./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product01.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_spec1_product01.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 a24bdc0807d94f83606acfe112db107808ae7409e0ad1ecc1d01e9704d0b4ece --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:57:41,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:57:41,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:57:41,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:57:41,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:57:41,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:57:41,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:57:41,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:57:41,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:57:41,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:57:41,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:57:41,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:57:41,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:57:41,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:57:41,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:57:41,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:57:41,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:57:41,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:57:41,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:57:41,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:57:41,238 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:57:41,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:57:41,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:57:41,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:57:41,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:57:41,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:57:41,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:57:41,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:57:41,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:57:41,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:57:41,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:57:41,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:57:41,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:57:41,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:57:41,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:57:41,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:57:41,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:57:41,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:57:41,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:57:41,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:57:41,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:57:41,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:57:41,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:57:41,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:57:41,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:57:41,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:57:41,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:57:41,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:57:41,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:57:41,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:57:41,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:57:41,330 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:57:41,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:57:41,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:57:41,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:57:41,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:57:41,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:57:41,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:57:41,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:57:41,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:57:41,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:57:41,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:57:41,333 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:57:41,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:57:41,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:57:41,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:57:41,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:57:41,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:57:41,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:57:41,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:57:41,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:57:41,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:57:41,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:57:41,335 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:57:41,335 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:57:41,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:57:41,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a24bdc0807d94f83606acfe112db107808ae7409e0ad1ecc1d01e9704d0b4ece [2022-07-22 16:57:41,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:57:41,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:57:41,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:57:41,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:57:41,564 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:57:41,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2022-07-22 16:57:41,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4497648e4/86ea8202606d43788541b589a32e8a01/FLAG3275674e7 [2022-07-22 16:57:42,186 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:57:42,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2022-07-22 16:57:42,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4497648e4/86ea8202606d43788541b589a32e8a01/FLAG3275674e7 [2022-07-22 16:57:42,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4497648e4/86ea8202606d43788541b589a32e8a01 [2022-07-22 16:57:42,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:57:42,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:57:42,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:57:42,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:57:42,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:57:42,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:57:42" (1/1) ... [2022-07-22 16:57:42,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e04eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:42, skipping insertion in model container [2022-07-22 16:57:42,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:57:42" (1/1) ... [2022-07-22 16:57:42,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:57:42,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:57:42,861 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_spec1_product01.cil.c[1545,1558] [2022-07-22 16:57:43,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:57:43,214 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:57:43,227 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_spec1_product01.cil.c[1545,1558] [2022-07-22 16:57:43,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:57:43,333 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:57:43,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43 WrapperNode [2022-07-22 16:57:43,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:57:43,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:57:43,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:57:43,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:57:43,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (1/1) ... [2022-07-22 16:57:43,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (1/1) ... [2022-07-22 16:57:43,433 INFO L137 Inliner]: procedures = 88, calls = 329, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 743 [2022-07-22 16:57:43,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:57:43,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:57:43,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:57:43,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:57:43,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (1/1) ... [2022-07-22 16:57:43,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (1/1) ... [2022-07-22 16:57:43,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (1/1) ... [2022-07-22 16:57:43,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (1/1) ... [2022-07-22 16:57:43,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (1/1) ... [2022-07-22 16:57:43,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (1/1) ... [2022-07-22 16:57:43,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (1/1) ... [2022-07-22 16:57:43,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:57:43,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:57:43,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:57:43,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:57:43,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (1/1) ... [2022-07-22 16:57:43,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:57:43,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:43,563 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 16:57:43,564 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 16:57:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-22 16:57:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-22 16:57:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:57:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-22 16:57:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-22 16:57:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 16:57:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 16:57:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 16:57:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 16:57:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 16:57:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 16:57:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 16:57:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 16:57:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 16:57:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 16:57:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-22 16:57:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-22 16:57:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-22 16:57:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-22 16:57:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 16:57:43,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 16:57:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 16:57:43,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 16:57:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 16:57:43,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 16:57:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 16:57:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 16:57:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 16:57:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 16:57:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 16:57:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 16:57:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 16:57:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 16:57:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 16:57:43,601 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 16:57:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:57:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 16:57:43,601 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 16:57:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 16:57:43,601 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 16:57:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 16:57:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 16:57:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:57:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:57:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 16:57:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 16:57:43,744 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:57:43,746 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:57:44,555 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:57:44,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:57:44,571 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 16:57:44,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:57:44 BoogieIcfgContainer [2022-07-22 16:57:44,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:57:44,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:57:44,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:57:44,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:57:44,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:57:42" (1/3) ... [2022-07-22 16:57:44,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53de6cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:57:44, skipping insertion in model container [2022-07-22 16:57:44,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:57:43" (2/3) ... [2022-07-22 16:57:44,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53de6cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:57:44, skipping insertion in model container [2022-07-22 16:57:44,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:57:44" (3/3) ... [2022-07-22 16:57:44,583 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product01.cil.c [2022-07-22 16:57:44,594 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:57:44,594 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:57:44,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:57:44,674 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@6e2f1bc1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ba6cd83 [2022-07-22 16:57:44,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:57:44,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 524 states, 412 states have (on average 1.7111650485436893) internal successors, (705), 433 states have internal predecessors, (705), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 16:57:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 16:57:44,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:44,724 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:57:44,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:44,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:44,737 INFO L85 PathProgramCache]: Analyzing trace with hash 775009711, now seen corresponding path program 1 times [2022-07-22 16:57:44,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:44,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130397961] [2022-07-22 16:57:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:44,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:57:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:57:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:57:45,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:45,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130397961] [2022-07-22 16:57:45,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130397961] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:45,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495043972] [2022-07-22 16:57:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:45,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:45,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:45,681 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 16:57:45,682 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 16:57:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 16:57:46,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:46,044 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 16:57:46,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:46,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495043972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:46,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:46,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-07-22 16:57:46,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726585423] [2022-07-22 16:57:46,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:46,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 16:57:46,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 16:57:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:57:46,085 INFO L87 Difference]: Start difference. First operand has 524 states, 412 states have (on average 1.7111650485436893) internal successors, (705), 433 states have internal predecessors, (705), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 16:57:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:46,145 INFO L93 Difference]: Finished difference Result 545 states and 913 transitions. [2022-07-22 16:57:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 16:57:46,147 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 97 [2022-07-22 16:57:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:46,177 INFO L225 Difference]: With dead ends: 545 [2022-07-22 16:57:46,177 INFO L226 Difference]: Without dead ends: 516 [2022-07-22 16:57:46,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:57:46,183 INFO L413 NwaCegarLoop]: 874 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, 874 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 16:57:46,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:57:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-07-22 16:57:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2022-07-22 16:57:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 406 states have (on average 1.70935960591133) internal successors, (694), 425 states have internal predecessors, (694), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 16:57:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 867 transitions. [2022-07-22 16:57:46,274 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 867 transitions. Word has length 97 [2022-07-22 16:57:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:46,276 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 867 transitions. [2022-07-22 16:57:46,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 16:57:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 867 transitions. [2022-07-22 16:57:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 16:57:46,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:46,283 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:57:46,312 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 16:57:46,508 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 16:57:46,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:46,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:46,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1728523875, now seen corresponding path program 1 times [2022-07-22 16:57:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:46,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063295598] [2022-07-22 16:57:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:46,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:57:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:57:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:46,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:47,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:57:47,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:47,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063295598] [2022-07-22 16:57:47,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063295598] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:47,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432833289] [2022-07-22 16:57:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:47,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:47,012 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 16:57:47,032 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 16:57:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:47,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:47,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:57:47,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:47,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432833289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:47,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:47,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:57:47,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550502241] [2022-07-22 16:57:47,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:47,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:47,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:47,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:47,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:47,411 INFO L87 Difference]: Start difference. First operand 516 states and 867 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:47,495 INFO L93 Difference]: Finished difference Result 1023 states and 1726 transitions. [2022-07-22 16:57:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:57:47,495 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-07-22 16:57:47,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:47,501 INFO L225 Difference]: With dead ends: 1023 [2022-07-22 16:57:47,501 INFO L226 Difference]: Without dead ends: 516 [2022-07-22 16:57:47,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:57:47,506 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 14 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:47,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2552 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:57:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-07-22 16:57:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2022-07-22 16:57:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 406 states have (on average 1.706896551724138) internal successors, (693), 425 states have internal predecessors, (693), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 16:57:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 866 transitions. [2022-07-22 16:57:47,563 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 866 transitions. Word has length 99 [2022-07-22 16:57:47,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:47,564 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 866 transitions. [2022-07-22 16:57:47,565 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:47,565 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 866 transitions. [2022-07-22 16:57:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 16:57:47,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:47,572 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:57:47,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:47,799 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 16:57:47,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:47,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash -826883435, now seen corresponding path program 1 times [2022-07-22 16:57:47,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:47,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141424268] [2022-07-22 16:57:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:47,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:48,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 16:57:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:57:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:48,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:48,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:57:48,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:48,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141424268] [2022-07-22 16:57:48,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141424268] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:48,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893798109] [2022-07-22 16:57:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:48,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:48,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:48,261 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 16:57:48,290 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 16:57:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:48,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:48,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:57:48,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:48,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893798109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:48,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:48,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:57:48,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632767491] [2022-07-22 16:57:48,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:48,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:48,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:48,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:48,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:48,634 INFO L87 Difference]: Start difference. First operand 516 states and 866 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:48,713 INFO L93 Difference]: Finished difference Result 1023 states and 1724 transitions. [2022-07-22 16:57:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:57:48,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2022-07-22 16:57:48,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:48,720 INFO L225 Difference]: With dead ends: 1023 [2022-07-22 16:57:48,720 INFO L226 Difference]: Without dead ends: 516 [2022-07-22 16:57:48,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:57:48,725 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 12 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:48,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2552 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:57:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-07-22 16:57:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2022-07-22 16:57:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 406 states have (on average 1.7044334975369457) internal successors, (692), 425 states have internal predecessors, (692), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 16:57:48,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 865 transitions. [2022-07-22 16:57:48,772 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 865 transitions. Word has length 101 [2022-07-22 16:57:48,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:48,772 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 865 transitions. [2022-07-22 16:57:48,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:48,775 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 865 transitions. [2022-07-22 16:57:48,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 16:57:48,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:48,783 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] [2022-07-22 16:57:48,814 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 16:57:49,013 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 16:57:49,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:49,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash 834246499, now seen corresponding path program 1 times [2022-07-22 16:57:49,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:49,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629679917] [2022-07-22 16:57:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:49,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:57:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:57:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:57:49,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629679917] [2022-07-22 16:57:49,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629679917] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:49,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843251181] [2022-07-22 16:57:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:49,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:49,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:49,371 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 16:57:49,410 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 