:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 16:52:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:52:23,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:23,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361453205] [2022-07-22 16:52:23,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361453205] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:23,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523008006] [2022-07-22 16:52:23,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:23,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:23,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:23,931 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) [2022-07-22 16:52:23,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 16:52:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:52:24,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:52:24,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:24,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523008006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:24,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:24,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-22 16:52:24,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108727723] [2022-07-22 16:52:24,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:24,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:52:24,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:24,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:52:24,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:52:24,139 INFO L87 Difference]: Start difference. First operand 666 states and 1097 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 16:52:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:24,246 INFO L93 Difference]: Finished difference Result 1294 states and 2147 transitions. [2022-07-22 16:52:24,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:52:24,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2022-07-22 16:52:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:24,250 INFO L225 Difference]: With dead ends: 1294 [2022-07-22 16:52:24,250 INFO L226 Difference]: Without dead ends: 720 [2022-07-22 16:52:24,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:52:24,252 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 241 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:24,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2704 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-07-22 16:52:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 711. [2022-07-22 16:52:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 577 states have (on average 1.6897746967071057) internal successors, (975), 597 states have internal predecessors, (975), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2022-07-22 16:52:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1180 transitions. [2022-07-22 16:52:24,264 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1180 transitions. Word has length 92 [2022-07-22 16:52:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:24,264 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1180 transitions. [2022-07-22 16:52:24,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 16:52:24,265 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1180 transitions. [2022-07-22 16:52:24,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 16:52:24,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:24,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:24,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:24,479 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,SelfDestructingSolverStorable11 [2022-07-22 16:52:24,479 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:24,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:24,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1539448053, now seen corresponding path program 1 times [2022-07-22 16:52:24,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:24,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749819998] [2022-07-22 16:52:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:24,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:52:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:52:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:52:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 16:52:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:52:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 16:52:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:52:24,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:24,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749819998] [2022-07-22 16:52:24,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749819998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:24,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345765014] [2022-07-22 16:52:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:24,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:24,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:24,684 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) [2022-07-22 16:52:24,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 16:52:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:24,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:52:24,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 16:52:24,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:24,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345765014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:24,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:24,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-07-22 16:52:24,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67923775] [2022-07-22 16:52:24,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:24,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:52:24,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:24,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:52:24,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:52:24,925 INFO L87 Difference]: Start difference. First operand 711 states and 1180 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:25,016 INFO L93 Difference]: Finished difference Result 1320 states and 2183 transitions. [2022-07-22 16:52:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:52:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-07-22 16:52:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:25,020 INFO L225 Difference]: With dead ends: 1320 [2022-07-22 16:52:25,020 INFO L226 Difference]: Without dead ends: 746 [2022-07-22 16:52:25,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:52:25,023 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 115 mSDsluCounter, 4699 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5660 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:25,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5660 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-07-22 16:52:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 724. [2022-07-22 16:52:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 587 states have (on average 1.686541737649063) internal successors, (990), 609 states have internal predecessors, (990), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-07-22 16:52:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1199 transitions. [2022-07-22 16:52:25,039 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1199 transitions. Word has length 93 [2022-07-22 16:52:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:25,039 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1199 transitions. [2022-07-22 16:52:25,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:25,039 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1199 transitions. [2022-07-22 16:52:25,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 16:52:25,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:25,043 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:25,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:25,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 16:52:25,262 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:25,262 INFO L85 PathProgramCache]: Analyzing trace with hash -600539538, now seen corresponding path program 1 times [2022-07-22 16:52:25,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:25,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647707318] [2022-07-22 16:52:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:25,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:52:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:52:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:52:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 16:52:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 16:52:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:52:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:52:25,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:25,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647707318] [2022-07-22 16:52:25,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647707318] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:25,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071816046] [2022-07-22 16:52:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:25,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:25,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:25,417 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:52:25,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 16:52:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:25,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:52:25,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 16:52:25,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:25,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071816046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:25,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:25,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-22 16:52:25,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850594028] [2022-07-22 16:52:25,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:25,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:52:25,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:52:25,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:52:25,674 