./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec13_product21.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 bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:15:24,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:15:24,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:15:24,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:15:24,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:15:24,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:15:24,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:15:24,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:15:24,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:15:24,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:15:24,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:15:24,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:15:24,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:15:24,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:15:24,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:15:24,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:15:24,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:15:24,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:15:24,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:15:24,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:15:24,091 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:15:24,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:15:24,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:15:24,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:15:24,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:15:24,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:15:24,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:15:24,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:15:24,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:15:24,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:15:24,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:15:24,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:15:24,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:15:24,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:15:24,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:15:24,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:15:24,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:15:24,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:15:24,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:15:24,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:15:24,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:15:24,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:15:24,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:15:24,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:15:24,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:15:24,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:15:24,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:15:24,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:15:24,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:15:24,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:15:24,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:15:24,141 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:15:24,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:15:24,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:15:24,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:15:24,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:15:24,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:15:24,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:15:24,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:15:24,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:15:24,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:15:24,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:15:24,143 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:15:24,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:15:24,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:15:24,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:15:24,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:15:24,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:15:24,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:15:24,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:15:24,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:15:24,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:15:24,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:15:24,145 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:15:24,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:15:24,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:15:24,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2022-07-21 04:15:24,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:15:24,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:15:24,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:15:24,420 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:15:24,420 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:15:24,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2022-07-21 04:15:24,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762ed48e7/37197aac7f6f432983bfe9d8ed186347/FLAG7e67d3e4e [2022-07-21 04:15:24,974 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:15:24,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2022-07-21 04:15:25,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762ed48e7/37197aac7f6f432983bfe9d8ed186347/FLAG7e67d3e4e [2022-07-21 04:15:25,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762ed48e7/37197aac7f6f432983bfe9d8ed186347 [2022-07-21 04:15:25,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:15:25,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:15:25,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:15:25,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:15:25,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:15:25,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:15:25" (1/1) ... [2022-07-21 04:15:25,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc629fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:25, skipping insertion in model container [2022-07-21 04:15:25,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:15:25" (1/1) ... [2022-07-21 04:15:25,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:15:25,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:15:25,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2022-07-21 04:15:25,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:15:25,932 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:15:26,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2022-07-21 04:15:26,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:15:26,075 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:15:26,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26 WrapperNode [2022-07-21 04:15:26,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:15:26,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:15:26,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:15:26,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:15:26,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (1/1) ... [2022-07-21 04:15:26,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (1/1) ... [2022-07-21 04:15:26,159 INFO L137 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 818 [2022-07-21 04:15:26,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:15:26,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:15:26,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:15:26,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:15:26,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (1/1) ... [2022-07-21 04:15:26,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (1/1) ... [2022-07-21 04:15:26,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (1/1) ... [2022-07-21 04:15:26,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (1/1) ... [2022-07-21 04:15:26,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (1/1) ... [2022-07-21 04:15:26,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (1/1) ... [2022-07-21 04:15:26,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (1/1) ... [2022-07-21 04:15:26,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:15:26,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:15:26,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:15:26,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:15:26,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (1/1) ... [2022-07-21 04:15:26,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:15:26,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:26,263 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) [2022-07-21 04:15:26,279 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 [2022-07-21 04:15:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-21 04:15:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-21 04:15:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:15:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-21 04:15:26,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-21 04:15:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-21 04:15:26,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-21 04:15:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-07-21 04:15:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-07-21 04:15:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-21 04:15:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-21 04:15:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-21 04:15:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-21 04:15:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-21 04:15:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-21 04:15:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-21 04:15:26,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-21 04:15:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-21 04:15:26,303 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-21 04:15:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-21 04:15:26,303 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-21 04:15:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-21 04:15:26,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-21 04:15:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-21 04:15:26,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-21 04:15:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-21 04:15:26,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-21 04:15:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-21 04:15:26,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-21 04:15:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-21 04:15:26,304 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-21 04:15:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-21 04:15:26,305 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-21 04:15:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-21 04:15:26,305 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-21 04:15:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-21 04:15:26,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-21 04:15:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-21 04:15:26,306 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-21 04:15:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:15:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-21 04:15:26,306 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-21 04:15:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-21 04:15:26,306 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-21 04:15:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-21 04:15:26,307 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-21 04:15:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-21 04:15:26,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-21 04:15:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-21 04:15:26,307 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-21 04:15:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:15:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:15:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-21 04:15:26,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-21 04:15:26,473 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:15:26,474 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:15:27,300 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:15:27,325 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:15:27,325 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 04:15:27,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:15:27 BoogieIcfgContainer [2022-07-21 04:15:27,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:15:27,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:15:27,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:15:27,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:15:27,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:15:25" (1/3) ... [2022-07-21 04:15:27,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d5d3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:15:27, skipping insertion in model container [2022-07-21 04:15:27,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:26" (2/3) ... [2022-07-21 04:15:27,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d5d3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:15:27, skipping insertion in model container [2022-07-21 04:15:27,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:15:27" (3/3) ... [2022-07-21 04:15:27,332 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2022-07-21 04:15:27,344 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:15:27,344 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:15:27,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:15:27,392 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@59945ab8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3603af1b [2022-07-21 04:15:27,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:15:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 592 states, 465 states have (on average 1.6924731182795698) internal successors, (787), 483 states have internal predecessors, (787), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-21 04:15:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:15:27,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:27,423 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] [2022-07-21 04:15:27,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash -525274672, now seen corresponding path program 1 times [2022-07-21 04:15:27,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:27,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338935793] [2022-07-21 04:15:27,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:27,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:15:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 04:15:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:15:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:15:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:15:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:15:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:15:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:15:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:15:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:15:27,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:27,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338935793] [2022-07-21 04:15:27,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338935793] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:27,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893748215] [2022-07-21 04:15:27,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:27,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:27,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:27,915 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) [2022-07-21 04:15:27,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:15:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 04:15:28,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 04:15:28,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:28,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893748215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:28,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:28,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-07-21 04:15:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307470010] [2022-07-21 04:15:28,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:28,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 04:15:28,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:28,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 04:15:28,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:15:28,287 INFO L87 Difference]: Start difference. First operand has 592 states, 465 states have (on average 1.6924731182795698) internal successors, (787), 483 states have internal predecessors, (787), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:28,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:28,368 INFO L93 Difference]: Finished difference Result 1162 states and 1957 transitions. [2022-07-21 04:15:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 04:15:28,370 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-07-21 04:15:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:28,386 INFO L225 Difference]: With dead ends: 1162 [2022-07-21 04:15:28,387 INFO L226 Difference]: Without dead ends: 582 [2022-07-21 04:15:28,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:15:28,400 INFO L413 NwaCegarLoop]: 975 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, 975 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 [2022-07-21 04:15:28,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:15:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-07-21 04:15:28,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2022-07-21 04:15:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 458 states have (on average 1.6746724890829694) internal successors, (767), 474 states have internal predecessors, (767), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-21 04:15:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 964 transitions. [2022-07-21 04:15:28,497 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 964 transitions. Word has length 114 [2022-07-21 04:15:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:28,500 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 964 transitions. [2022-07-21 04:15:28,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:28,500 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 964 transitions. [2022-07-21 04:15:28,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:15:28,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:28,508 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] [2022-07-21 04:15:28,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:28,727 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 [2022-07-21 