16:57:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:49,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:49,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:57:49,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:49,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843251181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:49,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:49,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:57:49,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691317473] [2022-07-22 16:57:49,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:49,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:49,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:49,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:49,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:49,745 INFO L87 Difference]: Start difference. First operand 516 states and 865 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:49,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:49,817 INFO L93 Difference]: Finished difference Result 1030 states and 1731 transitions. [2022-07-22 16:57:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:49,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2022-07-22 16:57:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:49,822 INFO L225 Difference]: With dead ends: 1030 [2022-07-22 16:57:49,822 INFO L226 Difference]: Without dead ends: 525 [2022-07-22 16:57:49,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:57:49,827 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 20 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:49,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2552 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:57:49,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-07-22 16:57:49,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-07-22 16:57:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 414 states have (on average 1.7004830917874396) internal successors, (704), 433 states have internal predecessors, (704), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 16:57:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 877 transitions. [2022-07-22 16:57:49,852 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 877 transitions. Word has length 103 [2022-07-22 16:57:49,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:49,853 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 877 transitions. [2022-07-22 16:57:49,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:49,854 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 877 transitions. [2022-07-22 16:57:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 16:57:49,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:49,857 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:57:49,885 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 16:57:50,071 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 16:57:50,071 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1162426420, now seen corresponding path program 1 times [2022-07-22 16:57:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:50,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003992663] [2022-07-22 16:57:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:57:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 16:57:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:57:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:57:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003992663] [2022-07-22 16:57:50,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003992663] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257580485] [2022-07-22 16:57:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:50,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:50,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:50,444 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 16:57:50,446 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 16:57:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:50,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:50,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:57:50,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:50,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257580485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:50,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:50,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:57:50,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902021465] [2022-07-22 16:57:50,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:50,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:50,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:50,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:50,798 INFO L87 Difference]: Start difference. First operand 525 states and 877 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:50,854 INFO L93 Difference]: Finished difference Result 1032 states and 1732 transitions. [2022-07-22 16:57:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-07-22 16:57:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:50,858 INFO L225 Difference]: With dead ends: 1032 [2022-07-22 16:57:50,859 INFO L226 Difference]: Without dead ends: 525 [2022-07-22 16:57:50,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:57:50,862 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 18 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:50,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2552 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:57:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-07-22 16:57:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-07-22 16:57:50,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 414 states have (on average 1.6980676328502415) internal successors, (703), 433 states have internal predecessors, (703), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 16:57:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 876 transitions. [2022-07-22 16:57:50,878 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 876 transitions. Word has length 104 [2022-07-22 16:57:50,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:50,879 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 876 transitions. [2022-07-22 16:57:50,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:50,879 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 876 transitions. [2022-07-22 16:57:50,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 16:57:50,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:50,882 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:57:50,911 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 16:57:51,107 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 16:57:51,108 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:51,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:51,108 INFO L85 PathProgramCache]: Analyzing trace with hash -176244601, now seen corresponding path program 1 times [2022-07-22 16:57:51,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:51,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869084411] [2022-07-22 16:57:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:51,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 16:57:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:57:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:57:51,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:51,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869084411] [2022-07-22 16:57:51,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869084411] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:51,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109086867] [2022-07-22 16:57:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:51,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:51,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:51,481 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:51,488 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 16:57:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:51,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:51,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:57:51,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:51,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109086867] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:51,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:51,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:57:51,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736014101] [2022-07-22 16:57:51,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:51,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:51,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:51,797 INFO L87 Difference]: Start difference. First operand 525 states and 876 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:51,848 INFO L93 Difference]: Finished difference Result 1032 states and 1731 transitions. [2022-07-22 16:57:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-07-22 16:57:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:51,853 INFO L225 Difference]: With dead ends: 1032 [2022-07-22 16:57:51,853 INFO L226 Difference]: Without dead ends: 525 [2022-07-22 16:57:51,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:57:51,856 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 17 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2552 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 16:57:51,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2552 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:57:51,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-07-22 16:57:51,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-07-22 16:57:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 414 states have (on average 1.6956521739130435) internal successors, (702), 433 states have internal predecessors, (702), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 16:57:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 875 transitions. [2022-07-22 16:57:51,873 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 875 transitions. Word has length 105 [2022-07-22 16:57:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:51,873 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 875 transitions. [2022-07-22 16:57:51,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 875 transitions. [2022-07-22 16:57:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 16:57:51,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:51,876 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:57:51,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 16:57:52,095 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 16:57:52,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1210846416, now seen corresponding path program 1 times [2022-07-22 16:57:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:52,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799069339] [2022-07-22 16:57:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:57:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:57:52,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:52,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799069339] [2022-07-22 16:57:52,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799069339] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:52,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128083185] [2022-07-22 16:57:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:52,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:52,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:52,556 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 16:57:52,557 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 16:57:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:52,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:57:52,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:57:52,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:52,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128083185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:52,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:52,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-07-22 16:57:52,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627262074] [2022-07-22 16:57:52,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:52,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:57:52,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:52,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:57:52,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:57:52,928 INFO L87 Difference]: Start difference. First operand 525 states and 875 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:57:53,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:53,025 INFO L93 Difference]: Finished difference Result 1051 states and 1761 transitions. [2022-07-22 16:57:53,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:57:53,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-07-22 16:57:53,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:53,031 INFO L225 Difference]: With dead ends: 1051 [2022-07-22 16:57:53,032 INFO L226 Difference]: Without dead ends: 548 [2022-07-22 16:57:53,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:57:53,035 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 148 mSDsluCounter, 4157 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5011 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:53,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5011 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:53,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-07-22 16:57:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 544. [2022-07-22 16:57:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 430 states have (on average 1.6930232558139535) internal successors, (728), 451 states have internal predecessors, (728), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (88), 83 states have call predecessors, (88), 85 states have call successors, (88) [2022-07-22 16:57:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 906 transitions. [2022-07-22 16:57:53,053 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 906 transitions. Word has length 106 [2022-07-22 16:57:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:53,053 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 906 transitions. [2022-07-22 16:57:53,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:57:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 906 transitions. [2022-07-22 16:57:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 16:57:53,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:53,057 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:57:53,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:53,271 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 16:57:53,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:53,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1596213199, now seen corresponding path program 1 times [2022-07-22 16:57:53,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:53,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524917798] [2022-07-22 16:57:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:53,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:57:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 16:57:53,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:53,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524917798] [2022-07-22 16:57:53,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524917798] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:53,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646015600] [2022-07-22 16:57:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:53,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:53,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:53,640 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 16:57:53,641 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 16:57:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:53,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:53,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:57:53,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:53,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646015600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:53,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:53,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:57:53,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234805348] [2022-07-22 16:57:53,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:53,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:53,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:53,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:53,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:53,983 INFO L87 Difference]: Start difference. First operand 544 states and 906 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:54,082 INFO L93 Difference]: Finished difference Result 1092 states and 1835 transitions. [2022-07-22 16:57:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:57:54,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2022-07-22 16:57:54,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:54,087 INFO L225 Difference]: With dead ends: 1092 [2022-07-22 16:57:54,087 INFO L226 Difference]: Without dead ends: 544 [2022-07-22 16:57:54,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:57:54,090 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 135 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:54,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2369 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:54,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-07-22 16:57:54,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2022-07-22 16:57:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 430 states have (on average 1.6813953488372093) internal successors, (723), 451 states have internal predecessors, (723), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (88), 83 states have call predecessors, (88), 85 states have call successors, (88) [2022-07-22 16:57:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 901 transitions. [2022-07-22 16:57:54,107 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 901 transitions. Word has length 106 [2022-07-22 16:57:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:54,108 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 901 transitions. [2022-07-22 16:57:54,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 901 transitions. [2022-07-22 16:57:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 16:57:54,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:54,111 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] [2022-07-22 16:57:54,155 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 16:57:54,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-22 16:57:54,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:54,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1554473517, now seen corresponding path program 1 times [2022-07-22 16:57:54,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:54,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175899536] [2022-07-22 16:57:54,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:54,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 16:57:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:57:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 16:57:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:54,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175899536] [2022-07-22 16:57:54,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175899536] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:54,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145032488] [2022-07-22 16:57:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:54,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:54,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:54,693 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 16:57:54,727 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 16:57:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:55,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:57:55,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:55,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145032488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:55,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:55,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:57:55,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127019442] [2022-07-22 16:57:55,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:55,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:55,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:55,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:55,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:55,040 INFO L87 Difference]: Start difference. First operand 544 states and 901 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:55,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:55,137 INFO L93 Difference]: Finished difference Result 1092 states and 1825 transitions. [2022-07-22 16:57:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:57:55,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2022-07-22 16:57:55,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:55,142 INFO L225 Difference]: With dead ends: 1092 [2022-07-22 16:57:55,142 INFO L226 Difference]: Without dead ends: 544 [2022-07-22 16:57:55,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:57:55,146 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 129 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:55,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2369 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-07-22 16:57:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2022-07-22 16:57:55,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 430 states have (on average 1.669767441860465) internal successors, (718), 451 states have internal predecessors, (718), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (88), 83 states have call predecessors, (88), 85 states have call successors, (88) [2022-07-22 16:57:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 896 transitions. [2022-07-22 16:57:55,164 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 896 transitions. Word has length 108 [2022-07-22 16:57:55,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:55,164 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 896 transitions. [2022-07-22 16:57:55,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 896 transitions. [2022-07-22 16:57:55,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 16:57:55,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:55,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:55,195 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 16:57:55,391 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 16:57:55,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:55,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash -747741871, now seen corresponding path program 1 times [2022-07-22 16:57:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:55,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387447638] [2022-07-22 16:57:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:55,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 16:57:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:57:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 16:57:55,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:55,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387447638] [2022-07-22 16:57:55,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387447638] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:55,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907357758] [2022-07-22 16:57:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:55,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:55,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:55,752 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 16:57:55,759 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 16:57:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:56,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:57:56,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:56,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907357758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:56,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:56,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:57:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515109379] [2022-07-22 16:57:56,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:56,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:56,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:56,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:56,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:56,102 INFO L87 Difference]: Start difference. First operand 544 states and 896 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:56,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:56,238 INFO L93 Difference]: Finished difference Result 1128 states and 1873 transitions. [2022-07-22 16:57:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:56,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-07-22 16:57:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:56,242 INFO L225 Difference]: With dead ends: 1128 [2022-07-22 16:57:56,242 INFO L226 Difference]: Without dead ends: 610 [2022-07-22 16:57:56,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:57:56,245 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 179 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:56,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2379 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:56,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-07-22 16:57:56,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 595. [2022-07-22 16:57:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 480 states have (on average 1.6729166666666666) internal successors, (803), 501 states have internal predecessors, (803), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2022-07-22 16:57:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 980 transitions. [2022-07-22 16:57:56,264 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 980 transitions. Word has length 110 [2022-07-22 16:57:56,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:56,265 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 980 transitions. [2022-07-22 16:57:56,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:57:56,265 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 980 transitions. [2022-07-22 16:57:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:57:56,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:56,268 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:57:56,292 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 16:57:56,483 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 16:57:56,483 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:56,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:56,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1074440038, now seen corresponding path program 1 times [2022-07-22 16:57:56,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:56,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594613742] [2022-07-22 16:57:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:56,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:57:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:57:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 16:57:56,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594613742] [2022-07-22 16:57:56,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594613742] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821242076] [2022-07-22 