INFO L87 Difference]: Start difference. First operand 724 states and 1199 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:25,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:25,762 INFO L93 Difference]: Finished difference Result 1329 states and 2197 transitions. [2022-07-22 16:52:25,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:52:25,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-07-22 16:52:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:25,767 INFO L225 Difference]: With dead ends: 1329 [2022-07-22 16:52:25,767 INFO L226 Difference]: Without dead ends: 755 [2022-07-22 16:52:25,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:52:25,770 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 126 mSDsluCounter, 4687 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:25,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5648 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:25,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-07-22 16:52:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 724. [2022-07-22 16:52:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 587 states have (on average 1.686541737649063) internal successors, (990), 609 states have internal predecessors, (990), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-07-22 16:52:25,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1199 transitions. [2022-07-22 16:52:25,785 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1199 transitions. Word has length 94 [2022-07-22 16:52:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:25,785 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1199 transitions. [2022-07-22 16:52:25,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:25,785 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1199 transitions. [2022-07-22 16:52:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 16:52:25,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:25,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:25,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:26,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:26,005 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:26,006 INFO L85 PathProgramCache]: Analyzing trace with hash 447314670, now seen corresponding path program 1 times [2022-07-22 16:52:26,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:26,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512051914] [2022-07-22 16:52:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:26,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:52:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:52:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:52:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 16:52:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 16:52:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:52:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:52:26,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:26,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512051914] [2022-07-22 16:52:26,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512051914] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:26,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684351951] [2022-07-22 16:52:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:26,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:26,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:26,146 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:52:26,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 16:52:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:52:26,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 16:52:26,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:26,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684351951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:26,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:26,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-22 16:52:26,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361496213] [2022-07-22 16:52:26,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:26,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:52:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:26,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:52:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:52:26,412 INFO L87 Difference]: Start difference. First operand 724 states and 1199 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:26,541 INFO L93 Difference]: Finished difference Result 1332 states and 2200 transitions. [2022-07-22 16:52:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:52:26,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-07-22 16:52:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:26,563 INFO L225 Difference]: With dead ends: 1332 [2022-07-22 16:52:26,563 INFO L226 Difference]: Without dead ends: 758 [2022-07-22 16:52:26,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:52:26,566 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 138 mSDsluCounter, 5604 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6555 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:26,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 6555 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-07-22 16:52:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 724. [2022-07-22 16:52:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 587 states have (on average 1.686541737649063) internal successors, (990), 609 states have internal predecessors, (990), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-07-22 16:52:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1199 transitions. [2022-07-22 16:52:26,582 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1199 transitions. Word has length 94 [2022-07-22 16:52:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:26,582 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1199 transitions. [2022-07-22 16:52:26,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1199 transitions. [2022-07-22 16:52:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 16:52:26,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:26,584 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:26,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:26,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 16:52:26,802 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:26,802 INFO L85 PathProgramCache]: Analyzing trace with hash -454179716, now seen corresponding path program 1 times [2022-07-22 16:52:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:26,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810585305] [2022-07-22 16:52:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:26,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:52:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:52:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:52:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 16:52:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 16:52:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:52:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 16:52:26,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:26,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810585305] [2022-07-22 16:52:26,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810585305] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:26,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049122406] [2022-07-22 16:52:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:26,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:26,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:26,936 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:52:26,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 16:52:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:52:27,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:52:27,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:27,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049122406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:27,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:27,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-22 16:52:27,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451744552] [2022-07-22 16:52:27,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:52:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:52:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 16:52:27,141 INFO L87 Difference]: Start difference. First operand 724 states and 1199 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 16:52:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:27,177 INFO L93 Difference]: Finished difference Result 1374 states and 2279 transitions. [2022-07-22 16:52:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:52:27,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2022-07-22 16:52:27,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:27,180 INFO L225 Difference]: With dead ends: 1374 [2022-07-22 16:52:27,180 INFO L226 Difference]: Without dead ends: 724 [2022-07-22 16:52:27,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:52:27,182 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 10 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:27,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2872 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:52:27,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-22 16:52:27,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2022-07-22 16:52:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 587 states have (on average 1.6814310051107326) internal successors, (987), 609 states have internal predecessors, (987), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-07-22 16:52:27,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1196 transitions. [2022-07-22 16:52:27,195 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1196 transitions. Word has length 94 [2022-07-22 16:52:27,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:27,196 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1196 transitions. [2022-07-22 16:52:27,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 16:52:27,196 