04:15:28,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash 281689968, now seen corresponding path program 1 times [2022-07-21 04:15:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:28,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437410113] [2022-07-21 04:15:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:28,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:15:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 04:15:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:15:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:15:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:15:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:15:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:15:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:15:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:15:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:15:28,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:28,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437410113] [2022-07-21 04:15:28,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437410113] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:28,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211698288] [2022-07-21 04:15:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:28,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:28,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:28,942 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) [2022-07-21 04:15:28,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:15:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:15:29,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:15:29,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:29,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211698288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:29,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:29,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 04:15:29,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725202574] [2022-07-21 04:15:29,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:29,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:15:29,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:29,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:15:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:15:29,200 INFO L87 Difference]: Start difference. First operand 582 states and 964 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:29,297 INFO L93 Difference]: Finished difference Result 1701 states and 2863 transitions. [2022-07-21 04:15:29,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:15:29,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-07-21 04:15:29,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:29,307 INFO L225 Difference]: With dead ends: 1701 [2022-07-21 04:15:29,307 INFO L226 Difference]: Without dead ends: 1139 [2022-07-21 04:15:29,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:15:29,312 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 963 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:29,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1997 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:15:29,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-07-21 04:15:29,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1130. [2022-07-21 04:15:29,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 896 states have (on average 1.6852678571428572) internal successors, (1510), 925 states have internal predecessors, (1510), 188 states have call successors, (188), 47 states have call predecessors, (188), 45 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2022-07-21 04:15:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1894 transitions. [2022-07-21 04:15:29,363 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1894 transitions. Word has length 114 [2022-07-21 04:15:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:29,364 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1894 transitions. [2022-07-21 04:15:29,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1894 transitions. [2022-07-21 04:15:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:15:29,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:29,368 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] [2022-07-21 04:15:29,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:29,587 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 [2022-07-21 04:15:29,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash 6930354, now seen corresponding path program 1 times [2022-07-21 04:15:29,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:29,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872297903] [2022-07-21 04:15:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:29,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:15:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 04:15:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:15:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:15:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:15:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:15:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:15:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:15:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:15:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:15:29,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:29,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872297903] [2022-07-21 04:15:29,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872297903] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:29,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211707286] [2022-07-21 04:15:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:29,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:29,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:29,796 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) [2022-07-21 04:15:29,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:15:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:15:30,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:15:30,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:30,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211707286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:30,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:30,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-21 04:15:30,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727649966] [2022-07-21 04:15:30,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:30,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:15:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:30,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:15:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:15:30,087 INFO L87 Difference]: Start difference. First operand 1130 states and 1894 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:30,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:30,162 INFO L93 Difference]: Finished difference Result 2261 states and 3796 transitions. [2022-07-21 04:15:30,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:15:30,163 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-07-21 04:15:30,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:30,169 INFO L225 Difference]: With dead ends: 2261 [2022-07-21 04:15:30,169 INFO L226 Difference]: Without dead ends: 1139 [2022-07-21 04:15:30,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:15:30,175 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 26 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:30,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2838 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:15:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-07-21 04:15:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2022-07-21 04:15:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 904 states have (on average 1.6858407079646018) internal successors, (1524), 933 states have internal predecessors, (1524), 188 states have call successors, (188), 48 states have call predecessors, (188), 46 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2022-07-21 04:15:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1908 transitions. [2022-07-21 04:15:30,219 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1908 transitions. Word has length 114 [2022-07-21 04:15:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:30,219 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1908 transitions. [2022-07-21 04:15:30,219 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:30,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1908 transitions. [2022-07-21 04:15:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 04:15:30,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:30,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:15:30,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:30,439 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 [2022-07-21 04:15:30,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:30,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2024156388, now seen corresponding path program 1 times [2022-07-21 04:15:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:30,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751495861] [2022-07-21 04:15:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:30,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:15:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:15:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:15:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 04:15:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:15:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:15:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:15:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:15:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:15:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:15:30,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:30,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751495861] [2022-07-21 04:15:30,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751495861] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:30,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267868241] [2022-07-21 04:15:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:30,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:30,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:30,668 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) [2022-07-21 04:15:30,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 04:15:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:30,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:15:30,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:15:30,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:30,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267868241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:30,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:30,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-07-21 04:15:30,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726488465] [2022-07-21 04:15:30,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:30,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:15:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:30,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:15:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:15:30,951 INFO L87 Difference]: Start difference. First operand 1139 states and 1908 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:31,118 INFO L93 Difference]: Finished difference Result 2313 states and 3891 transitions. [2022-07-21 04:15:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:15:31,119 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-07-21 04:15:31,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:31,126 INFO L225 Difference]: With dead ends: 2313 [2022-07-21 04:15:31,126 INFO L226 Difference]: Without dead ends: 1184 [2022-07-21 04:15:31,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:15:31,132 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 170 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:31,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 2682 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:31,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-07-21 04:15:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1184. [2022-07-21 04:15:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 948 states have (on average 1.6962025316455696) internal successors, (1608), 977 states have internal predecessors, (1608), 188 states have call successors, (188), 49 states have call predecessors, (188), 47 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2022-07-21 04:15:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1992 transitions. [2022-07-21 04:15:31,161 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1992 transitions. Word has length 116 [2022-07-21 04:15:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:31,161 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1992 transitions. [2022-07-21 04:15:31,161 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:31,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1992 transitions. [2022-07-21 04:15:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 04:15:31,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:31,165 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] [2022-07-21 04:15:31,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-21 04:15:31,370 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 [2022-07-21 04:15:31,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:31,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:31,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1811366008, now seen corresponding path program 1 times [2022-07-21 04:15:31,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:31,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676839016] [2022-07-21 04:15:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:31,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:15:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:15:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:15:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:15:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:15:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:15:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:15:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:15:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 04:15:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 04:15:31,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:31,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676839016] [2022-07-21 04:15:31,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676839016] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:31,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262905594] [2022-07-21 04:15:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:31,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:31,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:31,577 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) [2022-07-21 04:15:31,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 04:15:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:31,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:15:31,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:15:31,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:31,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262905594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:31,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:31,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-21 04:15:31,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541784831] [2022-07-21 04:15:31,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:31,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:15:31,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:15:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:15:31,861 INFO L87 Difference]: Start difference. First operand 1184 states and 1992 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:31,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:31,982 INFO L93 Difference]: Finished difference Result 2407 states and 4053 transitions. [2022-07-21 04:15:31,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:15:31,983 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2022-07-21 04:15:31,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:31,991 INFO L225 Difference]: With dead ends: 2407 [2022-07-21 04:15:31,991 INFO L226 Difference]: Without dead ends: 1233 [2022-07-21 04:15:32,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:15:32,003 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 118 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 5635 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:32,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 5635 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:32,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-07-21 04:15:32,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1197. [2022-07-21 04:15:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 958 states have (on average 1.6941544885177453) internal successors, (1623), 989 states have internal predecessors, (1623), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2022-07-21 04:15:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2013 transitions. [2022-07-21 04:15:32,040 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2013 transitions. Word has length 118 [2022-07-21 04:15:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:32,041 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 2013 transitions. [2022-07-21 04:15:32,041 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2013 transitions. [2022-07-21 04:15:32,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-21 04:15:32,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:32,046 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] [2022-07-21 04:15:32,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:32,259 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 [2022-07-21 04:15:32,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:32,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash 127341011, now seen corresponding path program 1 times [2022-07-21 04:15:32,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:32,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281583365] [2022-07-21 04:15:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:32,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:15:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:15:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:15:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:15:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:15:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:15:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:15:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:15:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:15:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:15:32,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:32,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281583365] [2022-07-21 