16:57:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:56,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:56,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:56,877 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 16:57:56,920 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 16:57:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:57,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:57:57,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:57:57,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:57,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821242076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:57,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:57,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-22 16:57:57,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239064741] [2022-07-22 16:57:57,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:57,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:57:57,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:57,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:57:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:57:57,286 INFO L87 Difference]: Start difference. First operand 595 states and 980 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:57:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:57,433 INFO L93 Difference]: Finished difference Result 1120 states and 1853 transitions. [2022-07-22 16:57:57,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:57:57,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-07-22 16:57:57,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:57,438 INFO L225 Difference]: With dead ends: 1120 [2022-07-22 16:57:57,438 INFO L226 Difference]: Without dead ends: 617 [2022-07-22 16:57:57,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:57:57,441 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 177 mSDsluCounter, 4897 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5731 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:57,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5731 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-07-22 16:57:57,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 595. [2022-07-22 16:57:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 480 states have (on average 1.6729166666666666) internal successors, (803), 501 states have internal predecessors, (803), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2022-07-22 16:57:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 980 transitions. [2022-07-22 16:57:57,459 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 980 transitions. Word has length 111 [2022-07-22 16:57:57,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:57,459 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 980 transitions. [2022-07-22 16:57:57,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:57:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 980 transitions. [2022-07-22 16:57:57,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:57:57,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:57,462 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:57:57,494 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 16:57:57,683 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 16:57:57,683 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:57,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:57,683 INFO L85 PathProgramCache]: Analyzing trace with hash 264952581, now seen corresponding path program 1 times [2022-07-22 16:57:57,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:57,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565553169] [2022-07-22 16:57:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:57,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:57,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:57,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:57,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:57:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:57:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 16:57:58,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:58,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565553169] [2022-07-22 16:57:58,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565553169] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:58,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65301358] [2022-07-22 16:57:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:58,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:58,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:58,041 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 16:57:58,043 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 16:57:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:57:58,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:58,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:57:58,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:58,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65301358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:58,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:58,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-22 16:57:58,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596953948] [2022-07-22 16:57:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:58,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:57:58,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:58,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:57:58,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:58,418 INFO L87 Difference]: Start difference. First operand 595 states and 980 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:57:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:58,512 INFO L93 Difference]: Finished difference Result 1055 states and 1750 transitions. [2022-07-22 16:57:58,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:57:58,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-07-22 16:57:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:58,516 INFO L225 Difference]: With dead ends: 1055 [2022-07-22 16:57:58,516 INFO L226 Difference]: Without dead ends: 619 [2022-07-22 16:57:58,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:57:58,519 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 134 mSDsluCounter, 4124 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:58,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 4970 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-07-22 16:57:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 614. [2022-07-22 16:57:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 496 states have (on average 1.6713709677419355) internal successors, (829), 519 states have internal predecessors, (829), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-07-22 16:57:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1010 transitions. [2022-07-22 16:57:58,538 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1010 transitions. Word has length 111 [2022-07-22 16:57:58,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:58,538 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1010 transitions. [2022-07-22 16:57:58,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:57:58,539 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1010 transitions. [2022-07-22 16:57:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:57:58,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:58,542 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:57:58,568 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 16:57:58,765 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 16:57:58,765 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:58,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1444130015, now seen corresponding path program 1 times [2022-07-22 16:57:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:58,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303988239] [2022-07-22 16:57:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:57:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:57:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:57:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:57:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:57:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:57:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 16:57:59,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:59,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303988239] [2022-07-22 16:57:59,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303988239] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:59,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202428791] [2022-07-22 16:57:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:59,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:59,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:59,127 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 16:57:59,129 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 16:57:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:59,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:57:59,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:57:59,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:59,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202428791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:59,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:59,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-22 16:57:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691172652] [2022-07-22 16:57:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:59,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:57:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:59,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:57:59,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:59,519 INFO L87 Difference]: Start difference. First operand 614 states and 1010 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:57:59,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:59,609 INFO L93 Difference]: Finished difference Result 1085 states and 1801 transitions. [2022-07-22 16:57:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:57:59,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 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 16:57:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:59,613 INFO L225 Difference]: With dead ends: 1085 [2022-07-22 16:57:59,613 INFO L226 Difference]: Without dead ends: 649 [2022-07-22 16:57:59,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:57:59,616 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 143 mSDsluCounter, 4114 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 4960 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:59,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 4960 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-22 16:57:59,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 614. [2022-07-22 16:57:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 496 states have (on average 1.6713709677419355) internal successors, (829), 519 states have internal predecessors, (829), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-07-22 16:57:59,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1010 transitions. [2022-07-22 16:57:59,638 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1010 transitions. Word has length 112 [2022-07-22 16:57:59,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:59,638 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1010 transitions. [2022-07-22 16:57:59,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:57:59,638 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1010 transitions. [2022-07-22 16:57:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:57:59,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:59,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:59,667 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 16:57:59,867 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 16:57:59,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1512634017, now seen corresponding path program 1 times [2022-07-22 16:57:59,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:59,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564912617] [2022-07-22 16:57:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:59,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:58:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:58:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:58:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:58:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 16:58:00,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:00,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564912617] [2022-07-22 16:58:00,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564912617] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:00,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284687541] [2022-07-22 16:58:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:00,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:00,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:00,248 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 16:58:00,277 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 16:58:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:00,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:58:00,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:58:00,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:00,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284687541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:00,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:00,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-22 16:58:00,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107732224] [2022-07-22 16:58:00,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:00,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:58:00,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:58:00,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:58:00,641 INFO L87 Difference]: Start difference. First operand 614 states and 1010 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:58:00,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:00,800 INFO L93 Difference]: Finished difference Result 1070 states and 1775 transitions. [2022-07-22 16:58:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:58:00,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 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 16:58:00,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:00,804 INFO L225 Difference]: With dead ends: 1070 [2022-07-22 16:58:00,805 INFO L226 Difference]: Without dead ends: 634 [2022-07-22 16:58:00,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:58:00,807 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 177 mSDsluCounter, 4903 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5739 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:00,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5739 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-07-22 16:58:00,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 614. [2022-07-22 16:58:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 496 states have (on average 1.6713709677419355) internal successors, (829), 519 states have internal predecessors, (829), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-07-22 16:58:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1010 transitions. [2022-07-22 16:58:00,827 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1010 transitions. Word has length 112 [2022-07-22 16:58:00,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:00,828 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1010 transitions. [2022-07-22 16:58:00,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:58:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1010 transitions. [2022-07-22 16:58:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:58:00,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:00,831 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:58:00,857 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 16:58:01,057 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 16:58:01,057 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:01,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1594958174, now seen corresponding path program 1 times [2022-07-22 16:58:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:01,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224406757] [2022-07-22 16:58:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:01,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:58:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:58:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:58:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:58:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:58:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 16:58:01,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:01,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224406757] [2022-07-22 16:58:01,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224406757] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:01,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096248577] [2022-07-22 16:58:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:01,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:01,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:01,392 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 16:58:01,393 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 16:58:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:01,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:58:01,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 16:58:01,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:01,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096248577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:01,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:01,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:58:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099700613] [2022-07-22 16:58:01,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:01,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:01,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:58:01,661 INFO L87 Difference]: Start difference. First operand 614 states and 1010 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:58:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:01,701 INFO L93 Difference]: Finished difference Result 1122 states and 1860 transitions. [2022-07-22 16:58:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:58:01,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-07-22 16:58:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:01,705 INFO L225 Difference]: With dead ends: 1122 [2022-07-22 16:58:01,705 INFO L226 Difference]: Without dead ends: 614 [2022-07-22 16:58:01,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:01,707 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 23 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:01,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2521 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:58:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-07-22 16:58:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2022-07-22 16:58:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 496 states have (on average 1.6633064516129032) internal successors, (825), 519 states have internal predecessors, (825), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-07-22 16:58:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1006 transitions. [2022-07-22 16:58:01,725 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1006 transitions. Word has length 112 [2022-07-22 16:58:01,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:01,725 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1006 transitions. [2022-07-22 16:58:01,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:58:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1006 transitions. [2022-07-22 16:58:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 16:58:01,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:01,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:58:01,755 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 16:58:01,944 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 16:58:01,944 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:01,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:01,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1896184669, now seen corresponding path program 1 times [2022-07-22 16:58:01,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:01,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484251139] [2022-07-22 16:58:01,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:01,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:58:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:58:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:58:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:58:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 16:58:02,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:02,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484251139] [2022-07-22 16:58:02,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484251139] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:02,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702537893] [2022-07-22 16:58:02,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:02,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:02,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:02,308 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 16:58:02,316 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 16:58:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:02,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:58:02,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:58:02,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:02,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702537893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:02,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:02,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-22 16:58:02,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141407896] [2022-07-22 16:58:02,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:02,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:58:02,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:02,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:58:02,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:58:02,645 INFO L87 Difference]: Start difference. First operand 614 states and 1006 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:58:02,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:02,770 INFO L93 Difference]: Finished difference Result 1070 states and 1772 transitions. [2022-07-22 16:58:02,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:58:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 113 [2022-07-22 16:58:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:02,774 INFO L225 Difference]: With dead ends: 1070 [2022-07-22 16:58:02,774 INFO L226 Difference]: Without dead ends: 634 [2022-07-22 16:58:02,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:58:02,777 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 185 mSDsluCounter, 4866 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 5696 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:02,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 5696 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:02,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-07-22 16:58:02,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 614. [2022-07-22 16:58:02,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 496 states have (on average 1.6633064516129032) internal successors, (825), 519 states have internal predecessors, (825), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-07-22 16:58:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1006 transitions. [2022-07-22 16:58:02,795 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1006 transitions. Word has length 113 [2022-07-22 16:58:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:02,795 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1006 transitions. [2022-07-22 16:58:02,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:58:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1006 transitions. [2022-07-22 16:58:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 16:58:02,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:02,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:58:02,826 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 16:58:03,011 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 16:58:03,011 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:03,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:03,012 INFO L85 PathProgramCache]: Analyzing trace with hash -632622236, now seen corresponding path program 1 times [2022-07-22 16:58:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:03,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873740772] [2022-07-22 16:58:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:03,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:58:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:58:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:58:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 16:58:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873740772] [2022-07-22 16:58:03,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873740772] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466262483] [2022-07-22 16:58:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:03,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:03,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:03,332 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 16:58:03,340 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 16:58:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:03,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:58:03,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:58:03,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:03,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466262483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:03,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:03,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:58:03,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364010467] [2022-07-22 16:58:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:03,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:03,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:58:03,613 INFO L87 Difference]: Start difference. First operand 614 states and 1006 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:58:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:03,663 INFO L93 Difference]: Finished difference Result 1178 states and 1942 transitions. [2022-07-22 16:58:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:58:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-07-22 16:58:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:03,667 INFO L225 Difference]: With dead ends: 1178 [2022-07-22 16:58:03,667 INFO L226 Difference]: Without dead ends: 650 [2022-07-22 16:58:03,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:03,669 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 38 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:03,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2497 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:58:03,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-07-22 16:58:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 638. [2022-07-22 16:58:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 