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1196 transitions. [2022-07-22 16:52:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 16:52:27,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:27,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:27,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:27,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 16:52:27,415 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:27,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1290889357, now seen corresponding path program 1 times [2022-07-22 16:52:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:27,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592118023] [2022-07-22 16:52:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:52:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:52:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:52:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:52:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:52:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 16:52:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:52:27,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:27,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592118023] [2022-07-22 16:52:27,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592118023] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:27,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598300843] [2022-07-22 16:52:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:27,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:27,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:27,564 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:52:27,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 16:52:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:27,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:52:27,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 16:52:27,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:27,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598300843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:27,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:27,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-22 16:52:27,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001714871] [2022-07-22 16:52:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:27,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:52:27,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:52:27,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:52:27,876 INFO L87 Difference]: Start difference. First operand 724 states and 1196 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:28,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:28,027 INFO L93 Difference]: Finished difference Result 1323 states and 2183 transitions. [2022-07-22 16:52:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:52:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2022-07-22 16:52:28,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:28,032 INFO L225 Difference]: With dead ends: 1323 [2022-07-22 16:52:28,032 INFO L226 Difference]: Without dead ends: 749 [2022-07-22 16:52:28,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:52:28,035 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 148 mSDsluCounter, 5577 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6525 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:28,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 6525 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:52:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-22 16:52:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 724. [2022-07-22 16:52:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 587 states have (on average 1.6814310051107326) internal successors, (987), 609 states have internal predecessors, (987), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-07-22 16:52:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1196 transitions. [2022-07-22 16:52:28,053 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1196 transitions. Word has length 95 [2022-07-22 16:52:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:28,053 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1196 transitions. [2022-07-22 16:52:28,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 16:52:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1196 transitions. [2022-07-22 16:52:28,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:52:28,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:28,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:28,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-22 16:52:28,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 16:52:28,274 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:28,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash 879670570, now seen corresponding path program 1 times [2022-07-22 16:52:28,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:28,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645160001] [2022-07-22 16:52:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:28,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:52:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:52:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:52:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 16:52:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:52:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:52:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 16:52:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:52:28,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:28,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645160001] [2022-07-22 16:52:28,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645160001] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:28,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97727250] [2022-07-22 16:52:28,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:28,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:28,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:28,583 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:52:28,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 16:52:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:28,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:52:28,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 16:52:28,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:28,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97727250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:28,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:28,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-07-22 16:52:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398778368] [2022-07-22 16:52:28,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:28,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:52:28,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:28,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:52:28,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:52:28,959 INFO L87 Difference]: Start difference. First operand 724 states and 1196 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:52:31,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:31,300 INFO L93 Difference]: Finished difference Result 2502 states and 4179 transitions. [2022-07-22 16:52:31,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:52:31,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-07-22 16:52:31,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:31,309 INFO L225 Difference]: With dead ends: 2502 [2022-07-22 16:52:31,309 INFO L226 Difference]: Without dead ends: 1932 [2022-07-22 16:52:31,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:52:31,311 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 3110 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3305 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 3399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:31,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3305 Valid, 2410 Invalid, 3399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:52:31,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2022-07-22 16:52:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1765. [2022-07-22 16:52:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1426 states have (on average 1.6760168302945302) internal successors, (2390), 1464 states have internal predecessors, (2390), 269 states have call successors, (269), 66 states have call predecessors, (269), 69 states have return successors, (290), 249 states have call predecessors, (290), 265 states have call successors, (290) [2022-07-22 16:52:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2949 transitions. [2022-07-22 16:52:31,353 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2949 transitions. Word has length 112 [2022-07-22 16:52:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:31,354 INFO L495 AbstractCegarLoop]: Abstraction has 1765 states and 2949 transitions. [2022-07-22 16:52:31,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:52:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2949 transitions. [2022-07-22 16:52:31,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-22 16:52:31,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:31,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:31,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:31,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 16:52:31,571 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:31,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:31,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2044615012, now seen corresponding path program 1 times [2022-07-22 16:52:31,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:31,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217337673] [2022-07-22 16:52:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:31,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:52:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:31,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:31,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:31,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:52:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:52:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:52:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:52:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:52:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 