04:15:32,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281583365] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:32,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692076219] [2022-07-21 04:15:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:32,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:32,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:32,460 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) [2022-07-21 04:15:32,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 04:15:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:32,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:15:32,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:15:32,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:32,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692076219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:32,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:32,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-21 04:15:32,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739749749] [2022-07-21 04:15:32,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:32,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:15:32,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:15:32,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:15:32,731 INFO L87 Difference]: Start difference. First operand 1197 states and 2013 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:32,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:32,826 INFO L93 Difference]: Finished difference Result 2427 states and 4084 transitions. [2022-07-21 04:15:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:15:32,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2022-07-21 04:15:32,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:32,831 INFO L225 Difference]: With dead ends: 2427 [2022-07-21 04:15:32,832 INFO L226 Difference]: Without dead ends: 1242 [2022-07-21 04:15:32,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:15:32,837 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 129 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5640 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:32,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5640 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:15:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2022-07-21 04:15:32,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1197. [2022-07-21 04:15:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 958 states have (on average 1.6941544885177453) internal successors, (1623), 989 states have internal predecessors, (1623), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2022-07-21 04:15:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2013 transitions. [2022-07-21 04:15:32,865 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2013 transitions. Word has length 119 [2022-07-21 04:15:32,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:32,865 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 2013 transitions. [2022-07-21 04:15:32,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:32,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2013 transitions. [2022-07-21 04:15:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-21 04:15:32,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:32,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:15:32,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:33,087 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 [2022-07-21 04:15:33,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:33,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:33,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1740207191, now seen corresponding path program 1 times [2022-07-21 04:15:33,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:33,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022101871] [2022-07-21 04:15:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:15:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:15:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:15:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:15:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:15:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:15:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:15:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:15:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:15:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:15:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:15:33,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:33,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022101871] [2022-07-21 04:15:33,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022101871] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:33,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277480415] [2022-07-21 04:15:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:33,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:33,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:33,229 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) [2022-07-21 04:15:33,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 04:15:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:15:33,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:15:33,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:33,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277480415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:33,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:33,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:15:33,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304908587] [2022-07-21 04:15:33,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:33,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:15:33,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:33,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:15:33,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:15:33,462 INFO L87 Difference]: Start difference. First operand 1197 states and 2013 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:33,526 INFO L93 Difference]: Finished difference Result 2399 states and 4035 transitions. [2022-07-21 04:15:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:15:33,527 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2022-07-21 04:15:33,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:33,532 INFO L225 Difference]: With dead ends: 2399 [2022-07-21 04:15:33,532 INFO L226 Difference]: Without dead ends: 1208 [2022-07-21 04:15:33,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:15:33,538 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 20 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:33,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2839 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:15:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2022-07-21 04:15:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1206. [2022-07-21 04:15:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-07-21 04:15:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2022-07-21 04:15:33,565 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 119 [2022-07-21 04:15:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:33,566 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2022-07-21 04:15:33,566 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2022-07-21 04:15:33,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 04:15:33,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:33,569 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] [2022-07-21 04:15:33,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:33,783 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 [2022-07-21 04:15:33,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash -107080124, now seen corresponding path program 1 times [2022-07-21 04:15:33,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:33,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246282411] [2022-07-21 04:15:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 04:15:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:15:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:15:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:15:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:15:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:15:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:15:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:15:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:15:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:15:33,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:33,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246282411] [2022-07-21 04:15:33,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246282411] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:33,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147913653] [2022-07-21 04:15:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:33,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:33,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:33,943 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) [2022-07-21 04:15:33,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 04:15:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:15:34,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:15:34,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:34,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147913653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:34,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:34,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-21 04:15:34,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425905031] [2022-07-21 04:15:34,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:34,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:15:34,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:34,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:15:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:15:34,217 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:34,325 INFO L93 Difference]: Finished difference Result 2436 states and 4079 transitions. [2022-07-21 04:15:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:15:34,325 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2022-07-21 04:15:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:34,331 INFO L225 Difference]: With dead ends: 2436 [2022-07-21 04:15:34,331 INFO L226 Difference]: Without dead ends: 1253 [2022-07-21 04:15:34,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:15:34,336 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 140 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 5588 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:34,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 5588 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2022-07-21 04:15:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1206. [2022-07-21 04:15:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-07-21 04:15:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2022-07-21 04:15:34,369 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 120 [2022-07-21 04:15:34,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:34,369 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2022-07-21 04:15:34,369 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2022-07-21 04:15:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 04:15:34,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:34,372 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] [2022-07-21 04:15:34,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:34,587 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 [2022-07-21 04:15:34,588 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:34,588 INFO L85 PathProgramCache]: Analyzing trace with hash -35089662, now seen corresponding path program 1 times [2022-07-21 04:15:34,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:34,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133792730] [2022-07-21 04:15:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:34,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 04:15:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:15:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:15:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:15:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:15:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:15:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:15:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:15:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:15:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:15:34,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:34,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133792730] [2022-07-21 04:15:34,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133792730] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:34,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290133599] [2022-07-21 04:15:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:34,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:34,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:34,790 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) [2022-07-21 04:15:34,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 04:15:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:34,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:15:34,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:15:35,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:35,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290133599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:35,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:35,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-21 04:15:35,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794927494] [2022-07-21 04:15:35,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:35,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:15:35,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:15:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:15:35,059 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:35,203 INFO L93 Difference]: Finished difference Result 2439 states and 4083 transitions. [2022-07-21 04:15:35,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:15:35,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2022-07-21 04:15:35,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:35,209 INFO L225 Difference]: With dead ends: 2439 [2022-07-21 04:15:35,209 INFO L226 Difference]: Without dead ends: 1256 [2022-07-21 04:15:35,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:15:35,214 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 140 mSDsluCounter, 5562 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:35,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6507 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-07-21 04:15:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1206. [2022-07-21 04:15:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-07-21 04:15:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2022-07-21 04:15:35,242 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 120 [2022-07-21 04:15:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:35,243 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2022-07-21 04:15:35,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2022-07-21 04:15:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-21 04:15:35,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:35,247 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] [2022-07-21 04:15:35,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-21 04:15:35,463 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 [2022-07-21 04:15:35,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:35,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash 996880591, now seen corresponding path program 1 times [2022-07-21 04:15:35,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:35,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547120395] [2022-07-21 04:15:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 04:15:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:15:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:15:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:15:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:15:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:15:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:15:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:15:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 04:15:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:15:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:35,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547120395] [2022-07-21 04:15:35,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547120395] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:35,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42430887] [2022-07-21 04:15:35,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:35,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:35,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:35,632 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) [2022-07-21 04:15:35,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 04:15:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:35,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:15:35,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:15:35,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:35,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42430887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:35,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:35,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-21 04:15:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440606932] [2022-07-21 04:15:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:35,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:15:35,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:15:35,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:15:35,887 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:36,040 INFO L93 Difference]: Finished difference Result 2439 states and 4083 transitions. [2022-07-21 04:15:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:15:36,040 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2022-07-21 04:15:36,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:36,045 INFO L225 Difference]: With dead ends: 2439 [2022-07-21 04:15:36,046 INFO L226 Difference]: Without dead ends: 1256 [2022-07-21 04:15:36,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:15:36,051 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 150 mSDsluCounter, 5550 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6495 