520 states have (on average 1.6403846153846153) internal successors, (853), 543 states have internal predecessors, (853), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-07-22 16:58:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1034 transitions. [2022-07-22 16:58:03,689 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1034 transitions. Word has length 114 [2022-07-22 16:58:03,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:03,689 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1034 transitions. [2022-07-22 16:58:03,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:58:03,690 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1034 transitions. [2022-07-22 16:58:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 16:58:03,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:03,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:58:03,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:03,918 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 16:58:03,918 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:03,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash -729426023, now seen corresponding path program 1 times [2022-07-22 16:58:03,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:03,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146947183] [2022-07-22 16:58:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:03,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:58:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:58:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:58:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:58:04,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:04,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146947183] [2022-07-22 16:58:04,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146947183] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:04,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712157519] [2022-07-22 16:58:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:04,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:04,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:04,248 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 16:58:04,251 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 16:58:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:04,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:58:04,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:58:04,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:04,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712157519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:04,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:04,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:58:04,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869386986] [2022-07-22 16:58:04,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:04,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:04,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:04,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:04,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:58:04,530 INFO L87 Difference]: Start difference. First operand 638 states and 1034 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:58:04,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:04,675 INFO L93 Difference]: Finished difference Result 1188 states and 1971 transitions. [2022-07-22 16:58:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:58:04,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-07-22 16:58:04,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:04,680 INFO L225 Difference]: With dead ends: 1188 [2022-07-22 16:58:04,681 INFO L226 Difference]: Without dead ends: 757 [2022-07-22 16:58:04,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:04,683 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 215 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:04,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2674 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:04,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-07-22 16:58:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 640. [2022-07-22 16:58:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 522 states have (on average 1.6379310344827587) internal successors, (855), 545 states have internal predecessors, (855), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-07-22 16:58:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1036 transitions. [2022-07-22 16:58:04,705 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1036 transitions. Word has length 114 [2022-07-22 16:58:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:04,705 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1036 transitions. [2022-07-22 16:58:04,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:58:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1036 transitions. [2022-07-22 16:58:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 16:58:04,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:04,708 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, 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 16:58:04,735 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 16:58:04,933 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 16:58:04,933 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:04,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:04,934 INFO L85 PathProgramCache]: Analyzing trace with hash 339157456, now seen corresponding path program 1 times [2022-07-22 16:58:04,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:04,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319109541] [2022-07-22 16:58:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:58:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:58:05,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:05,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319109541] [2022-07-22 16:58:05,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319109541] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:05,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749037053] [2022-07-22 16:58:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:05,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:05,244 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 16:58:05,266 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 16:58:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:05,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 16:58:05,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 16:58:05,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:05,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749037053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:05,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:05,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-07-22 16:58:05,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998675914] [2022-07-22 16:58:05,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:05,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:58:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:58:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:58:05,690 INFO L87 Difference]: Start difference. First operand 640 states and 1036 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 16:58:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:08,762 INFO L93 Difference]: Finished difference Result 1892 states and 3174 transitions. [2022-07-22 16:58:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 16:58:08,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 117 [2022-07-22 16:58:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:08,770 INFO L225 Difference]: With dead ends: 1892 [2022-07-22 16:58:08,770 INFO L226 Difference]: Without dead ends: 1459 [2022-07-22 16:58:08,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-07-22 16:58:08,772 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 3106 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 4851 mSolverCounterSat, 857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3223 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 5708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 4851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:08,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3223 Valid, 4983 Invalid, 5708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [857 Valid, 4851 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 16:58:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-07-22 16:58:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1294. [2022-07-22 16:58:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1024 states have (on average 1.63671875) internal successors, (1676), 1071 states have internal predecessors, (1676), 214 states have call successors, (214), 42 states have call predecessors, (214), 55 states have return successors, (247), 211 states have call predecessors, (247), 209 states have call successors, (247) [2022-07-22 16:58:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 2137 transitions. [2022-07-22 16:58:08,845 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 2137 transitions. Word has length 117 [2022-07-22 16:58:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:08,846 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 2137 transitions. [2022-07-22 16:58:08,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 16:58:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 2137 transitions. [2022-07-22 16:58:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 16:58:08,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:08,852 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, 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 16:58:08,879 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 16:58:09,067 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 16:58:09,067 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:09,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:09,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1318929787, now seen corresponding path program 1 times [2022-07-22 16:58:09,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:09,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658880963] [2022-07-22 16:58:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:09,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:58:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 16:58:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 16:58:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:58:09,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:09,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658880963] [2022-07-22 16:58:09,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658880963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:09,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256066077] [2022-07-22 16:58:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:09,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:09,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:09,431 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 16:58:09,433 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 16:58:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:09,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:58:09,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:58:09,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:09,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256066077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:09,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:09,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-22 16:58:09,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117760543] [2022-07-22 16:58:09,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:09,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:58:09,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:09,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:58:09,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:09,807 INFO L87 Difference]: Start difference. First operand 1294 states and 2137 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:58:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:10,171 INFO L93 Difference]: Finished difference Result 3197 states and 5413 transitions. [2022-07-22 16:58:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:58:10,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2022-07-22 16:58:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:10,185 INFO L225 Difference]: With dead ends: 3197 [2022-07-22 16:58:10,186 INFO L226 Difference]: Without dead ends: 2222 [2022-07-22 16:58:10,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:58:10,192 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 699 mSDsluCounter, 3289 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 4601 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:10,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 4601 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:58:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-07-22 16:58:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2203. [2022-07-22 16:58:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1715 states have (on average 1.643731778425656) internal successors, (2819), 1796 states have internal predecessors, (2819), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2022-07-22 16:58:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3676 transitions. [2022-07-22 16:58:10,275 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3676 transitions. Word has length 118 [2022-07-22 16:58:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:10,275 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 3676 transitions. [2022-07-22 16:58:10,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:58:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3676 transitions. [2022-07-22 16:58:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 16:58:10,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:10,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:10,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:10,513 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 16:58:10,514 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:10,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:10,514 INFO L85 PathProgramCache]: Analyzing trace with hash -777924206, now seen corresponding path program 1 times [2022-07-22 16:58:10,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:10,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971299583] [2022-07-22 16:58:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:58:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 16:58:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:58:10,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:10,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971299583] [2022-07-22 16:58:10,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971299583] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:10,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95689235] [2022-07-22 16:58:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:10,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:10,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:10,856 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 16:58:10,883 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 16:58:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:58:11,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:58:11,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:11,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95689235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:11,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:11,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-22 16:58:11,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090785416] [2022-07-22 16:58:11,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:11,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:11,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:11,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:11,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:58:11,173 INFO L87 Difference]: Start difference. First operand 2203 states and 3676 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:58:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:11,260 INFO L93 Difference]: Finished difference Result 4262 states and 7149 transitions. [2022-07-22 16:58:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:58:11,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 120 [2022-07-22 16:58:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:11,274 INFO L225 Difference]: With dead ends: 4262 [2022-07-22 16:58:11,274 INFO L226 Difference]: Without dead ends: 2257 [2022-07-22 16:58:11,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:58:11,284 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 39 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:11,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2494 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:58:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-07-22 16:58:11,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2224. [2022-07-22 16:58:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1735 states have (on average 1.6432276657060518) internal successors, (2851), 1817 states have internal predecessors, (2851), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-07-22 16:58:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3709 transitions. [2022-07-22 16:58:11,362 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3709 transitions. Word has length 120 [2022-07-22 16:58:11,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:11,363 INFO L495 AbstractCegarLoop]: Abstraction has 2224 states and 3709 transitions. [2022-07-22 16:58:11,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:58:11,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3709 transitions. [2022-07-22 16:58:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 16:58:11,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:11,371 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, 1, 1, 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 16:58:11,398 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 16:58:11,585 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 16:58:11,586 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:11,586 INFO L85 PathProgramCache]: Analyzing trace with hash -791330583, now seen corresponding path program 1 times [2022-07-22 16:58:11,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:11,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598021538] [2022-07-22 16:58:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:58:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:58:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:58:11,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:11,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598021538] [2022-07-22 16:58:11,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598021538] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:11,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85203528] [2022-07-22 16:58:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:11,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:11,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:11,956 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 16:58:12,020 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 16:58:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:12,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 16:58:12,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:58:12,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:12,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85203528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:12,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:12,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-07-22 16:58:12,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444986790] [2022-07-22 16:58:12,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:12,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:58:12,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:12,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:58:12,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:58:12,326 INFO L87 Difference]: Start difference. First operand 2224 states and 3709 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:58:12,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:12,470 INFO L93 Difference]: Finished difference Result 4192 states and 7029 transitions. [2022-07-22 16:58:12,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:58:12,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2022-07-22 16:58:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:12,485 INFO L225 Difference]: With dead ends: 4192 [2022-07-22 16:58:12,486 INFO L226 Difference]: Without dead ends: 2297 [2022-07-22 16:58:12,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-22 16:58:12,495 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 175 mSDsluCounter, 4876 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 5706 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:12,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 5706 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-07-22 16:58:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2224. [2022-07-22 16:58:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1735 states have (on average 1.6426512968299711) internal successors, (2850), 1817 states have internal predecessors, (2850), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-07-22 16:58:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3708 transitions. [2022-07-22 16:58:12,570 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3708 transitions. Word has length 121 [2022-07-22 16:58:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:12,570 INFO L495 AbstractCegarLoop]: Abstraction has 2224 states and 3708 transitions. [2022-07-22 16:58:12,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:58:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3708 transitions. [2022-07-22 16:58:12,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 16:58:12,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:12,579 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, 1, 1, 1, 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 16:58:12,609 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 16:58:12,795 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 16:58:12,795 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1370093547, now seen corresponding path program 1 times [2022-07-22 16:58:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:12,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925277509] [2022-07-22 16:58:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:12,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:12,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:12,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:12,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:58:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:58:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:58:13,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:13,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925277509] [2022-07-22 16:58:13,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925277509] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:13,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447930217] [2022-07-22 16:58:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:13,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:13,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:13,174 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:58:13,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-22 16:58:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:13,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:58:13,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 16:58:13,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:13,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447930217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:13,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:13,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-07-22 16:58:13,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319756167] [2022-07-22 16:58:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:13,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:58:13,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:13,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:58:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:58:13,550 INFO L87 Difference]: Start difference. First operand 2224 states and 3708 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 16:58:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:13,837 INFO L93 Difference]: Finished difference Result 2437 states and 4062 transitions. [2022-07-22 16:58:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:58:13,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 121 [2022-07-22 16:58:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:13,853 INFO L225 Difference]: With dead ends: 2437 [2022-07-22 16:58:13,853 INFO L226 Difference]: Without dead ends: 2420 [2022-07-22 16:58:13,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:58:13,855 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 830 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:13,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1524 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 16:58:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2022-07-22 16:58:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2242. [2022-07-22 16:58:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 1753 states have (on average 1.6360524814603536) internal successors, (2868), 1835 states have internal predecessors, (2868), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-07-22 16:58:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3726 transitions. [2022-07-22 16:58:13,977 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3726 transitions. Word has length 121 [2022-07-22 16:58:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:13,978 INFO L495 AbstractCegarLoop]: Abstraction has 2242 states and 3726 transitions. [2022-07-22 16:58:13,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 16:58:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3726 transitions. [2022-07-22 16:58:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 16:58:13,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:13,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:14,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:14,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:14,207 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:14,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash -798145562, now seen corresponding path program 1 times [2022-07-22 16:58:14,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:14,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084691768] [2022-07-22 16:58:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:14,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:58:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:58:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:58:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:58:14,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:14,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084691768] [2022-07-22 16:58:14,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084691768] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:14,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154094032] [2022-07-22 