16:52:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:52:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 16:52:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 16:52:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:52:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:52:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 16:52:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:52:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 16:52:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 16:52:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-22 16:52:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 16:52:32,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:32,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217337673] [2022-07-22 16:52:32,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217337673] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:32,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753796841] [2022-07-22 16:52:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:32,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:32,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:32,216 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:52:32,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 16:52:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:32,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:52:32,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 16:52:32,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:32,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753796841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:32,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:32,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [22] total 23 [2022-07-22 16:52:32,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963083875] [2022-07-22 16:52:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:32,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:52:32,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:32,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:52:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2022-07-22 16:52:32,537 INFO L87 Difference]: Start difference. First operand 1765 states and 2949 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 16:52:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:32,602 INFO L93 Difference]: Finished difference Result 4970 states and 8406 transitions. [2022-07-22 16:52:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:52:32,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 186 [2022-07-22 16:52:32,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:32,619 INFO L225 Difference]: With dead ends: 4970 [2022-07-22 16:52:32,619 INFO L226 Difference]: Without dead ends: 3360 [2022-07-22 16:52:32,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2022-07-22 16:52:32,628 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 973 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:32,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 2064 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:52:32,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2022-07-22 16:52:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3341. [2022-07-22 16:52:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3341 states, 2696 states have (on average 1.676186943620178) internal successors, (4519), 2763 states have internal predecessors, (4519), 515 states have call successors, (515), 123 states have call predecessors, (515), 129 states have return successors, (591), 484 states have call predecessors, (591), 509 states have call successors, (591) [2022-07-22 16:52:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 5625 transitions. [2022-07-22 16:52:32,768 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 5625 transitions. Word has length 186 [2022-07-22 16:52:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:32,769 INFO L495 AbstractCegarLoop]: Abstraction has 3341 states and 5625 transitions. [2022-07-22 16:52:32,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 16:52:32,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 5625 transitions. [2022-07-22 16:52:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-22 16:52:32,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:32,773 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:32,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:32,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:32,993 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:32,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash 508172850, now seen corresponding path program 1 times [2022-07-22 16:52:32,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:32,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89758183] [2022-07-22 16:52:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:52:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:52:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:52:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:52:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:52:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:52:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:52:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 16:52:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:52:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 16:52:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:52:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:52:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:52:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 16:52:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:52:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-22 16:52:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 16:52:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 16:52:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 16:52:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:33,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89758183] [2022-07-22 16:52:33,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89758183] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:33,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637071272] [2022-07-22 16:52:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:33,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:33,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:33,432 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:52:33,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 16:52:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:33,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 16:52:33,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 16:52:33,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:52:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 16:52:34,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637071272] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:52:34,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 16:52:34,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2022-07-22 16:52:34,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875125623] [2022-07-22 16:52:34,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 16:52:34,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 16:52:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 16:52:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:52:34,029 INFO L87 Difference]: Start difference. First operand 3341 states and 5625 transitions. Second operand has 17 states, 16 states have (on average 11.3125) internal successors, (181), 12 states have internal predecessors, (181), 7 states have call successors, (41), 9 states have call predecessors, (41), 6 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-22 16:52:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:45,830 INFO L93 Difference]: Finished difference Result 12466 states and 21337 transitions. [2022-07-22 16:52:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-22 16:52:45,831 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 11.3125) internal successors, (181), 12 states have internal predecessors, (181), 7 states have call successors, (41), 9 states have call predecessors, (41), 6 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) Word has length 187 [2022-07-22 16:52:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:45,870 INFO L225 Difference]: With dead ends: 12466 [2022-07-22 16:52:45,870 INFO L226 Difference]: Without dead ends: 9083 [2022-07-22 16:52:45,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 432 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=486, Invalid=2064, Unknown=0, NotChecked=0, Total=2550 [2022-07-22 16:52:45,887 INFO L413 NwaCegarLoop]: 1210 mSDtfsCounter, 2484 mSDsluCounter, 6095 mSDsCounter, 0 mSdLazyCounter, 13862 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2586 SdHoareTripleChecker+Valid, 7305 SdHoareTripleChecker+Invalid, 14648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 13862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:45,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2586 Valid, 7305 Invalid, 14648 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [786 Valid, 13862 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-07-22 16:52:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9083 states. [2022-07-22 16:52:46,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9083 to 5786. [2022-07-22 16:52:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5786 states, 4631 states have (on average 1.6367955085294752) internal successors, (7580), 4717 states have internal predecessors, (7580), 915 states have call successors, (915), 208 states have call predecessors, (915), 239 states have return successors, (1189), 882 states have call predecessors, (1189), 905 states have call successors, (1189) [2022-07-22 16:52:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5786 states to 5786 states and 9684 transitions. [2022-07-22 16:52:46,408 INFO L78 Accepts]: Start accepts. Automaton has 5786 states and 9684 transitions. Word has length 187 [2022-07-22 16:52:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:46,408 INFO L495 AbstractCegarLoop]: Abstraction has 5786 states and 9684 transitions. [2022-07-22 16:52:46,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 11.3125) internal successors, (181), 12 states have internal predecessors, (181), 7 states have call successors, (41), 9 states have call predecessors, (41), 6 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-22 16:52:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5786 states and 9684 transitions. [2022-07-22 16:52:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-22 16:52:46,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:46,414 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:46,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-22 16:52:46,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:46,648 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:46,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:46,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1421368437, now seen corresponding path program 1 times [2022-07-22 16:52:46,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:46,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872142792] [2022-07-22 16:52:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:46,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:46,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:52:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:46,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 16:52:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:46,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:52:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:52:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:46,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:52:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:52:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:52:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 16:52:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:52:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 16:52:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:52:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:52:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:52:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 16:52:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:52:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-22 16:52:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 16:52:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 16:52:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-22 16:52:47,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:47,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872142792] [2022-07-22 16:52:47,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872142792] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:47,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808863710] [2022-07-22 16:52:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:47,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:47,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:47,095 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:52:47,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-22 16:52:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:47,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:52:47,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 16:52:47,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:52:47,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808863710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:52:47,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:52:47,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-22 16:52:47,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123669383] [2022-07-22 16:52:47,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:52:47,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:52:47,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:52:47,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:52:47,481 INFO L87 Difference]: Start difference. First operand 5786 states and 9684 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-22 16:52:50,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:52:50,077 INFO L93 Difference]: Finished difference Result 13019 states and 22018 transitions. [2022-07-22 16:52:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 16:52:50,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 187 [2022-07-22 16:52:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:52:50,109 INFO L225 Difference]: With dead ends: 13019 [2022-07-22 16:52:50,109 INFO L226 Difference]: Without dead ends: 7320 [2022-07-22 16:52:50,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2022-07-22 16:52:50,125 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 2073 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 4278 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 4799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 4278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:52:50,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2166 Valid, 2287 Invalid, 4799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 4278 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 16:52:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2022-07-22 16:52:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 6056. [2022-07-22 16:52:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6056 states, 4815 states have (on average 1.6186915887850468) internal successors, (7794), 4911 states have internal predecessors, (7794), 999 states have call successors, (999), 208 states have call predecessors, (999), 241 states have return successors, (1293), 958 states have call predecessors, (1293), 989 states have call successors, (1293) [2022-07-22 16:52:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6056 states to 6056 states and 10086 transitions. [2022-07-22 16:52:50,587 INFO L78 Accepts]: Start accepts. Automaton has 6056 states and 10086 transitions. Word has length 187 [2022-07-22 16:52:50,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:52:50,588 INFO L495 AbstractCegarLoop]: Abstraction has 6056 states and 10086 transitions. [2022-07-22 16:52:50,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-22 16:52:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 6056 states and 10086 transitions. [2022-07-22 16:52:50,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-22 16:52:50,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:52:50,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:52:50,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-22 16:52:50,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:50,813 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:52:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:52:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2101164661, now seen corresponding path program 1 times [2022-07-22 16:52:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:52:50,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683297708] [2022-07-22 16:52:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:50,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:52:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:50,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:52:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:50,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:52:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:50,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 16:52:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:50,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:50,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:52:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:52:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:52:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:52:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:52:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:52:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 16:52:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:52:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 16:52:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 16:52:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:52:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:52:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 16:52:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:52:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 16:52:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 16:52:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 16:52:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-22 16:52:51,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:52:51,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683297708] [2022-07-22 16:52:51,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683297708] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:52:51,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621061634] [2022-07-22 16:52:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:52:51,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:52:51,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:52:51,235 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:52:51,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-22 16:52:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:52:51,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 16:52:51,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:52:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:52:51,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:52:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-22 16:52:51,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621061634] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:52:51,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 16:52:51,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2022-07-22 16:52:51,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371159494] [2022-07-22 16:52:51,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 