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:36,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 6495 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-07-21 04:15:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1206. [2022-07-21 04:15:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-07-21 04:15:36,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2022-07-21 04:15:36,084 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 121 [2022-07-21 04:15:36,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:36,084 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2022-07-21 04:15:36,084 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:36,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2022-07-21 04:15:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-21 04:15:36,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:36,089 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] [2022-07-21 04:15:36,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:36,303 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 [2022-07-21 04:15:36,303 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:36,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1842820803, now seen corresponding path program 1 times [2022-07-21 04:15:36,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:36,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912079081] [2022-07-21 04:15:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:36,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:15:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:15:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:15:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:15:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:15:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:15:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:15:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:15:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:15:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:15:36,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:36,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912079081] [2022-07-21 04:15:36,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912079081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:36,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558953483] [2022-07-21 04:15:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:36,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:36,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:36,480 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) [2022-07-21 04:15:36,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 04:15:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:36,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:15:36,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:15:36,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:36,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558953483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:36,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:36,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-21 04:15:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363091601] [2022-07-21 04:15:36,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:36,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:15:36,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:15:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:15:36,756 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:36,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:36,891 INFO L93 Difference]: Finished difference Result 2430 states and 4068 transitions. [2022-07-21 04:15:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:15:36,892 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2022-07-21 04:15:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:36,897 INFO L225 Difference]: With dead ends: 2430 [2022-07-21 04:15:36,897 INFO L226 Difference]: Without dead ends: 1247 [2022-07-21 04:15:36,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:15:36,902 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 160 mSDsluCounter, 5538 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6483 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:36,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 6483 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-07-21 04:15:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1206. [2022-07-21 04:15:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-07-21 04:15:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2022-07-21 04:15:36,933 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 122 [2022-07-21 04:15:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:36,933 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2022-07-21 04:15:36,933 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:36,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2022-07-21 04:15:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-21 04:15:36,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:36,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:15:36,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:37,145 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 [2022-07-21 04:15:37,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:37,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1459442657, now seen corresponding path program 1 times [2022-07-21 04:15:37,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:37,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843070047] [2022-07-21 04:15:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:37,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:15:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:15:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:15:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:15:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:15:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:15:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:15:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:15:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:15:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:15:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:15:37,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:37,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843070047] [2022-07-21 04:15:37,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843070047] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:37,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108066199] [2022-07-21 04:15:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:37,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:37,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:37,320 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) [2022-07-21 04:15:37,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 04:15:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:15:37,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 04:15:37,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:37,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108066199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:37,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:37,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:15:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056905059] [2022-07-21 04:15:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:37,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:15:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:15:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:15:37,553 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:37,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:37,614 INFO L93 Difference]: Finished difference Result 2378 states and 3986 transitions. [2022-07-21 04:15:37,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:15:37,614 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-07-21 04:15:37,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:37,619 INFO L225 Difference]: With dead ends: 2378 [2022-07-21 04:15:37,620 INFO L226 Difference]: Without dead ends: 1206 [2022-07-21 04:15:37,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:15:37,625 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 35 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2837 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 [2022-07-21 04:15:37,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2837 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:15:37,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-07-21 04:15:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1206. [2022-07-21 04:15:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6801242236024845) internal successors, (1623), 997 states have internal predecessors, (1623), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2022-07-21 04:15:37,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2012 transitions. [2022-07-21 04:15:37,653 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2012 transitions. Word has length 122 [2022-07-21 04:15:37,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:37,653 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2012 transitions. [2022-07-21 04:15:37,654 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:37,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2012 transitions. [2022-07-21 04:15:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 04:15:37,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:37,657 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] [2022-07-21 04:15:37,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:37,875 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 [2022-07-21 04:15:37,875 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:37,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash -563421386, now seen corresponding path program 1 times [2022-07-21 04:15:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:37,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197455239] [2022-07-21 04:15:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:37,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:15:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:15:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:37,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:15:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 04:15:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:15:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:15:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:15:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:15:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:15:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 04:15:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:15:38,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:38,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197455239] [2022-07-21 04:15:38,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197455239] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:38,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591564255] [2022-07-21 04:15:38,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:38,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:38,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:38,036 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) [2022-07-21 04:15:38,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 04:15:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:15:38,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 04:15:38,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:38,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591564255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:38,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:38,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-07-21 04:15:38,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940954677] [2022-07-21 04:15:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:38,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:15:38,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:38,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:15:38,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:15:38,264 INFO L87 Difference]: Start difference. First operand 1206 states and 2012 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:38,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:38,404 INFO L93 Difference]: Finished difference Result 2374 states and 3977 transitions. [2022-07-21 04:15:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:15:38,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-07-21 04:15:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:38,411 INFO L225 Difference]: With dead ends: 2374 [2022-07-21 04:15:38,411 INFO L226 Difference]: Without dead ends: 1260 [2022-07-21 04:15:38,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:15:38,417 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 241 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:38,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2671 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:38,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-07-21 04:15:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1251. [2022-07-21 04:15:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1010 states have (on average 1.69009900990099) internal successors, (1707), 1041 states have internal predecessors, (1707), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2022-07-21 04:15:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 2095 transitions. [2022-07-21 04:15:38,448 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 2095 transitions. Word has length 123 [2022-07-21 04:15:38,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:38,448 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 2095 transitions. [2022-07-21 04:15:38,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 2095 transitions. [2022-07-21 04:15:38,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 04:15:38,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:38,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:15:38,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:38,667 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 [2022-07-21 04:15:38,667 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:38,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:38,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1187945535, now seen corresponding path program 1 times [2022-07-21 04:15:38,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:38,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4617426] [2022-07-21 04:15:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:38,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:15:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:15:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:15:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 04:15:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:15:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:15:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:15:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:15:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:15:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 04:15:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 04:15:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:38,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4617426] [2022-07-21 04:15:38,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4617426] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:38,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436504220] [2022-07-21 04:15:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:38,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:38,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:38,842 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) [2022-07-21 04:15:38,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 04:15:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:15:39,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:15:39,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:39,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436504220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:39,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:39,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-07-21 04:15:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635032536] [2022-07-21 04:15:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:39,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:15:39,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:15:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:15:39,130 INFO L87 Difference]: Start difference. First operand 1251 states and 2095 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:39,229 INFO L93 Difference]: Finished difference Result 2411 states and 4029 transitions. [2022-07-21 04:15:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:15:39,229 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2022-07-21 04:15:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:39,238 INFO L225 Difference]: With dead ends: 2411 [2022-07-21 04:15:39,238 INFO L226 Difference]: Without dead ends: 1297 [2022-07-21 04:15:39,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-07-21 04:15:39,245 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 115 mSDsluCounter, 4644 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:39,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5594 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:39,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-07-21 04:15:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1264. [2022-07-21 04:15:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.688235294117647) internal successors, (1722), 1053 states have internal predecessors, (1722), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-07-21 04:15:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2114 transitions. [2022-07-21 04:15:39,329 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2114 transitions. Word has length 124 [2022-07-21 04:15:39,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:39,330 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2114 transitions. [2022-07-21 04:15:39,331 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:39,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2114 transitions. [2022-07-21 04:15:39,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 04:15:39,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:39,334 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] [2022-07-21 04:15:39,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:39,543 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 [2022-07-21 04:15:39,543 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2026594256, now seen corresponding path program 1 times [2022-07-21 