16:58:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:14,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:14,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:14,596 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:58:14,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-22 16:58:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:14,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:58:14,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 16:58:14,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:14,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154094032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:14,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:14,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 16:58:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553733336] [2022-07-22 16:58:14,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:14,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:58:14,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:14,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:58:14,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:58:14,888 INFO L87 Difference]: Start difference. First operand 2242 states and 3726 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-22 16:58:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:14,948 INFO L93 Difference]: Finished difference Result 2271 states and 3764 transitions. [2022-07-22 16:58:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:58:14,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 127 [2022-07-22 16:58:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:14,971 INFO L225 Difference]: With dead ends: 2271 [2022-07-22 16:58:14,971 INFO L226 Difference]: Without dead ends: 2254 [2022-07-22 16:58:14,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:58:14,974 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 37 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:14,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3370 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:58:14,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2022-07-22 16:58:15,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2242. [2022-07-22 16:58:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 1753 states have (on average 1.6326297775242442) internal successors, (2862), 1835 states have internal predecessors, (2862), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-07-22 16:58:15,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3720 transitions. [2022-07-22 16:58:15,097 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3720 transitions. Word has length 127 [2022-07-22 16:58:15,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:15,097 INFO L495 AbstractCegarLoop]: Abstraction has 2242 states and 3720 transitions. [2022-07-22 16:58:15,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-22 16:58:15,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3720 transitions. [2022-07-22 16:58:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 16:58:15,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:15,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:15,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:15,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:15,330 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:15,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:15,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1519715146, now seen corresponding path program 1 times [2022-07-22 16:58:15,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:15,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994312763] [2022-07-22 16:58:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:15,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:58:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:58:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:58:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:58:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 16:58:15,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:15,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994312763] [2022-07-22 16:58:15,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994312763] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:15,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701052065] [2022-07-22 16:58:15,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:15,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:15,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:15,699 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:58:15,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-22 16:58:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:15,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1846 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 16:58:15,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:58:15,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:15,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701052065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:15,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:15,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 14 [2022-07-22 16:58:15,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203268242] [2022-07-22 16:58:15,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:15,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:58:15,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:15,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:58:15,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:58:15,996 INFO L87 Difference]: Start difference. First operand 2242 states and 3720 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 16:58:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:16,126 INFO L93 Difference]: Finished difference Result 4342 states and 7231 transitions. [2022-07-22 16:58:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:58:16,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 138 [2022-07-22 16:58:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:16,165 INFO L225 Difference]: With dead ends: 4342 [2022-07-22 16:58:16,166 INFO L226 Difference]: Without dead ends: 2325 [2022-07-22 16:58:16,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:58:16,176 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 167 mSDsluCounter, 4072 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 4912 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:16,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 4912 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:58:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2022-07-22 16:58:16,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2242. [2022-07-22 16:58:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 1753 states have (on average 1.6326297775242442) internal successors, (2862), 1835 states have internal predecessors, (2862), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-07-22 16:58:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3720 transitions. [2022-07-22 16:58:16,254 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3720 transitions. Word has length 138 [2022-07-22 16:58:16,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:16,255 INFO L495 AbstractCegarLoop]: Abstraction has 2242 states and 3720 transitions. [2022-07-22 16:58:16,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 16:58:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3720 transitions. [2022-07-22 16:58:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 16:58:16,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:16,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:16,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:16,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-22 16:58:16,483 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:16,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:16,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1823731078, now seen corresponding path program 1 times [2022-07-22 16:58:16,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:16,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864393124] [2022-07-22 16:58:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:16,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:58:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:58:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:58:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:58:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:58:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:58:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 16:58:16,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:16,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864393124] [2022-07-22 16:58:16,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864393124] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:16,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130527633] [2022-07-22 16:58:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:16,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:16,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:16,835 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:58:16,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-22 16:58:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:58:17,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:58:17,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:17,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130527633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:17,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:17,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:58:17,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34909187] [2022-07-22 16:58:17,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:17,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:17,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:17,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:17,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:58:17,175 INFO L87 Difference]: Start difference. First operand 2242 states and 3720 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:17,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:17,304 INFO L93 Difference]: Finished difference Result 4346 states and 7242 transitions. [2022-07-22 16:58:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:58:17,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2022-07-22 16:58:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:17,322 INFO L225 Difference]: With dead ends: 4346 [2022-07-22 16:58:17,323 INFO L226 Difference]: Without dead ends: 2072 [2022-07-22 16:58:17,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:17,329 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 11 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:17,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2520 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:58:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-07-22 16:58:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-07-22 16:58:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1598 states have (on average 1.6376720901126407) internal successors, (2617), 1674 states have internal predecessors, (2617), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2022-07-22 16:58:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3456 transitions. [2022-07-22 16:58:17,403 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3456 transitions. Word has length 138 [2022-07-22 16:58:17,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:17,403 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 3456 transitions. [2022-07-22 16:58:17,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:17,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3456 transitions. [2022-07-22 16:58:17,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 16:58:17,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:17,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:17,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:17,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-22 16:58:17,627 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:17,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash 641853903, now seen corresponding path program 1 times [2022-07-22 16:58:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:17,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244169496] [2022-07-22 16:58:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 16:58:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 16:58:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:58:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:58:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:58:17,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:17,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244169496] [2022-07-22 16:58:17,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244169496] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:17,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69838054] [2022-07-22 16:58:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:17,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:17,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:17,984 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:58:17,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-22 16:58:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:18,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:58:18,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:58:18,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:18,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69838054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:18,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:18,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:58:18,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682079105] [2022-07-22 16:58:18,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:18,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:18,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:18,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:18,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:58:18,259 INFO L87 Difference]: Start difference. First operand 2072 states and 3456 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:18,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:18,395 INFO L93 Difference]: Finished difference Result 4113 states and 6877 transitions. [2022-07-22 16:58:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:58:18,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 139 [2022-07-22 16:58:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:18,407 INFO L225 Difference]: With dead ends: 4113 [2022-07-22 16:58:18,407 INFO L226 Difference]: Without dead ends: 2072 [2022-07-22 16:58:18,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:18,414 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 177 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:18,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2353 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:58:18,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-07-22 16:58:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-07-22 16:58:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1598 states have (on average 1.637046307884856) internal successors, (2616), 1674 states have internal predecessors, (2616), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2022-07-22 16:58:18,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3455 transitions. [2022-07-22 16:58:18,500 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3455 transitions. Word has length 139 [2022-07-22 16:58:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:18,502 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 3455 transitions. [2022-07-22 16:58:18,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:18,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3455 transitions. [2022-07-22 16:58:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 16:58:18,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:18,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:18,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:18,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 16:58:18,727 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:18,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1043081883, now seen corresponding path program 1 times [2022-07-22 16:58:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:18,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958060058] [2022-07-22 16:58:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:18,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:18,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:58:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:18,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 16:58:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:58:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:58:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:58:19,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:19,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958060058] [2022-07-22 16:58:19,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958060058] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:19,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818975579] [2022-07-22 16:58:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:19,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:19,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:19,030 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:58:19,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-22 16:58:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:58:19,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:58:19,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:19,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818975579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:19,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:19,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:58:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363893920] [2022-07-22 16:58:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:19,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:19,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:19,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:19,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:58:19,289 INFO L87 Difference]: Start difference. First operand 2072 states and 3455 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:19,422 INFO L93 Difference]: Finished difference Result 4113 states and 6876 transitions. [2022-07-22 16:58:19,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:58:19,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 140 [2022-07-22 16:58:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:19,434 INFO L225 Difference]: With dead ends: 4113 [2022-07-22 16:58:19,434 INFO L226 Difference]: Without dead ends: 2072 [2022-07-22 16:58:19,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:19,441 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 176 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:19,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2353 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:19,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-07-22 16:58:19,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-07-22 16:58:19,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1598 states have (on average 1.6364205256570714) internal successors, (2615), 1674 states have internal predecessors, (2615), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2022-07-22 16:58:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3454 transitions. [2022-07-22 16:58:19,535 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3454 transitions. Word has length 140 [2022-07-22 16:58:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:19,536 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 3454 transitions. [2022-07-22 16:58:19,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:19,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3454 transitions. [2022-07-22 16:58:19,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-22 16:58:19,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:19,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:19,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:19,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-22 16:58:19,751 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:19,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash -874555626, now seen corresponding path program 1 times [2022-07-22 16:58:19,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:19,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012001650] [2022-07-22 16:58:19,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:19,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:19,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:58:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:58:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:58:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:58:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:20,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012001650] [2022-07-22 16:58:20,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012001650] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:20,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813691538] [2022-07-22 16:58:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:20,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:20,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:20,063 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:58:20,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-22 16:58:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:58:20,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:58:20,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:20,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813691538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:20,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:20,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-22 16:58:20,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883404612] [2022-07-22 16:58:20,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:20,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:20,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:20,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:20,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:58:20,329 INFO L87 Difference]: Start difference. First operand 2072 states and 3454 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:20,455 INFO L93 Difference]: Finished difference Result 4113 states and 6881 transitions. [2022-07-22 16:58:20,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:58:20,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 141 [2022-07-22 16:58:20,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:20,466 INFO L225 Difference]: With dead ends: 4113 [2022-07-22 16:58:20,466 INFO L226 Difference]: Without dead ends: 2072 [2022-07-22 16:58:20,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 16:58:20,474 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 166 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:20,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2353 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:20,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-07-22 16:58:20,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-07-22 16:58:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1598 states have (on average 1.6326658322903629) internal successors, (2609), 1674 states have internal predecessors, (2609), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2022-07-22 16:58:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3448 transitions. [2022-07-22 16:58:20,579 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3448 transitions. Word has length 141 [2022-07-22 16:58:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:20,580 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 3448 transitions. [2022-07-22 16:58:20,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3448 transitions. [2022-07-22 16:58:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-22 16:58:20,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:20,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:20,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:20,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-22 16:58:20,804 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:20,804 INFO L85 PathProgramCache]: Analyzing trace with hash 772807316, now seen corresponding path program 1 times [2022-07-22 16:58:20,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:20,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716514229] [2022-07-22 16:58:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:20,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:20,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:58:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:21,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:58:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:58:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:58:21,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:21,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716514229] [2022-07-22 16:58:21,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716514229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:21,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:58:21,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 16:58:21,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87883462] [2022-07-22 16:58:21,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:21,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 16:58:21,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:21,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 16:58:21,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:21,125 INFO L87 Difference]: Start difference. First operand 2072 states and 3448 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:26,540 INFO L93 Difference]: Finished difference Result 5413 states and 9442 transitions. [2022-07-22 16:58:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 16:58:26,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 141 [2022-07-22 16:58:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:26,558 INFO L225 Difference]: With dead ends: 5413 [2022-07-22 16:58:26,558 INFO L226 Difference]: Without dead ends: 3387 [2022-07-22 16:58:26,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2022-07-22 16:58:26,566 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 1882 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 4752 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 3751 SdHoareTripleChecker+Invalid, 5308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 4752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:26,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 3751 Invalid, 5308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 4752 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 16:58:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2022-07-22 16:58:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2152. [2022-07-22 16:58:26,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 1662 states have (on average 1.6263537906137184) internal successors, (2703), 1738 states have internal predecessors, (2703), 398 states have call successors, (398), 73 states have call predecessors, (398), 91 states have return successors, (478), 400 states have call predecessors, (478), 393 states have call successors, (478) [2022-07-22 16:58:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3579 transitions. [2022-07-22 