16:52:51,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 16:52:51,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:52:51,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 16:52:51,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:52:51,864 INFO L87 Difference]: Start difference. First operand 6056 states and 10086 transitions. Second operand has 16 states, 15 states have (on average 15.866666666666667) internal successors, (238), 11 states have internal predecessors, (238), 6 states have call successors, (53), 9 states have call predecessors, (53), 6 states have return successors, (47), 6 states have call predecessors, (47), 6 states have call successors, (47) [2022-07-22 16:53:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:53:02,389 INFO L93 Difference]: Finished difference Result 14335 states and 24031 transitions. [2022-07-22 16:53:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-22 16:53:02,391 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 15.866666666666667) internal successors, (238), 11 states have internal predecessors, (238), 6 states have call successors, (53), 9 states have call predecessors, (53), 6 states have return successors, (47), 6 states have call predecessors, (47), 6 states have call successors, (47) Word has length 188 [2022-07-22 16:53:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:53:02,421 INFO L225 Difference]: With dead ends: 14335 [2022-07-22 16:53:02,422 INFO L226 Difference]: Without dead ends: 8312 [2022-07-22 16:53:02,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 435 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=447, Invalid=1809, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 16:53:02,447 INFO L413 NwaCegarLoop]: 1216 mSDtfsCounter, 3069 mSDsluCounter, 4911 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 1029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3121 SdHoareTripleChecker+Valid, 6127 SdHoareTripleChecker+Invalid, 12774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1029 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-22 16:53:02,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3121 Valid, 6127 Invalid, 12774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1029 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-07-22 16:53:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8312 states. [2022-07-22 16:53:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8312 to 5596. [2022-07-22 16:53:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 4492 states have (on average 1.6282279608192343) internal successors, (7314), 4565 states have internal predecessors, (7314), 876 states have call successors, (876), 195 states have call predecessors, (876), 227 states have return successors, (1118), 857 states have call predecessors, (1118), 866 states have call successors, (1118) [2022-07-22 16:53:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 9308 transitions. [2022-07-22 16:53:02,911 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 9308 transitions. Word has length 188 [2022-07-22 16:53:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:53:02,911 INFO L495 AbstractCegarLoop]: Abstraction has 5596 states and 9308 transitions. [2022-07-22 16:53:02,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 15.866666666666667) internal successors, (238), 11 states have internal predecessors, (238), 6 states have call successors, (53), 9 states have call predecessors, (53), 6 states have return successors, (47), 6 states have call predecessors, (47), 6 states have call successors, (47) [2022-07-22 16:53:02,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 9308 transitions. [2022-07-22 16:53:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 16:53:02,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:53:02,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:53:02,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-22 16:53:03,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:53:03,132 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:53:03,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:53:03,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1591213117, now seen corresponding path program 1 times [2022-07-22 16:53:03,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:53:03,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767937179] [2022-07-22 16:53:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:53:03,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:53:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:53:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:53:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:53:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:53:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:53:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 16:53:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:53:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:53:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:53:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 16:53:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:53:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:53:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 16:53:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 16:53:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 16:53:03,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:53:03,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767937179] [2022-07-22 16:53:03,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767937179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:53:03,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:53:03,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 16:53:03,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474167263] [2022-07-22 16:53:03,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:53:03,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:53:03,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:53:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:53:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:53:03,428 INFO L87 Difference]: Start difference. First operand 5596 states and 9308 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:53:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:53:07,528 INFO L93 Difference]: Finished difference Result 13143 states and 22004 transitions. [2022-07-22 16:53:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:53:07,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2022-07-22 16:53:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:53:07,550 INFO L225 Difference]: With dead ends: 13143 [2022-07-22 16:53:07,551 INFO L226 Difference]: Without dead ends: 7562 [2022-07-22 16:53:07,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:53:07,564 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 1562 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 3076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:53:07,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 2253 Invalid, 3076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 16:53:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7562 states. [2022-07-22 16:53:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7562 to 5568. [2022-07-22 16:53:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5568 states, 4467 states have (on average 1.6268188941123796) internal successors, (7267), 4538 states have internal predecessors, (7267), 875 states have call successors, (875), 195 states have call predecessors, (875), 225 states have return successors, (1115), 856 states have call predecessors, (1115), 865 states have call successors, (1115) [2022-07-22 16:53:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 9257 transitions. [2022-07-22 16:53:08,061 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 9257 transitions. Word has length 136 [2022-07-22 16:53:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:53:08,061 INFO L495 AbstractCegarLoop]: Abstraction has 5568 states and 9257 transitions. [2022-07-22 16:53:08,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:53:08,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 9257 transitions. [2022-07-22 16:53:08,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 16:53:08,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:53:08,066 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:53:08,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 16:53:08,066 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:53:08,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:53:08,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1361650820, now seen corresponding path program 1 times [2022-07-22 16:53:08,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:53:08,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344050372] [2022-07-22 16:53:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:53:08,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:53:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:53:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:53:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:53:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:53:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:53:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:53:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 16:53:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:53:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:53:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 16:53:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:53:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 16:53:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:53:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 16:53:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:53:08,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:53:08,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344050372] [2022-07-22 16:53:08,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344050372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:53:08,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:53:08,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 