04:15:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:39,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114725198] [2022-07-21 04:15:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:39,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:15:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:15:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:15:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:15:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:15:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:15:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:15:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:15:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:15:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 04:15:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:15:39,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:39,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114725198] [2022-07-21 04:15:39,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114725198] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:39,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897759572] [2022-07-21 04:15:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:39,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:39,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:39,721 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) [2022-07-21 04:15:39,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 04:15:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:39,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:15:39,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:15:39,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:39,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897759572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:39,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:39,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-21 04:15:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294987156] [2022-07-21 04:15:39,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:39,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:15:39,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:15:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:15:39,998 INFO L87 Difference]: Start difference. First operand 1264 states and 2114 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:40,098 INFO L93 Difference]: Finished difference Result 2420 states and 4043 transitions. [2022-07-21 04:15:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:15:40,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2022-07-21 04:15:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:40,104 INFO L225 Difference]: With dead ends: 2420 [2022-07-21 04:15:40,104 INFO L226 Difference]: Without dead ends: 1306 [2022-07-21 04:15:40,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:15:40,110 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 126 mSDsluCounter, 4627 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5576 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:40,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5576 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-07-21 04:15:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1264. [2022-07-21 04:15:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.688235294117647) internal successors, (1722), 1053 states have internal predecessors, (1722), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-07-21 04:15:40,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2114 transitions. [2022-07-21 04:15:40,144 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2114 transitions. Word has length 125 [2022-07-21 04:15:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:40,144 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2114 transitions. [2022-07-21 04:15:40,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:40,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2114 transitions. [2022-07-21 04:15:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 04:15:40,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:40,147 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] [2022-07-21 04:15:40,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:40,362 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 [2022-07-21 04:15:40,362 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:40,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:40,362 INFO L85 PathProgramCache]: Analyzing trace with hash 289412016, now seen corresponding path program 1 times [2022-07-21 04:15:40,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:40,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993493710] [2022-07-21 04:15:40,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:40,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:15:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:15:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:15:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:15:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:15:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:15:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:15:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:15:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:15:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 04:15:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:15:40,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:40,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993493710] [2022-07-21 04:15:40,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993493710] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:40,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727347281] [2022-07-21 04:15:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:40,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:40,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:40,533 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) [2022-07-21 04:15:40,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 04:15:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:40,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:15:40,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:15:40,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:40,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727347281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:40,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:40,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-21 04:15:40,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975787258] [2022-07-21 04:15:40,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:40,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:15:40,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:40,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:15:40,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:15:40,817 INFO L87 Difference]: Start difference. First operand 1264 states and 2114 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:40,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:40,984 INFO L93 Difference]: Finished difference Result 2423 states and 4046 transitions. [2022-07-21 04:15:40,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:15:40,985 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2022-07-21 04:15:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:40,993 INFO L225 Difference]: With dead ends: 2423 [2022-07-21 04:15:40,993 INFO L226 Difference]: Without dead ends: 1309 [2022-07-21 04:15:40,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-07-21 04:15:41,000 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 138 mSDsluCounter, 5532 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6471 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:41,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 6471 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-07-21 04:15:41,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1264. [2022-07-21 04:15:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.688235294117647) internal successors, (1722), 1053 states have internal predecessors, (1722), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-07-21 04:15:41,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2114 transitions. [2022-07-21 04:15:41,031 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2114 transitions. Word has length 125 [2022-07-21 04:15:41,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:41,031 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2114 transitions. [2022-07-21 04:15:41,031 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:41,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2114 transitions. [2022-07-21 04:15:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 04:15:41,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:41,034 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] [2022-07-21 04:15:41,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:41,251 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 [2022-07-21 04:15:41,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:41,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1729460634, now seen corresponding path program 1 times [2022-07-21 04:15:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835293467] [2022-07-21 04:15:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:41,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:15:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:15:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 04:15:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:15:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:15:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:15:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:15:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:15:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:15:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 04:15:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:15:41,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:41,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835293467] [2022-07-21 04:15:41,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835293467] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:41,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410874120] [2022-07-21 04:15:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:41,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:41,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:41,409 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) [2022-07-21 04:15:41,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 04:15:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:41,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:15:41,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 04:15:41,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:41,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410874120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:41,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:41,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:15:41,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797314467] [2022-07-21 04:15:41,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:41,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:15:41,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:41,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:15:41,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:15:41,697 INFO L87 Difference]: Start difference. First operand 1264 states and 2114 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:41,751 INFO L93 Difference]: Finished difference Result 2454 states and 4109 transitions. [2022-07-21 04:15:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:15:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-21 04:15:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:41,759 INFO L225 Difference]: With dead ends: 2454 [2022-07-21 04:15:41,760 INFO L226 Difference]: Without dead ends: 1264 [2022-07-21 04:15:41,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:15:41,764 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 10 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2839 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 [2022-07-21 04:15:41,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2839 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:15:41,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-07-21 04:15:41,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1264. [2022-07-21 04:15:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.6852941176470588) internal successors, (1719), 1053 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-07-21 04:15:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2111 transitions. [2022-07-21 04:15:41,802 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2111 transitions. Word has length 125 [2022-07-21 04:15:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:41,802 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2111 transitions. [2022-07-21 04:15:41,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2111 transitions. [2022-07-21 04:15:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 04:15:41,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:41,805 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] [2022-07-21 04:15:41,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:42,015 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 [2022-07-21 04:15:42,016 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash 978607357, now seen corresponding path program 1 times [2022-07-21 04:15:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:42,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122660265] [2022-07-21 04:15:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:42,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:15:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:15:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:15:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:15:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:15:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:15:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:15:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:15:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 04:15:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 04:15:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:15:42,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:42,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122660265] [2022-07-21 04:15:42,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122660265] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:42,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769113776] [2022-07-21 04:15:42,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:42,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:42,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:42,176 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) [2022-07-21 04:15:42,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 04:15:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:15:42,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:15:42,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:42,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769113776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:42,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:42,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-21 04:15:42,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107749510] [2022-07-21 04:15:42,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:42,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:15:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:15:42,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:15:42,478 INFO L87 Difference]: Start difference. First operand 1264 states and 2111 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:42,628 INFO L93 Difference]: Finished difference Result 2414 states and 4029 transitions. [2022-07-21 04:15:42,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:15:42,629 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2022-07-21 04:15:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:42,635 INFO L225 Difference]: With dead ends: 2414 [2022-07-21 04:15:42,635 INFO L226 Difference]: Without dead ends: 1300 [2022-07-21 04:15:42,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-07-21 04:15:42,640 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 148 mSDsluCounter, 5505 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:42,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 6441 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:15:42,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2022-07-21 04:15:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1264. [2022-07-21 04:15:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.6852941176470588) internal successors, (1719), 1053 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2022-07-21 04:15:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2111 transitions. [2022-07-21 04:15:42,688 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2111 transitions. Word has length 126 [2022-07-21 04:15:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:42,688 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2111 transitions. [2022-07-21 04:15:42,688 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, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2111 transitions. [2022-07-21 04:15:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-21 04:15:42,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:42,692 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] [2022-07-21 04:15:42,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:42,907 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 [2022-07-21 04:15:42,907 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1328556693, now seen corresponding path program 1 times [2022-07-21 04:15:42,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:42,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122194791] [2022-07-21 04:15:42,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:42,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:42,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:15:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:15:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:15:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:15:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:15:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:15:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:15:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:15:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 04:15:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 04:15:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:15:43,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:43,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122194791] [2022-07-21 