16:58:26,789 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3579 transitions. Word has length 141 [2022-07-22 16:58:26,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:26,789 INFO L495 AbstractCegarLoop]: Abstraction has 2152 states and 3579 transitions. [2022-07-22 16:58:26,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3579 transitions. [2022-07-22 16:58:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 16:58:26,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:26,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:58:26,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 16:58:26,797 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:26,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1425603474, now seen corresponding path program 1 times [2022-07-22 16:58:26,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:26,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542546063] [2022-07-22 16:58:26,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:26,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:26,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:26,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:27,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 16:58:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:27,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 16:58:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:58:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:27,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:58:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:27,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:58:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:27,139 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 16:58:27,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:27,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542546063] [2022-07-22 16:58:27,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542546063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:27,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:58:27,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 16:58:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966962925] [2022-07-22 16:58:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:58:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:58:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:58:27,140 INFO L87 Difference]: Start difference. First operand 2152 states and 3579 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:31,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:31,196 INFO L93 Difference]: Finished difference Result 3624 states and 6111 transitions. [2022-07-22 16:58:31,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:58:31,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 145 [2022-07-22 16:58:31,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:31,203 INFO L225 Difference]: With dead ends: 3624 [2022-07-22 16:58:31,203 INFO L226 Difference]: Without dead ends: 1486 [2022-07-22 16:58:31,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:58:31,209 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 1305 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:31,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2186 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-22 16:58:31,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-07-22 16:58:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 991. [2022-07-22 16:58:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 785 states have (on average 1.6191082802547772) internal successors, (1271), 818 states have internal predecessors, (1271), 163 states have call successors, (163), 40 states have call predecessors, (163), 42 states have return successors, (175), 157 states have call predecessors, (175), 158 states have call successors, (175) [2022-07-22 16:58:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1609 transitions. [2022-07-22 16:58:31,319 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1609 transitions. Word has length 145 [2022-07-22 16:58:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:31,320 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1609 transitions. [2022-07-22 16:58:31,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1609 transitions. [2022-07-22 16:58:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 16:58:31,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:31,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:31,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 16:58:31,324 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1986822718, now seen corresponding path program 1 times [2022-07-22 16:58:31,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:31,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488137062] [2022-07-22 16:58:31,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:31,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:58:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:58:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:58:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:58:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:58:31,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:31,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488137062] [2022-07-22 16:58:31,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488137062] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:31,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852009236] [2022-07-22 16:58:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:31,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:31,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:31,659 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:58:31,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-22 16:58:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:31,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 16:58:31,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:58:31,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:31,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852009236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:31,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:31,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-07-22 16:58:31,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903389387] [2022-07-22 16:58:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:31,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:58:31,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:31,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:58:31,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:31,921 INFO L87 Difference]: Start difference. First operand 991 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:32,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:32,127 INFO L93 Difference]: Finished difference Result 2607 states and 4327 transitions. [2022-07-22 16:58:32,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:58:32,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 146 [2022-07-22 16:58:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:32,151 INFO L225 Difference]: With dead ends: 2607 [2022-07-22 16:58:32,152 INFO L226 Difference]: Without dead ends: 1733 [2022-07-22 16:58:32,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:32,155 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 760 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:32,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1626 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2022-07-22 16:58:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1718. [2022-07-22 16:58:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1345 states have (on average 1.620817843866171) internal successors, (2180), 1403 states have internal predecessors, (2180), 298 states have call successors, (298), 72 states have call predecessors, (298), 74 states have return successors, (331), 291 states have call predecessors, (331), 293 states have call successors, (331) [2022-07-22 16:58:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2809 transitions. [2022-07-22 16:58:32,343 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2809 transitions. Word has length 146 [2022-07-22 16:58:32,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:32,343 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2809 transitions. [2022-07-22 16:58:32,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:58:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2809 transitions. [2022-07-22 16:58:32,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-22 16:58:32,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:32,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:32,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:32,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-22 16:58:32,571 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2123355544, now seen corresponding path program 1 times [2022-07-22 16:58:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:32,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635093251] [2022-07-22 16:58:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:32,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:58:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:58:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:58:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:58:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:58:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:58:32,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:32,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635093251] [2022-07-22 16:58:32,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635093251] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:32,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94129245] [2022-07-22 16:58:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:32,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:32,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:32,919 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:58:32,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-22 16:58:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:33,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 1880 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 16:58:33,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:58:33,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:33,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94129245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:33,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:33,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2022-07-22 16:58:33,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203893403] [2022-07-22 16:58:33,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:33,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:58:33,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:58:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:58:33,251 INFO L87 Difference]: Start difference. First operand 1718 states and 2809 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:58:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:33,703 INFO L93 Difference]: Finished difference Result 4779 states and 7951 transitions. [2022-07-22 16:58:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:58:33,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 151 [2022-07-22 16:58:33,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:33,719 INFO L225 Difference]: With dead ends: 4779 [2022-07-22 16:58:33,719 INFO L226 Difference]: Without dead ends: 3191 [2022-07-22 16:58:33,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:58:33,725 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 821 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:33,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1472 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:33,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2022-07-22 16:58:33,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3173. [2022-07-22 16:58:33,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 2466 states have (on average 1.6346309813463098) internal successors, (4031), 2578 states have internal predecessors, (4031), 568 states have call successors, (568), 136 states have call predecessors, (568), 138 states have return successors, (656), 556 states have call predecessors, (656), 563 states have call successors, (656) [2022-07-22 16:58:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 5255 transitions. [2022-07-22 16:58:33,995 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 5255 transitions. Word has length 151 [2022-07-22 16:58:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:33,996 INFO L495 AbstractCegarLoop]: Abstraction has 3173 states and 5255 transitions. [2022-07-22 16:58:33,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:58:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 5255 transitions. [2022-07-22 16:58:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 16:58:33,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:33,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:34,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-07-22 16:58:34,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:34,223 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:34,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:34,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1499051412, now seen corresponding path program 1 times [2022-07-22 16:58:34,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:34,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280097519] [2022-07-22 16:58:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:34,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:58:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:58:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:58:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:58:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:58:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 16:58:34,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:34,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280097519] [2022-07-22 16:58:34,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280097519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:34,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:58:34,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 16:58:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259032122] [2022-07-22 16:58:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 16:58:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 16:58:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:58:34,651 INFO L87 Difference]: Start difference. First operand 3173 states and 5255 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:58:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:39,858 INFO L93 Difference]: Finished difference Result 6930 states and 12038 transitions. [2022-07-22 16:58:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 16:58:39,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 154 [2022-07-22 16:58:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:39,883 INFO L225 Difference]: With dead ends: 6930 [2022-07-22 16:58:39,883 INFO L226 Difference]: Without dead ends: 4400 [2022-07-22 16:58:39,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:58:39,895 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 1783 mSDsluCounter, 3046 mSDsCounter, 0 mSdLazyCounter, 5053 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 3914 SdHoareTripleChecker+Invalid, 5523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 5053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:39,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 3914 Invalid, 5523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 5053 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-22 16:58:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2022-07-22 16:58:40,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 3233. [2022-07-22 16:58:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3233 states, 2514 states have (on average 1.6276849642004774) internal successors, (4092), 2626 states have internal predecessors, (4092), 578 states have call successors, (578), 136 states have call predecessors, (578), 140 states have return successors, (670), 566 states have call predecessors, (670), 573 states have call successors, (670) [2022-07-22 16:58:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 5340 transitions. [2022-07-22 16:58:40,315 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 5340 transitions. Word has length 154 [2022-07-22 16:58:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:40,315 INFO L495 AbstractCegarLoop]: Abstraction has 3233 states and 5340 transitions. [2022-07-22 16:58:40,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:58:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 5340 transitions. [2022-07-22 16:58:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 16:58:40,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:40,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:40,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 16:58:40,319 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:40,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1899588620, now seen corresponding path program 1 times [2022-07-22 16:58:40,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:40,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139207873] [2022-07-22 16:58:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:40,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:58:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:58:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:58:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 16:58:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:58:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:58:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 16:58:40,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:40,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139207873] [2022-07-22 16:58:40,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139207873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:40,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:58:40,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 16:58:40,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545613161] [2022-07-22 16:58:40,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:40,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 16:58:40,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:40,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 16:58:40,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:58:40,729 INFO L87 Difference]: Start difference. First operand 3233 states and 5340 transitions. Second operand has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 16:58:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:52,048 INFO L93 Difference]: Finished difference Result 8657 states and 15472 transitions. [2022-07-22 16:58:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 16:58:52,048 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 156 [2022-07-22 16:58:52,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:52,081 INFO L225 Difference]: With dead ends: 8657 [2022-07-22 16:58:52,081 INFO L226 Difference]: Without dead ends: 6200 [2022-07-22 16:58:52,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 16:58:52,092 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 3471 mSDsluCounter, 3281 mSDsCounter, 0 mSdLazyCounter, 6880 mSolverCounterSat, 1278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3531 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 8158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1278 IncrementalHoareTripleChecker+Valid, 6880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:52,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3531 Valid, 4211 Invalid, 8158 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1278 Valid, 6880 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-07-22 16:58:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2022-07-22 16:58:52,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 4280. [2022-07-22 16:58:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 3324 states have (on average 1.6161251504211793) internal successors, (5372), 3481 states have internal predecessors, (5372), 747 states have call successors, (747), 181 states have call predecessors, (747), 208 states have return successors, (951), 737 states have call predecessors, (951), 742 states have call successors, (951) [2022-07-22 16:58:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 7070 transitions. [2022-07-22 16:58:52,659 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 7070 transitions. Word has length 156 [2022-07-22 16:58:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:52,659 INFO L495 AbstractCegarLoop]: Abstraction has 4280 states and 7070 transitions. [2022-07-22 16:58:52,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 16:58:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 7070 transitions. [2022-07-22 16:58:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-22 16:58:52,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:52,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:58:52,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 16:58:52,663 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash -609607598, now seen corresponding path program 1 times [2022-07-22 16:58:52,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:52,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326335213] [2022-07-22 16:58:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:52,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:52,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:52,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:52,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:52,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:52,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:58:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:52,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:52,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:52,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:53,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:58:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:53,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:58:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:53,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:58:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:53,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 16:58:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:58:53,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:53,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326335213] [2022-07-22 16:58:53,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326335213] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:58:53,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735299542] [2022-07-22 16:58:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:53,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:53,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:58:53,041 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:58:53,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-22 16:58:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:53,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:58:53,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:58:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:58:53,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:58:53,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735299542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:53,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:58:53,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-22 16:58:53,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553254117] [2022-07-22 16:58:53,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:53,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:58:53,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:53,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:58:53,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:58:53,319 INFO L87 Difference]: Start difference. First operand 4280 states and 7070 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:58:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:58:53,784 INFO L93 Difference]: Finished difference Result 8492 states and 14266 transitions. [2022-07-22 16:58:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:58:53,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 158 [2022-07-22 16:58:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:58:53,802 INFO L225 Difference]: With dead ends: 8492 [2022-07-22 16:58:53,802 INFO L226 Difference]: Without dead ends: 4330 [2022-07-22 16:58:53,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:58:53,815 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 22 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:58:53,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2353 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:58:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2022-07-22 16:58:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 4330. [2022-07-22 16:58:54,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 3364 states have (on average 1.6055291319857312) internal successors, (5401), 3526 states have internal predecessors, (5401), 747 states have call successors, (747), 186 states have call predecessors, (747), 218 states have return successors, (961), 737 states have call predecessors, (961), 742 states have call successors, (961) [2022-07-22 16:58:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 7109 transitions. [2022-07-22 16:58:54,340 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 7109 transitions. Word has length 158 [2022-07-22 16:58:54,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:58:54,340 INFO L495 AbstractCegarLoop]: Abstraction has 4330 states and 7109 transitions. [2022-07-22 16:58:54,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 16:58:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 7109 transitions. [2022-07-22 16:58:54,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 16:58:54,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:58:54,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:58:54,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-07-22 16:58:54,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:58:54,543 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:58:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:58:54,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1909879435, now seen corresponding path program 1 times [2022-07-22 16:58:54,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:58:54,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767484112] [2022-07-22 16:58:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:58:54,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:58:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:58:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:58:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:58:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:58:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:58:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:58:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:58:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:58:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:58:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:58:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:58:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:58:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:58:54,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:58:54,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767484112] [2022-07-22 