16:53:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493005488] [2022-07-22 16:53:08,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:53:08,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 16:53:08,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:53:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 16:53:08,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:53:08,392 INFO L87 Difference]: Start difference. First operand 5568 states and 9257 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:53:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:53:20,465 INFO L93 Difference]: Finished difference Result 17590 states and 31401 transitions. [2022-07-22 16:53:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 16:53:20,469 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 137 [2022-07-22 16:53:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:53:20,520 INFO L225 Difference]: With dead ends: 17590 [2022-07-22 16:53:20,520 INFO L226 Difference]: Without dead ends: 12127 [2022-07-22 16:53:20,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 16:53:20,546 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 2799 mSDsluCounter, 3834 mSDsCounter, 0 mSdLazyCounter, 9510 mSolverCounterSat, 1088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2882 SdHoareTripleChecker+Valid, 4873 SdHoareTripleChecker+Invalid, 10598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1088 IncrementalHoareTripleChecker+Valid, 9510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-07-22 16:53:20,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2882 Valid, 4873 Invalid, 10598 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1088 Valid, 9510 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-07-22 16:53:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12127 states. [2022-07-22 16:53:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12127 to 9057. [2022-07-22 16:53:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9057 states, 7242 states have (on average 1.6059099696216514) internal successors, (11630), 7356 states have internal predecessors, (11630), 1413 states have call successors, (1413), 314 states have call predecessors, (1413), 401 states have return successors, (2296), 1430 states have call predecessors, (2296), 1399 states have call successors, (2296) [2022-07-22 16:53:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9057 states to 9057 states and 15339 transitions. [2022-07-22 16:53:21,343 INFO L78 Accepts]: Start accepts. Automaton has 9057 states and 15339 transitions. Word has length 137 [2022-07-22 16:53:21,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:53:21,343 INFO L495 AbstractCegarLoop]: Abstraction has 9057 states and 15339 transitions. [2022-07-22 16:53:21,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:53:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 9057 states and 15339 transitions. [2022-07-22 16:53:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 16:53:21,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:53:21,348 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:53:21,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 16:53:21,348 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:53:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:53:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1930652146, now seen corresponding path program 1 times [2022-07-22 16:53:21,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:53:21,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129872310] [2022-07-22 16:53:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:53:21,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:53:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:53:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:53:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:53:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:53:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:53:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:53:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 16:53:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:53:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:53:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 16:53:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 16:53:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 16:53:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:53:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 16:53:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:53:21,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:53:21,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129872310] [2022-07-22 16:53:21,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129872310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:53:21,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:53:21,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 16:53:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361775075] [2022-07-22 16:53:21,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:53:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 16:53:21,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:53:21,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 16:53:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:53:21,713 INFO L87 Difference]: Start difference. First operand 9057 states and 15339 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:53:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:53:32,959 INFO L93 Difference]: Finished difference Result 30303 states and 58117 transitions. [2022-07-22 16:53:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 16:53:32,960 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 139 [2022-07-22 16:53:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:53:33,062 INFO L225 Difference]: With dead ends: 30303 [2022-07-22 16:53:33,062 INFO L226 Difference]: Without dead ends: 21351 [2022-07-22 16:53:33,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2022-07-22 16:53:33,112 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 4909 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 7966 mSolverCounterSat, 1648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5000 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 9614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1648 IncrementalHoareTripleChecker+Valid, 7966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:53:33,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5000 Valid, 4173 Invalid, 9614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1648 Valid, 7966 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-22 16:53:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21351 states. [2022-07-22 16:53:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21351 to 15961. [2022-07-22 16:53:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15961 states, 12746 states have (on average 1.5954809351953554) internal successors, (20336), 12926 states have internal predecessors, (20336), 2501 states have call successors, (2501), 552 states have call predecessors, (2501), 713 states have return successors, (5336), 2570 states have call predecessors, (5336), 2479 states have call successors, (5336) [2022-07-22 16:53:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15961 states to 15961 states and 28173 transitions. [2022-07-22 16:53:34,681 INFO L78 Accepts]: Start accepts. Automaton has 15961 states and 28173 transitions. Word has length 139 [2022-07-22 16:53:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:53:34,681 INFO L495 AbstractCegarLoop]: Abstraction has 15961 states and 28173 transitions. [2022-07-22 16:53:34,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:53:34,682 INFO L276 IsEmpty]: Start isEmpty. Operand 15961 states and 28173 transitions. [2022-07-22 16:53:34,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 16:53:34,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:53:34,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:53:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 16:53:34,686 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:53:34,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:53:34,687 INFO L85 PathProgramCache]: Analyzing trace with hash -193452994, now seen corresponding path program 1 times [2022-07-22 16:53:34,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:53:34,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61331986] [2022-07-22 16:53:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:53:34,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:53:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:53:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:53:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:53:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:53:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:53:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:53:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 16:53:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:53:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:53:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:53:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:53:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 16:53:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 16:53:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 16:53:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:53:34,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:53:34,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61331986] [2022-07-22 16:53:34,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61331986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:53:34,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:53:34,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 16:53:34,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389459480] [2022-07-22 16:53:34,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:53:34,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:53:34,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:53:34,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:53:34,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 16:53:34,937 