04:15:43,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122194791] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:43,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013184450] [2022-07-21 04:15:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:43,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:43,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:43,100 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) [2022-07-21 04:15:43,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 04:15:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 04:15:43,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 04:15:43,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:43,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013184450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:43,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:43,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 11 [2022-07-21 04:15:43,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082345957] [2022-07-21 04:15:43,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:43,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:15:43,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:15:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:15:43,334 INFO L87 Difference]: Start difference. First operand 1264 states and 2111 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:43,383 INFO L93 Difference]: Finished difference Result 2505 states and 4198 transitions. [2022-07-21 04:15:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:15:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-07-21 04:15:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:43,400 INFO L225 Difference]: With dead ends: 2505 [2022-07-21 04:15:43,400 INFO L226 Difference]: Without dead ends: 1229 [2022-07-21 04:15:43,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:15:43,405 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 13 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:43,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2838 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:15:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-07-21 04:15:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2022-07-21 04:15:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 988 states have (on average 1.6720647773279351) internal successors, (1652), 1019 states have internal predecessors, (1652), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2022-07-21 04:15:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2040 transitions. [2022-07-21 04:15:43,443 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2040 transitions. Word has length 127 [2022-07-21 04:15:43,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:43,443 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2040 transitions. [2022-07-21 04:15:43,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:43,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2040 transitions. [2022-07-21 04:15:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 04:15:43,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:43,447 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:15:43,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:43,667 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 [2022-07-21 04:15:43,668 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:43,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1824623296, now seen corresponding path program 1 times [2022-07-21 04:15:43,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:43,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833997365] [2022-07-21 04:15:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:43,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:15:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:15:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:15:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:15:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:15:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:15:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:15:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:15:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 04:15:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:15:43,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:43,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833997365] [2022-07-21 04:15:43,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833997365] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:15:43,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258568744] [2022-07-21 04:15:43,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:43,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:15:43,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:15:43,840 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) [2022-07-21 04:15:43,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 04:15:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 04:15:44,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:15:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:15:44,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:15:44,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258568744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:44,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:15:44,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2022-07-21 04:15:44,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547644189] [2022-07-21 04:15:44,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:44,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:15:44,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:44,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:15:44,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:15:44,087 INFO L87 Difference]: Start difference. First operand 1229 states and 2040 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:44,163 INFO L93 Difference]: Finished difference Result 2464 states and 4088 transitions. [2022-07-21 04:15:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:15:44,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2022-07-21 04:15:44,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:44,169 INFO L225 Difference]: With dead ends: 2464 [2022-07-21 04:15:44,170 INFO L226 Difference]: Without dead ends: 1252 [2022-07-21 04:15:44,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:15:44,175 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 138 mSDsluCounter, 4623 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:44,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5582 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:15:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-07-21 04:15:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1222. [2022-07-21 04:15:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 981 states have (on average 1.6676860346585116) internal successors, (1636), 1012 states have internal predecessors, (1636), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2022-07-21 04:15:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 2024 transitions. [2022-07-21 04:15:44,212 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 2024 transitions. Word has length 128 [2022-07-21 04:15:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:44,212 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 2024 transitions. [2022-07-21 04:15:44,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:44,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 2024 transitions. [2022-07-21 04:15:44,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-21 04:15:44,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:44,215 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] [2022-07-21 04:15:44,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-21 04:15:44,435 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 [2022-07-21 04:15:44,435 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:44,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:44,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1668543117, now seen corresponding path program 1 times [2022-07-21 04:15:44,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:44,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972680150] [2022-07-21 04:15:44,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:44,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:15:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:15:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:15:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:15:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:15:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:15:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:15:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:15:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 04:15:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 04:15:44,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:44,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972680150] [2022-07-21 04:15:44,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972680150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:44,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:15:44,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:15:44,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773796082] [2022-07-21 04:15:44,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:44,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:15:44,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:15:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:15:44,597 INFO L87 Difference]: Start difference. First operand 1222 states and 2024 transitions. Second operand has 9 states, 8 states have (on average 11.125) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:48,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:48,854 INFO L93 Difference]: Finished difference Result 2877 states and 4790 transitions. [2022-07-21 04:15:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 04:15:48,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 129 [2022-07-21 04:15:48,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:48,862 INFO L225 Difference]: With dead ends: 2877 [2022-07-21 04:15:48,862 INFO L226 Difference]: Without dead ends: 1757 [2022-07-21 04:15:48,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-21 04:15:48,865 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 1563 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 4632 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 5093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 4632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:48,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 3182 Invalid, 5093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [461 Valid, 4632 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:15:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2022-07-21 04:15:48,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1284. [2022-07-21 04:15:48,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1029 states have (on average 1.6588921282798834) internal successors, (1707), 1060 states have internal predecessors, (1707), 201 states have call successors, (201), 51 states have call predecessors, (201), 53 states have return successors, (220), 196 states have call predecessors, (220), 197 states have call successors, (220) [2022-07-21 04:15:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 2128 transitions. [2022-07-21 04:15:48,941 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 2128 transitions. Word has length 129 [2022-07-21 04:15:48,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:48,941 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 2128 transitions. [2022-07-21 04:15:48,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:15:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 2128 transitions. [2022-07-21 04:15:48,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-21 04:15:48,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:48,944 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] [2022-07-21 04:15:48,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 04:15:48,944 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:48,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1029484769, now seen corresponding path program 1 times [2022-07-21 04:15:48,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:48,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246492013] [2022-07-21 04:15:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:48,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:48,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:15:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:15:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:15:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:15:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:15:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:15:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:15:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:15:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 04:15:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:15:49,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:49,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246492013] [2022-07-21 04:15:49,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246492013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:49,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:15:49,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:15:49,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340285503] [2022-07-21 04:15:49,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:49,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:15:49,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:49,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:15:49,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:15:49,062 INFO L87 Difference]: Start difference. First operand 1284 states and 2128 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:52,113 INFO L93 Difference]: Finished difference Result 2950 states and 4915 transitions. [2022-07-21 04:15:52,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:15:52,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-07-21 04:15:52,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:52,119 INFO L225 Difference]: With dead ends: 2950 [2022-07-21 04:15:52,120 INFO L226 Difference]: Without dead ends: 1674 [2022-07-21 04:15:52,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:15:52,124 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 1482 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:52,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1967 Invalid, 2597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 04:15:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2022-07-21 04:15:52,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1256. [2022-07-21 04:15:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1004 states have (on average 1.654382470119522) internal successors, (1661), 1033 states have internal predecessors, (1661), 200 states have call successors, (200), 51 states have call predecessors, (200), 51 states have return successors, (217), 195 states have call predecessors, (217), 196 states have call successors, (217) [2022-07-21 04:15:52,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 2078 transitions. [2022-07-21 04:15:52,191 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 2078 transitions. Word has length 129 [2022-07-21 04:15:52,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:52,192 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 2078 transitions. [2022-07-21 04:15:52,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:15:52,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 2078 transitions. [2022-07-21 04:15:52,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 04:15:52,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:52,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:15:52,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 04:15:52,195 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:52,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash -833986604, now seen corresponding path program 1 times [2022-07-21 04:15:52,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:52,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074210158] [2022-07-21 04:15:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:52,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:15:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:15:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:15:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:15:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:15:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:15:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:15:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:15:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 04:15:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 04:15:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:15:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:52,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074210158] [2022-07-21 04:15:52,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074210158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:52,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:15:52,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:15:52,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950090813] [2022-07-21 04:15:52,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:52,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:15:52,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:52,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:15:52,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:15:52,321 INFO L87 Difference]: Start difference. First operand 1256 states and 2078 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:15:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:15:57,501 INFO L93 Difference]: Finished difference Result 4267 states and 7347 transitions. [2022-07-21 04:15:57,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:15:57,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2022-07-21 04:15:57,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:15:57,525 INFO L225 Difference]: With dead ends: 4267 [2022-07-21 04:15:57,525 INFO L226 Difference]: Without dead ends: 3099 [2022-07-21 04:15:57,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:15:57,532 INFO L413 NwaCegarLoop]: 1864 mSDtfsCounter, 4435 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4445 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 4453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1519 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:15:57,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 2666 Invalid, 4453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1519 Valid, 