16:58:54,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767484112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:58:54,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:58:54,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 16:58:54,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130846850] [2022-07-22 16:58:54,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:58:54,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 16:58:54,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:58:54,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 16:58:54,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:58:54,927 INFO L87 Difference]: Start difference. First operand 4330 states and 7109 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 16:59:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:04,621 INFO L93 Difference]: Finished difference Result 9867 states and 17012 transitions. [2022-07-22 16:59:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 16:59:04,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 159 [2022-07-22 16:59:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:04,648 INFO L225 Difference]: With dead ends: 9867 [2022-07-22 16:59:04,648 INFO L226 Difference]: Without dead ends: 6317 [2022-07-22 16:59:04,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-07-22 16:59:04,659 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 4114 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 5590 mSolverCounterSat, 1410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 7000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1410 IncrementalHoareTripleChecker+Valid, 5590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:04,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4172 Valid, 3239 Invalid, 7000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1410 Valid, 5590 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-07-22 16:59:04,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2022-07-22 16:59:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 4691. [2022-07-22 16:59:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 3657 states have (on average 1.5849056603773586) internal successors, (5796), 3818 states have internal predecessors, (5796), 786 states have call successors, (786), 219 states have call predecessors, (786), 247 states have return successors, (1019), 773 states have call predecessors, (1019), 781 states have call successors, (1019) [2022-07-22 16:59:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 7601 transitions. [2022-07-22 16:59:05,276 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 7601 transitions. Word has length 159 [2022-07-22 16:59:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:05,276 INFO L495 AbstractCegarLoop]: Abstraction has 4691 states and 7601 transitions. [2022-07-22 16:59:05,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 16:59:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 7601 transitions. [2022-07-22 16:59:05,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 16:59:05,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:05,279 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:05,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-22 16:59:05,279 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:05,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2083788287, now seen corresponding path program 1 times [2022-07-22 16:59:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:05,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101090744] [2022-07-22 16:59:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:05,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:59:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:59:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:59:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 16:59:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 16:59:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 16:59:05,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:05,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101090744] [2022-07-22 16:59:05,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101090744] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:05,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272452738] [2022-07-22 16:59:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:05,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:05,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:05,756 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:59:05,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-22 16:59:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:06,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-22 16:59:06,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 16:59:06,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:06,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272452738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:06,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:06,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-22 16:59:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817304803] [2022-07-22 16:59:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:06,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:06,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:06,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:06,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:59:06,176 INFO L87 Difference]: Start difference. First operand 4691 states and 7601 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 16:59:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:08,026 INFO L93 Difference]: Finished difference Result 14235 states and 23318 transitions. [2022-07-22 16:59:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 164 [2022-07-22 16:59:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:08,066 INFO L225 Difference]: With dead ends: 14235 [2022-07-22 16:59:08,066 INFO L226 Difference]: Without dead ends: 9666 [2022-07-22 16:59:08,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:59:08,084 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 1816 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:08,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 1059 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 16:59:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2022-07-22 16:59:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 9664. [2022-07-22 16:59:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9664 states, 7535 states have (on average 1.5777040477770405) internal successors, (11888), 7865 states have internal predecessors, (11888), 1618 states have call successors, (1618), 434 states have call predecessors, (1618), 510 states have return successors, (2243), 1604 states have call predecessors, (2243), 1613 states have call successors, (2243) [2022-07-22 16:59:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9664 states to 9664 states and 15749 transitions. [2022-07-22 16:59:09,162 INFO L78 Accepts]: Start accepts. Automaton has 9664 states and 15749 transitions. Word has length 164 [2022-07-22 16:59:09,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:09,162 INFO L495 AbstractCegarLoop]: Abstraction has 9664 states and 15749 transitions. [2022-07-22 16:59:09,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 16:59:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 9664 states and 15749 transitions. [2022-07-22 16:59:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-22 16:59:09,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:09,168 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:09,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-07-22 16:59:09,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-22 16:59:09,385 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:09,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:09,385 INFO L85 PathProgramCache]: Analyzing trace with hash -173349627, now seen corresponding path program 1 times [2022-07-22 16:59:09,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:09,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439791923] [2022-07-22 16:59:09,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:09,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:59:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:59:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:59:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 16:59:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 16:59:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 16:59:09,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:09,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439791923] [2022-07-22 16:59:09,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439791923] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:09,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287461429] [2022-07-22 16:59:09,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:09,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:09,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:09,820 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:59:09,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-07-22 16:59:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 16:59:10,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 16:59:10,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:59:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 16:59:10,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287461429] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:10,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:59:10,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 18 [2022-07-22 16:59:10,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501756377] [2022-07-22 16:59:10,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:10,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:59:10,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:10,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:59:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:59:10,285 INFO L87 Difference]: Start difference. First operand 9664 states and 15749 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-22 16:59:11,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:11,527 INFO L93 Difference]: Finished difference Result 10477 states and 17148 transitions. [2022-07-22 16:59:11,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:59:11,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 165 [2022-07-22 16:59:11,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:11,579 INFO L225 Difference]: With dead ends: 10477 [2022-07-22 16:59:11,580 INFO L226 Difference]: Without dead ends: 10456 [2022-07-22 16:59:11,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-07-22 16:59:11,589 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 67 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:11,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3388 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:11,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10456 states. [2022-07-22 16:59:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10456 to 9754. [2022-07-22 16:59:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9754 states, 7625 states have (on average 1.5708852459016394) internal successors, (11978), 7955 states have internal predecessors, (11978), 1618 states have call successors, (1618), 434 states have call predecessors, (1618), 510 states have return successors, (2243), 1604 states have call predecessors, (2243), 1613 states have call successors, (2243) [2022-07-22 16:59:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9754 states to 9754 states and 15839 transitions. [2022-07-22 16:59:12,748 INFO L78 Accepts]: Start accepts. Automaton has 9754 states and 15839 transitions. Word has length 165 [2022-07-22 16:59:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:12,748 INFO L495 AbstractCegarLoop]: Abstraction has 9754 states and 15839 transitions. [2022-07-22 16:59:12,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-22 16:59:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 9754 states and 15839 transitions. [2022-07-22 16:59:12,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-22 16:59:12,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:12,763 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:12,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:12,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-22 16:59:12,990 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:12,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:12,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1147458509, now seen corresponding path program 1 times [2022-07-22 16:59:12,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:12,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495253188] [2022-07-22 16:59:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:12,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 16:59:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 16:59:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:59:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 16:59:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 16:59:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:59:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 16:59:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:59:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:59:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-22 16:59:13,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:13,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495253188] [2022-07-22 16:59:13,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495253188] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:13,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221230254] [2022-07-22 16:59:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:13,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:13,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:13,312 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:59:13,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-07-22 16:59:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:59:13,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-22 16:59:13,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:13,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221230254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:13,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:13,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-22 16:59:13,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818096910] [2022-07-22 16:59:13,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:13,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:13,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:13,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:13,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:59:13,608 INFO L87 Difference]: Start difference. First operand 9754 states and 15839 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 16:59:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:14,149 INFO L93 Difference]: Finished difference Result 14334 states and 23254 transitions. [2022-07-22 16:59:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:14,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 205 [2022-07-22 16:59:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:14,169 INFO L225 Difference]: With dead ends: 14334 [2022-07-22 16:59:14,170 INFO L226 Difference]: Without dead ends: 4699 [2022-07-22 16:59:14,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:59:14,194 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 81 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:14,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2372 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:14,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4699 states. [2022-07-22 16:59:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4699 to 4669. [2022-07-22 16:59:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4669 states, 3652 states have (on average 1.576396495071194) internal successors, (5757), 3812 states have internal predecessors, (5757), 769 states have call successors, (769), 219 states have call predecessors, (769), 247 states have return successors, (1003), 757 states have call predecessors, (1003), 765 states have call successors, (1003) [2022-07-22 16:59:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4669 states to 4669 states and 7529 transitions. [2022-07-22 16:59:14,740 INFO L78 Accepts]: Start accepts. Automaton has 4669 states and 7529 transitions. Word has length 205 [2022-07-22 16:59:14,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:14,741 INFO L495 AbstractCegarLoop]: Abstraction has 4669 states and 7529 transitions. [2022-07-22 16:59:14,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 16:59:14,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4669 states and 7529 transitions. [2022-07-22 16:59:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-22 16:59:14,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:14,746 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:14,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-07-22 16:59:14,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-07-22 16:59:14,947 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:14,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash -773707060, now seen corresponding path program 1 times [2022-07-22 16:59:14,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:14,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790984462] [2022-07-22 16:59:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:14,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:59:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:59:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:59:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 16:59:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 16:59:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 16:59:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:59:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:59:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 16:59:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 16:59:15,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:15,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790984462] [2022-07-22 16:59:15,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790984462] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:15,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434329064] [2022-07-22 16:59:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:15,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:15,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:15,424 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:59:15,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-07-22 16:59:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 16:59:15,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 16:59:16,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:59:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 16:59:16,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434329064] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:59:16,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 16:59:16,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 8] total 27 [2022-07-22 16:59:16,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615407635] [2022-07-22 16:59:16,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 16:59:16,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 16:59:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:16,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 16:59:16,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-07-22 16:59:16,643 INFO L87 Difference]: Start difference. First operand 4669 states and 7529 transitions. Second operand has 27 states, 27 states have (on average 10.62962962962963) internal successors, (287), 20 states have internal predecessors, (287), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2022-07-22 16:59:53,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:53,170 INFO L93 Difference]: Finished difference Result 28272 states and 51545 transitions. [2022-07-22 16:59:53,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-22 16:59:53,171 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.62962962962963) internal successors, (287), 20 states have internal predecessors, (287), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) Word has length 202 [2022-07-22 16:59:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:53,330 INFO L225 Difference]: With dead ends: 28272 [2022-07-22 16:59:53,331 INFO L226 Difference]: Without dead ends: 23714 [2022-07-22 16:59:53,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 448 SyntacticMatches, 6 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4420 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1803, Invalid=12239, Unknown=0, NotChecked=0, Total=14042 [2022-07-22 16:59:53,363 INFO L413 NwaCegarLoop]: 2369 mSDtfsCounter, 8285 mSDsluCounter, 14893 mSDsCounter, 0 mSdLazyCounter, 36122 mSolverCounterSat, 4933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8299 SdHoareTripleChecker+Valid, 17262 SdHoareTripleChecker+Invalid, 41055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4933 IncrementalHoareTripleChecker+Valid, 36122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:53,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8299 Valid, 17262 Invalid, 41055 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4933 Valid, 36122 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2022-07-22 16:59:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23714 states. [2022-07-22 16:59:55,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23714 to 15484. [2022-07-22 16:59:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15484 states, 11772 states have (on average 1.5581039755351682) internal successors, (18342), 12357 states have internal predecessors, (18342), 2887 states have call successors, (2887), 615 states have call predecessors, (2887), 824 states have return successors, (4467), 2937 states have call predecessors, (4467), 2883 states have call successors, (4467) [2022-07-22 16:59:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15484 states to 15484 states and 25696 transitions. [2022-07-22 16:59:55,733 INFO L78 Accepts]: Start accepts. Automaton has 15484 states and 25696 transitions. Word has length 202 [2022-07-22 16:59:55,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:55,733 INFO L495 AbstractCegarLoop]: Abstraction has 15484 states and 25696 transitions. [2022-07-22 16:59:55,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.62962962962963) internal successors, (287), 20 states have internal predecessors, (287), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2022-07-22 16:59:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 15484 states and 25696 transitions. [2022-07-22 16:59:55,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-22 16:59:55,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:55,749 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:55,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:55,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:55,951 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:55,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2003689493, now seen corresponding path program 1 times [2022-07-22 16:59:55,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:55,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524305163] [2022-07-22 16:59:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:55,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:59:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:59:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 16:59:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 16:59:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:59:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:59:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:59:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 16:59:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 16:59:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 16:59:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 16:59:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 16:59:56,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:56,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524305163] [2022-07-22 16:59:56,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524305163] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:56,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004900643] [2022-07-22 16:59:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:56,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:56,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:56,282 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:59:56,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-07-22 16:59:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:56,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-22 16:59:56,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:56,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004900643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:56,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:56,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:56,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962727067] [2022-07-22 16:59:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:56,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:56,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:56,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:56,593 INFO L87 Difference]: Start difference. First operand 15484 states and 25696 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 16:59:58,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:58,601 INFO L93 Difference]: Finished difference Result 31215 states and 52172 transitions. [2022-07-22 16:59:58,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:58,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 205 [2022-07-22 16:59:58,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:58,701 INFO L225 Difference]: With dead ends: 31215 [2022-07-22 16:59:58,701 INFO L226 Difference]: Without dead ends: 15924 [2022-07-22 16:59:58,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:58,771 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 17 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:58,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2327 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:58,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15924 states. [2022-07-22 17:00:00,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15924 to 15894. [2022-07-22 17:00:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15894 states, 12118 states have (on average 1.5542168674698795) internal successors, (18834), 12720 states have internal predecessors, (18834), 2887 states have call successors, (2887), 662 states have call predecessors, (2887), 888 states have return successors, (4397), 2937 states have call predecessors, (4397), 2883 states have call successors, (4397) [2022-07-22 17:00:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15894 states to 15894 states and 26118 transitions. [2022-07-22 17:00:00,818 INFO L78 Accepts]: Start accepts. Automaton has 15894 states and 26118 transitions. Word has length 205 [2022-07-22 17:00:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:00,819 