INFO L87 Difference]: Start difference. First operand 15961 states and 28173 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:53:48,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:53:48,010 INFO L93 Difference]: Finished difference Result 55299 states and 118991 transitions. [2022-07-22 16:53:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:53:48,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 140 [2022-07-22 16:53:48,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:53:48,257 INFO L225 Difference]: With dead ends: 55299 [2022-07-22 16:53:48,258 INFO L226 Difference]: Without dead ends: 39443 [2022-07-22 16:53:48,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:53:48,423 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 3744 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 4834 mSolverCounterSat, 1334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3837 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 6168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1334 IncrementalHoareTripleChecker+Valid, 4834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:53:48,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3837 Valid, 2867 Invalid, 6168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1334 Valid, 4834 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-22 16:53:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39443 states. [2022-07-22 16:53:51,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39443 to 29737. [2022-07-22 16:53:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29737 states, 23752 states have (on average 1.5877399797911755) internal successors, (37712), 24096 states have internal predecessors, (37712), 4647 states have call successors, (4647), 1028 states have call predecessors, (4647), 1337 states have return successors, (13620), 4788 states have call predecessors, (13620), 4609 states have call successors, (13620) [2022-07-22 16:53:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29737 states to 29737 states and 55979 transitions. [2022-07-22 16:53:52,179 INFO L78 Accepts]: Start accepts. Automaton has 29737 states and 55979 transitions. Word has length 140 [2022-07-22 16:53:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:53:52,179 INFO L495 AbstractCegarLoop]: Abstraction has 29737 states and 55979 transitions. [2022-07-22 16:53:52,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:53:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand 29737 states and 55979 transitions. [2022-07-22 16:53:52,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 16:53:52,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:53:52,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:53:52,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 16:53:52,185 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:53:52,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:53:52,185 INFO L85 PathProgramCache]: Analyzing trace with hash -56163867, now seen corresponding path program 1 times [2022-07-22 16:53:52,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:53:52,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090252346] [2022-07-22 16:53:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:53:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:53:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:53:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:53:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:53:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:53:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:53:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:53:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 16:53:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:53:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:53:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:53:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 16:53:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 16:53:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 16:53:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 16:53:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:53:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:53:52,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:53:52,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090252346] [2022-07-22 16:53:52,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090252346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:53:52,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:53:52,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 16:53:52,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55548231] [2022-07-22 16:53:52,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:53:52,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 16:53:52,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:53:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 16:53:52,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:53:52,511 INFO L87 Difference]: Start difference. First operand 29737 states and 55979 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:54:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:54:07,138 INFO L93 Difference]: Finished difference Result 69317 states and 138724 transitions. [2022-07-22 16:54:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 16:54:07,139 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 142 [2022-07-22 16:54:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:54:07,383 INFO L225 Difference]: With dead ends: 69317 [2022-07-22 16:54:07,383 INFO L226 Difference]: Without dead ends: 39707 [2022-07-22 16:54:07,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2022-07-22 16:54:07,590 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 4960 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 8113 mSolverCounterSat, 1695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5059 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 9808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1695 IncrementalHoareTripleChecker+Valid, 8113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:54:07,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5059 Valid, 3484 Invalid, 9808 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1695 Valid, 8113 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-07-22 16:54:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39707 states. [2022-07-22 16:54:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39707 to 29747. [2022-07-22 16:54:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29747 states, 23762 states have (on average 1.587492635300059) internal successors, (37722), 24096 states have internal predecessors, (37722), 4647 states have call successors, (4647), 1028 states have call predecessors, (4647), 1337 states have return successors, (13620), 4798 states have call predecessors, (13620), 4609 states have call successors, (13620) [2022-07-22 16:54:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29747 states to 29747 states and 55989 transitions. [2022-07-22 16:54:11,383 INFO L78 Accepts]: Start accepts. Automaton has 29747 states and 55989 transitions. Word has length 142 [2022-07-22 16:54:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:54:11,383 INFO L495 AbstractCegarLoop]: Abstraction has 29747 states and 55989 transitions. [2022-07-22 16:54:11,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:54:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 29747 states and 55989 transitions. [2022-07-22 16:54:11,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 16:54:11,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:54:11,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:54:11,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 16:54:11,389 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:54:11,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:54:11,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1650381038, now seen corresponding path program 1 times [2022-07-22 16:54:11,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:54:11,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359758103] [2022-07-22 16:54:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:54:11,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:54:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:54:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:54:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:54:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:54:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:54:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:54:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 16:54:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 16:54:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:54:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:54:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 16:54:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 16:54:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 16:54:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 16:54:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 16:54:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:54:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:54:11,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:54:11,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359758103] [2022-07-22 16:54:11,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359758103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:54:11,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:54:11,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 16:54:11,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319415275] [2022-07-22 16:54:11,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:54:11,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 16:54:11,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:54:11,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 16:54:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:54:11,683 INFO L87 Difference]: Start difference. First operand 29747 states and 55989 transitions. Second operand has 12 states, 11 states have (on average 9.0) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15)