2934 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-21 04:15:57,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2022-07-21 04:15:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2379. [2022-07-21 04:15:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 1898 states have (on average 1.6506849315068493) internal successors, (3133), 1954 states have internal predecessors, (3133), 383 states have call successors, (383), 96 states have call predecessors, (383), 97 states have return successors, (443), 376 states have call predecessors, (443), 377 states have call successors, (443) [2022-07-21 04:15:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 3959 transitions. [2022-07-21 04:15:57,721 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 3959 transitions. Word has length 130 [2022-07-21 04:15:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:15:57,721 INFO L495 AbstractCegarLoop]: Abstraction has 2379 states and 3959 transitions. [2022-07-21 04:15:57,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:15:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 3959 transitions. [2022-07-21 04:15:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 04:15:57,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:15:57,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:15:57,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 04:15:57,725 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:15:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:15:57,726 INFO L85 PathProgramCache]: Analyzing trace with hash 783805981, now seen corresponding path program 1 times [2022-07-21 04:15:57,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:15:57,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679946053] [2022-07-21 04:15:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:15:57,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:15:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:15:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:15:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:15:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:15:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:15:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:15:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:15:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:15:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 04:15:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 04:15:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 04:15:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:15:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 04:15:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:15:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:15:57,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:15:57,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679946053] [2022-07-21 04:15:57,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679946053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:15:57,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:15:57,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:15:57,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578312968] [2022-07-21 04:15:57,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:15:57,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:15:57,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:15:57,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:15:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:15:57,863 INFO L87 Difference]: Start difference. First operand 2379 states and 3959 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:16:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:16:03,518 INFO L93 Difference]: Finished difference Result 8258 states and 14477 transitions. [2022-07-21 04:16:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:16:03,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 131 [2022-07-21 04:16:03,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:16:03,552 INFO L225 Difference]: With dead ends: 8258 [2022-07-21 04:16:03,553 INFO L226 Difference]: Without dead ends: 5967 [2022-07-21 04:16:03,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:16:03,567 INFO L413 NwaCegarLoop]: 1909 mSDtfsCounter, 4438 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2980 mSolverCounterSat, 1493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4449 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1493 IncrementalHoareTripleChecker+Valid, 2980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:16:03,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4449 Valid, 2751 Invalid, 4473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1493 Valid, 2980 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-21 04:16:03,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5967 states. [2022-07-21 04:16:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5967 to 4635. [2022-07-21 04:16:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4635 states, 3694 states have (on average 1.6445587439090417) internal successors, (6075), 3804 states have internal predecessors, (6075), 751 states have call successors, (751), 186 states have call predecessors, (751), 189 states have return successors, (944), 740 states have call predecessors, (944), 741 states have call successors, (944) [2022-07-21 04:16:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 7770 transitions. [2022-07-21 04:16:03,917 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 7770 transitions. Word has length 131 [2022-07-21 04:16:03,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:16:03,918 INFO L495 AbstractCegarLoop]: Abstraction has 4635 states and 7770 transitions. [2022-07-21 04:16:03,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:16:03,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 7770 transitions. [2022-07-21 04:16:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-21 04:16:03,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:16:03,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:16:03,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 04:16:03,921 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:16:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:16:03,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1806932081, now seen corresponding path program 1 times [2022-07-21 04:16:03,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:16:03,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069305862] [2022-07-21 04:16:03,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:16:03,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:16:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:16:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:16:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:16:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:16:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:16:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:16:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:16:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:16:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:16:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:16:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 04:16:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 04:16:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 04:16:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:16:04,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:16:04,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069305862] [2022-07-21 04:16:04,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069305862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:16:04,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:16:04,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:16:04,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236120658] [2022-07-21 04:16:04,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:16:04,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:16:04,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:16:04,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:16:04,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:16:04,097 INFO L87 Difference]: Start difference. First operand 4635 states and 7770 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:16:10,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:16:10,383 INFO L93 Difference]: Finished difference Result 16284 states and 29434 transitions. [2022-07-21 04:16:10,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:16:10,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 132 [2022-07-21 04:16:10,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:16:10,480 INFO L225 Difference]: With dead ends: 16284 [2022-07-21 04:16:10,480 INFO L226 Difference]: Without dead ends: 11737 [2022-07-21 04:16:10,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:16:10,507 INFO L413 NwaCegarLoop]: 1911 mSDtfsCounter, 4485 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 2985 mSolverCounterSat, 1511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 4496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1511 IncrementalHoareTripleChecker+Valid, 2985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:16:10,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4497 Valid, 2763 Invalid, 4496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1511 Valid, 2985 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-21 04:16:10,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2022-07-21 04:16:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 9157. [2022-07-21 04:16:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9157 states, 7294 states have (on average 1.6370989854675075) internal successors, (11941), 7512 states have internal predecessors, (11941), 1489 states have call successors, (1489), 366 states have call predecessors, (1489), 373 states have return successors, (2091), 1470 states have call predecessors, (2091), 1471 states have call successors, (2091) [2022-07-21 04:16:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9157 states to 9157 states and 15521 transitions. [2022-07-21 04:16:11,321 INFO L78 Accepts]: Start accepts. Automaton has 9157 states and 15521 transitions. Word has length 132 [2022-07-21 04:16:11,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:16:11,321 INFO L495 AbstractCegarLoop]: Abstraction has 9157 states and 15521 transitions. [2022-07-21 04:16:11,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:16:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 9157 states and 15521 transitions. [2022-07-21 04:16:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 04:16:11,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:16:11,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:16:11,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 04:16:11,324 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:16:11,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:16:11,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1718134024, now seen corresponding path program 1 times [2022-07-21 04:16:11,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:16:11,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417237563] [2022-07-21 04:16:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:16:11,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:16:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:16:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:16:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:16:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:16:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:16:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:16:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:16:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:16:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:16:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:16:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 04:16:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 04:16:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 04:16:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:16:11,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:16:11,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417237563] [2022-07-21 04:16:11,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417237563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:16:11,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:16:11,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:16:11,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936539569] [2022-07-21 04:16:11,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:16:11,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:16:11,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:16:11,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:16:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:16:11,449 INFO L87 Difference]: Start difference. First operand 9157 states and 15521 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:16:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:16:18,873 INFO L93 Difference]: Finished difference Result 32380 states and 61493 transitions. [2022-07-21 04:16:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:16:18,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 133 [2022-07-21 04:16:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:16:18,982 INFO L225 Difference]: With dead ends: 32380 [2022-07-21 04:16:18,982 INFO L226 Difference]: Without dead ends: 23311 [2022-07-21 04:16:19,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:16:19,052 INFO L413 NwaCegarLoop]: 1967 mSDtfsCounter, 4488 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 3009 mSolverCounterSat, 1525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 4534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1525 IncrementalHoareTripleChecker+Valid, 3009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:16:19,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 2873 Invalid, 4534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1525 Valid, 3009 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-21 04:16:19,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23311 states. [2022-07-21 04:16:20,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23311 to 18211. [2022-07-21 04:16:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18211 states, 14502 states have (on average 1.6289477313474003) internal successors, (23623), 14936 states have internal predecessors, (23623), 2967 states have call successors, (2967), 726 states have call predecessors, (2967), 741 states have return successors, (4834), 2932 states have call predecessors, (4834), 2933 states have call successors, (4834) [2022-07-21 04:16:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18211 states to 18211 states and 31424 transitions. [2022-07-21 04:16:20,853 INFO L78 Accepts]: Start accepts. Automaton has 18211 states and 31424 transitions. Word has length 133 [2022-07-21 04:16:20,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:16:20,854 INFO L495 AbstractCegarLoop]: Abstraction has 18211 states and 31424 transitions. [2022-07-21 04:16:20,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:16:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 18211 states and 31424 transitions. [2022-07-21 04:16:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 04:16:20,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:16:20,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:16:20,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 04:16:20,858 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:16:20,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:16:20,858 INFO L85 PathProgramCache]: Analyzing trace with hash -168094902, now seen corresponding path program 1 times [2022-07-21 04:16:20,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:16:20,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784638171] [2022-07-21 04:16:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:16:20,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:16:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:16:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:16:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:16:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:16:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:16:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:16:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:16:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:16:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:16:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:16:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:16:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 04:16:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 04:16:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:16:21,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:16:21,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784638171] [2022-07-21 04:16:21,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784638171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:16:21,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:16:21,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:16:21,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284556253] [2022-07-21 04:16:21,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:16:21,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:16:21,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:16:21,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:16:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:16:21,006 INFO L87 Difference]: Start difference. First operand 18211 states and 31424 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:16:32,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:16:32,000 INFO L93 Difference]: Finished difference Result 64616 states and 132532 transitions. [2022-07-21 04:16:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:16:32,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2022-07-21 04:16:32,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:16:32,262 INFO L225 Difference]: With dead ends: 64616 [2022-07-21 04:16:32,262 INFO L226 Difference]: Without dead ends: 46493 [2022-07-21 04:16:32,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:16:32,450 INFO L413 NwaCegarLoop]: 1972 mSDtfsCounter, 4533 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 1542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4547 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 4557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1542 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:16:32,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4547 Valid, 2892 Invalid, 4557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1542 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-21 04:16:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46493 states. [2022-07-21 