INFO L495 AbstractCegarLoop]: Abstraction has 15894 states and 26118 transitions. [2022-07-22 17:00:00,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 17:00:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 15894 states and 26118 transitions. [2022-07-22 17:00:00,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-22 17:00:00,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:00,833 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:00:00,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-07-22 17:00:01,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:00:01,034 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:00:01,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:00:01,035 INFO L85 PathProgramCache]: Analyzing trace with hash -352409104, now seen corresponding path program 1 times [2022-07-22 17:00:01,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:00:01,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102239195] [2022-07-22 17:00:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:01,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:00:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:00:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:00:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:00:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:00:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:00:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:00:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:00:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:00:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:00:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:00:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:00:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:00:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-22 17:00:01,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:00:01,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102239195] [2022-07-22 17:00:01,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102239195] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:00:01,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621235488] [2022-07-22 17:00:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:01,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:00:01,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:00:01,402 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:00:01,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-07-22 17:00:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:01,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:00:01,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:00:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 17:00:01,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:00:01,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621235488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:00:01,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:00:01,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 17:00:01,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005232616] [2022-07-22 17:00:01,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:00:01,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:00:01,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:00:01,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:00:01,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:00:01,694 INFO L87 Difference]: Start difference. First operand 15894 states and 26118 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 17:00:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:00:03,819 INFO L93 Difference]: Finished difference Result 31785 states and 52843 transitions. [2022-07-22 17:00:03,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:00:03,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 205 [2022-07-22 17:00:03,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:00:03,885 INFO L225 Difference]: With dead ends: 31785 [2022-07-22 17:00:03,885 INFO L226 Difference]: Without dead ends: 15978 [2022-07-22 17:00:03,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:00:03,936 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 20 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:00:03,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2326 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:00:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15978 states. [2022-07-22 17:00:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15978 to 15950. [2022-07-22 17:00:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15950 states, 12188 states have (on average 1.5413521496553988) internal successors, (18786), 12762 states have internal predecessors, (18786), 2887 states have call successors, (2887), 676 states have call predecessors, (2887), 874 states have return successors, (4316), 2937 states have call predecessors, (4316), 2883 states have call successors, (4316) [2022-07-22 17:00:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15950 states to 15950 states and 25989 transitions. [2022-07-22 17:00:05,865 INFO L78 Accepts]: Start accepts. Automaton has 15950 states and 25989 transitions. Word has length 205 [2022-07-22 17:00:05,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:05,866 INFO L495 AbstractCegarLoop]: Abstraction has 15950 states and 25989 transitions. [2022-07-22 17:00:05,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 17:00:05,866 INFO L276 IsEmpty]: Start isEmpty. Operand 15950 states and 25989 transitions. [2022-07-22 17:00:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-22 17:00:05,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:05,882 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:00:05,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-07-22 17:00:06,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-07-22 17:00:06,083 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:00:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:00:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash 347313615, now seen corresponding path program 1 times [2022-07-22 17:00:06,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:00:06,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523787789] [2022-07-22 17:00:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:06,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:00:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:00:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:00:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:00:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:00:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:00:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:00:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:00:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:00:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:00:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:00:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:00:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:00:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 17:00:06,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:00:06,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523787789] [2022-07-22 17:00:06,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523787789] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:00:06,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265000326] [2022-07-22 17:00:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:06,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:00:06,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:00:06,396 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:00:06,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-07-22 17:00:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:06,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 17:00:06,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:00:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 57 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 17:00:06,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:00:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-22 17:00:07,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265000326] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:00:07,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:00:07,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 19 [2022-07-22 17:00:07,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937276227] [2022-07-22 17:00:07,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:00:07,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 17:00:07,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:00:07,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 17:00:07,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:00:07,251 INFO L87 Difference]: Start difference. First operand 15950 states and 25989 transitions. Second operand has 19 states, 19 states have (on average 13.105263157894736) internal successors, (249), 14 states have internal predecessors, (249), 7 states have call successors, (47), 8 states have call predecessors, (47), 11 states have return successors, (44), 9 states have call predecessors, (44), 7 states have call successors, (44) [2022-07-22 17:00:29,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:00:29,801 INFO L93 Difference]: Finished difference Result 60881 states and 109230 transitions. [2022-07-22 17:00:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-22 17:00:29,802 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.105263157894736) internal successors, (249), 14 states have internal predecessors, (249), 7 states have call successors, (47), 8 states have call predecessors, (47), 11 states have return successors, (44), 9 states have call predecessors, (44), 7 states have call successors, (44) Word has length 208 [2022-07-22 17:00:29,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:00:30,103 INFO L225 Difference]: With dead ends: 60881 [2022-07-22 17:00:30,103 INFO L226 Difference]: Without dead ends: 44682 [2022-07-22 17:00:30,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 465 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=618, Invalid=2804, Unknown=0, NotChecked=0, Total=3422 [2022-07-22 17:00:30,207 INFO L413 NwaCegarLoop]: 1823 mSDtfsCounter, 6783 mSDsluCounter, 7637 mSDsCounter, 0 mSdLazyCounter, 15944 mSolverCounterSat, 2810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6797 SdHoareTripleChecker+Valid, 9460 SdHoareTripleChecker+Invalid, 18754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2810 IncrementalHoareTripleChecker+Valid, 15944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:00:30,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6797 Valid, 9460 Invalid, 18754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2810 Valid, 15944 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-07-22 17:00:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44682 states. [2022-07-22 17:00:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44682 to 35074. [2022-07-22 17:00:35,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35074 states, 26018 states have (on average 1.532669690214467) internal successors, (39877), 27408 states have internal predecessors, (39877), 7280 states have call successors, (7280), 1319 states have call predecessors, (7280), 1775 states have return successors, (11064), 7410 states have call predecessors, (11064), 7276 states have call successors, (11064) [2022-07-22 17:00:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35074 states to 35074 states and 58221 transitions. [2022-07-22 17:00:35,909 INFO L78 Accepts]: Start accepts. Automaton has 35074 states and 58221 transitions. Word has length 208 [2022-07-22 17:00:35,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:35,910 INFO L495 AbstractCegarLoop]: Abstraction has 35074 states and 58221 transitions. [2022-07-22 17:00:35,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.105263157894736) internal successors, (249), 14 states have internal predecessors, (249), 7 states have call successors, (47), 8 states have call predecessors, (47), 11 states have return successors, (44), 9 states have call predecessors, (44), 7 states have call successors, (44) [2022-07-22 17:00:35,910 INFO L276 IsEmpty]: Start isEmpty. Operand 35074 states and 58221 transitions. [2022-07-22 17:00:35,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-22 17:00:35,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:35,952 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:35,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-07-22 17:00:36,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-07-22 17:00:36,153 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:00:36,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:00:36,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2100516111, now seen corresponding path program 1 times [2022-07-22 17:00:36,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:00:36,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724601995] [2022-07-22 17:00:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:36,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:00:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:00:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:00:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:00:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:00:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:00:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:00:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:00:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:00:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:00:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:00:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:00:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:00:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:00:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:00:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-22 17:00:36,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:00:36,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724601995] [2022-07-22 17:00:36,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724601995] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:00:36,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061909709] [2022-07-22 17:00:36,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:36,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:00:36,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:00:36,476 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:00:36,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-07-22 17:00:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:36,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2037 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 17:00:36,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:00:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 17:00:36,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:00:36,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061909709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:00:36,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:00:36,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-22 17:00:36,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490421825] [2022-07-22 17:00:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:00:36,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:00:36,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:00:36,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:00:36,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:00:36,838 INFO L87 Difference]: Start difference. First operand 35074 states and 58221 transitions. Second operand has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-22 17:00:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:00:42,100 INFO L93 Difference]: Finished difference Result 61846 states and 102452 transitions. [2022-07-22 17:00:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:00:42,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 210 [2022-07-22 17:00:42,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:00:42,333 INFO L225 Difference]: With dead ends: 61846 [2022-07-22 17:00:42,333 INFO L226 Difference]: Without dead ends: 35056 [2022-07-22 17:00:42,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:00:42,428 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 136 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 5461 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:00:42,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 5461 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:00:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35056 states. [2022-07-22 17:00:47,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35056 to 35056. [2022-07-22 17:00:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35056 states, 26000 states have (on average 1.5328076923076923) internal successors, (39853), 27390 states have internal predecessors, (39853), 7280 states have call successors, (7280), 1319 states have call predecessors, (7280), 1775 states have return successors, (11064), 7410 states have call predecessors, (11064), 7276 states have call successors, (11064) [2022-07-22 17:00:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35056 states to 35056 states and 58197 transitions. [2022-07-22 17:00:47,611 INFO L78 Accepts]: Start accepts. Automaton has 35056 states and 58197 transitions. Word has length 210 [2022-07-22 17:00:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:47,612 INFO L495 AbstractCegarLoop]: Abstraction has 35056 states and 58197 transitions. [2022-07-22 17:00:47,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-22 17:00:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand 35056 states and 58197 transitions. [2022-07-22 17:00:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-22 17:00:47,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:47,651 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:00:47,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-07-22 17:00:47,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-07-22 17:00:47,852 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:00:47,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:00:47,852 INFO L85 PathProgramCache]: Analyzing trace with hash -46615776, now seen corresponding path program 1 times [2022-07-22 17:00:47,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:00:47,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465448132] [2022-07-22 17:00:47,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:47,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:00:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:47,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:00:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:47,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:00:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:00:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:00:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:00:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:00:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:00:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:00:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:00:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:00:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:00:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:00:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:00:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:00:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-22 17:00:48,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:00:48,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465448132] [2022-07-22 17:00:48,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465448132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:00:48,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722602036] [2022-07-22 17:00:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:48,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:00:48,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:00:48,160 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:00:48,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-07-22 17:00:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:48,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:00:48,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:00:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 17:00:48,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:00:48,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722602036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:00:48,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:00:48,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-22 17:00:48,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674201077] [2022-07-22 17:00:48,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:00:48,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:00:48,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:00:48,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:00:48,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:00:48,451 INFO L87 Difference]: Start difference. First operand 35056 states and 58197 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 17:00:54,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:00:54,115 INFO L93 Difference]: Finished difference Result 68468 states and 114692 transitions. [2022-07-22 17:00:54,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:00:54,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 211 [2022-07-22 17:00:54,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:00:54,299 INFO L225 Difference]: With dead ends: 68468 [2022-07-22 17:00:54,300 INFO L226 Difference]: Without dead ends: 35686 [2022-07-22 17:00:54,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:00:54,424 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 15 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:00:54,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2327 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:00:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35686 states. [2022-07-22 17:00:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35686 to 35624. [2022-07-22 17:00:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35624 states, 26488 states have (on average 1.5306931440652372) internal successors, (40545), 27890 states have internal predecessors, (40545), 7280 states have call successors, (7280), 1387 states have call predecessors, (7280), 1855 states have return successors, (11048), 7410 states have call predecessors, (11048), 7276 states have call successors, (11048) [2022-07-22 17:00:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35624 states to 35624 states and 58873 transitions. [2022-07-22 17:00:59,887 INFO L78 Accepts]: Start accepts. Automaton has 35624 states and 58873 transitions. Word has length 211 [2022-07-22 17:00:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:59,888 INFO L495 AbstractCegarLoop]: Abstraction has 35624 states and 58873 transitions. [2022-07-22 17:00:59,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 17:00:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 35624 states and 58873 transitions. [2022-07-22 17:00:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-22 17:00:59,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:59,930 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:00:59,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-07-22 17:01:00,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-07-22 17:01:00,131 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:01:00,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:01:00,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1337023163, now seen corresponding path program 1 times [2022-07-22 17:01:00,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:01:00,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114861870] [2022-07-22 17:01:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:01:00,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:01:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:01:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:01:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:01:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:01:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:01:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:01:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:01:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:01:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:01:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:01:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:01:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:01:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:01:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:01:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:01:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:01:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:01:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-22 17:01:00,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:01:00,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114861870] [2022-07-22 17:01:00,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114861870] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:01:00,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805771925] [2022-07-22 17:01:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:01:00,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:01:00,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:01:00,452 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:01:00,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-07-22 17:01:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:00,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 17:01:00,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:01:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 17:01:00,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:01:00,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805771925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:01:00,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:01:00,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-22 17:01:00,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821846791] [2022-07-22 17:01:00,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:01:00,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:01:00,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:01:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:01:00,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:01:00,753 INFO L87 Difference]: Start difference. First operand 35624 states and 58873 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 17:01:06,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:01:06,095 INFO L93 Difference]: Finished difference Result 62995 states and 103840 transitions. [2022-07-22 17:01:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:01:06,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 211 [2022-07-22 17:01:06,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:01:06,278 INFO L225 Difference]: With dead ends: 62995 [2022-07-22 17:01:06,279 INFO L226 Difference]: Without dead ends: 35666 [2022-07-22 17:01:06,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:01:06,370 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 46 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:01:06,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2390 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:01:06,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35666 states.