04:16:35,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46493 to 36329. [2022-07-21 04:16:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36329 states, 28926 states have (on average 1.6204452741478255) internal successors, (46873), 29792 states have internal predecessors, (46873), 5925 states have call successors, (5925), 1446 states have call predecessors, (5925), 1477 states have return successors, (11741), 5858 states have call predecessors, (11741), 5859 states have call successors, (11741) [2022-07-21 04:16:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36329 states to 36329 states and 64539 transitions. [2022-07-21 04:16:36,301 INFO L78 Accepts]: Start accepts. Automaton has 36329 states and 64539 transitions. Word has length 134 [2022-07-21 04:16:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:16:36,301 INFO L495 AbstractCegarLoop]: Abstraction has 36329 states and 64539 transitions. [2022-07-21 04:16:36,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:16:36,302 INFO L276 IsEmpty]: Start isEmpty. Operand 36329 states and 64539 transitions. [2022-07-21 04:16:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 04:16:36,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:16:36,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:16:36,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 04:16:36,306 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:16:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:16:36,306 INFO L85 PathProgramCache]: Analyzing trace with hash -649175160, now seen corresponding path program 1 times [2022-07-21 04:16:36,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:16:36,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501284713] [2022-07-21 04:16:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:16:36,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:16:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:16:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:16:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:16:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:16:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:16:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:16:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:16:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:16:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:16:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:16:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 04:16:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 04:16:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 04:16:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:16:36,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:16:36,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501284713] [2022-07-21 04:16:36,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501284713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:16:36,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:16:36,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:16:36,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466962627] [2022-07-21 04:16:36,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:16:36,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:16:36,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:16:36,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:16:36,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:16:36,458 INFO L87 Difference]: Start difference. First operand 36329 states and 64539 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:16:48,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:16:48,959 INFO L93 Difference]: Finished difference Result 83311 states and 159218 transitions. [2022-07-21 04:16:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 04:16:48,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2022-07-21 04:16:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:16:49,241 INFO L225 Difference]: With dead ends: 83311 [2022-07-21 04:16:49,241 INFO L226 Difference]: Without dead ends: 47101 [2022-07-21 04:16:49,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-07-21 04:16:49,565 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 4166 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 5506 mSolverCounterSat, 1223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4227 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 6729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1223 IncrementalHoareTripleChecker+Valid, 5506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:16:49,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4227 Valid, 3483 Invalid, 6729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1223 Valid, 5506 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-21 04:16:49,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47101 states. [2022-07-21 04:16:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47101 to 36553. [2022-07-21 04:16:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36553 states, 29086 states have (on average 1.6170322491920512) internal successors, (47033), 29920 states have internal predecessors, (47033), 5925 states have call successors, (5925), 1446 states have call predecessors, (5925), 1541 states have return successors, (11869), 5954 states have call predecessors, (11869), 5859 states have call successors, (11869) [2022-07-21 04:16:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36553 states to 36553 states and 64827 transitions. [2022-07-21 04:16:53,287 INFO L78 Accepts]: Start accepts. Automaton has 36553 states and 64827 transitions. Word has length 134 [2022-07-21 04:16:53,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:16:53,287 INFO L495 AbstractCegarLoop]: Abstraction has 36553 states and 64827 transitions. [2022-07-21 04:16:53,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 04:16:53,287 INFO L276 IsEmpty]: Start isEmpty. Operand 36553 states and 64827 transitions. [2022-07-21 04:16:53,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 04:16:53,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:16:53,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:16:53,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 04:16:53,291 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:16:53,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:16:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash -206474284, now seen corresponding path program 1 times [2022-07-21 04:16:53,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:16:53,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353897817] [2022-07-21 04:16:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:16:53,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:16:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:16:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:16:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:16:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:16:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:16:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:16:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:16:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:16:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:16:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:16:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:16:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 04:16:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 04:16:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 04:16:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:16:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:16:53,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:16:53,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353897817] [2022-07-21 04:16:53,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353897817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:16:53,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:16:53,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 04:16:53,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78402187] [2022-07-21 04:16:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:16:53,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:16:53,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:16:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:16:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:16:53,489 INFO L87 Difference]: Start difference. First operand 36553 states and 64827 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 04:17:04,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:17:04,291 INFO L93 Difference]: Finished difference Result 85353 states and 163443 transitions. [2022-07-21 04:17:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:17:04,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2022-07-21 04:17:04,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:17:04,573 INFO L225 Difference]: With dead ends: 85353 [2022-07-21 04:17:04,573 INFO L226 Difference]: Without dead ends: 48919 [2022-07-21 04:17:04,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:17:04,840 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 1489 mSDsluCounter, 3100 mSDsCounter, 0 mSdLazyCounter, 5548 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 4150 SdHoareTripleChecker+Invalid, 6015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 5548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:17:04,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 4150 Invalid, 6015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 5548 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-21 04:17:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48919 states. [2022-07-21 04:17:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48919 to 37001. [2022-07-21 04:17:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37001 states, 29406 states have (on average 1.6103176222539617) internal successors, (47353), 30240 states have internal predecessors, (47353), 5925 states have call successors, (5925), 1446 states have call predecessors, (5925), 1669 states have return successors, (12189), 6082 states have call predecessors, (12189), 5859 states have call successors, (12189) [2022-07-21 04:17:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37001 states to 37001 states and 65467 transitions. [2022-07-21 04:17:09,037 INFO L78 Accepts]: Start accepts. Automaton has 37001 states and 65467 transitions. Word has length 139 [2022-07-21 04:17:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:17:09,037 INFO L495 AbstractCegarLoop]: Abstraction has 37001 states and 65467 transitions. [2022-07-21 04:17:09,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 04:17:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 37001 states and 65467 transitions. [2022-07-21 04:17:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-21 04:17:09,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:17:09,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:17:09,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 04:17:09,041 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:17:09,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:17:09,042 INFO L85 PathProgramCache]: Analyzing trace with hash -687021055, now seen corresponding path program 1 times [2022-07-21 04:17:09,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:17:09,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401356085] [2022-07-21 04:17:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:17:09,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:17:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:17:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:17:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:17:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:17:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:17:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:17:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:17:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:17:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:17:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:17:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:17:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:17:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 04:17:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 04:17:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:17:09,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:17:09,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401356085] [2022-07-21 04:17:09,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401356085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:17:09,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:17:09,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:17:09,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292626851] [2022-07-21 04:17:09,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:17:09,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:17:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:17:09,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:17:09,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:17:09,202 INFO L87 Difference]: Start difference. First operand 37001 states and 65467 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 04:17:18,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:17:18,632 INFO L93 Difference]: Finished difference Result 84220 states and 159898 transitions. [2022-07-21 04:17:18,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:17:18,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2022-07-21 04:17:18,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:17:18,882 INFO L225 Difference]: With dead ends: 84220 [2022-07-21 04:17:18,882 INFO L226 Difference]: Without dead ends: 47338 [2022-07-21 04:17:19,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:17:19,141 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 1462 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:17:19,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 2108 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 04:17:19,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47338 states. [2022-07-21 04:17:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47338 to 36996. [2022-07-21 04:17:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36996 states, 29403 states have (on average 1.6103118729381356) internal successors, (47348), 30238 states have internal predecessors, (47348), 5923 states have call successors, (5923), 1446 states have call predecessors, (5923), 1669 states have return successors, (12184), 6079 states have call predecessors, (12184), 5857 states have call successors, (12184) [2022-07-21 04:17:23,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36996 states to 36996 states and 65455 transitions. [2022-07-21 04:17:23,219 INFO L78 Accepts]: Start accepts. Automaton has 36996 states and 65455 transitions. Word has length 140 [2022-07-21 04:17:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:17:23,220 INFO L495 AbstractCegarLoop]: Abstraction has 36996 states and 65455 transitions. [2022-07-21 04:17:23,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 04:17:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 36996 states and 65455 transitions. [2022-07-21 04:17:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-21 04:17:23,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:17:23,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:17:23,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 04:17:23,223 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:17:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:17:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1894180733, now seen corresponding path program 1 times [2022-07-21 04:17:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:17:23,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273244333] [2022-07-21 04:17:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:17:23,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:17:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:17:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:17:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:17:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:17:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:17:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:17:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:17:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:17:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:17:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:17:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:17:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 04:17:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 04:17:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 04:17:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:17:23,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:17:23,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273244333] [2022-07-21 04:17:23,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273244333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:17:23,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:17:23,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:17:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836709463] [2022-07-21 04:17:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:17:23,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:17:23,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:17:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:17:23,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:17:23,384 INFO L87 Difference]: Start difference. First operand 36996 states and 65455 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 04:17:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:17:34,218 INFO L93 Difference]: Finished difference Result 86111 states and 164442 transitions. [2022-07-21 04:17:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:17:34,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2022-07-21 04:17:34,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:17:34,464 INFO L225 Difference]: With dead ends: 86111 [2022-07-21 04:17:34,464 INFO L226 Difference]: Without dead ends: 49234 [2022-07-21 04:17:34,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:17:34,933 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 1461 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 4734 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3741 SdHoareTripleChecker+Invalid, 5190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 4734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:17:34,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 3741 Invalid, 5190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 4734 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-21 04:17:34,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49234 states. [2022-07-21 04:17:38,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49234 to 37060. [2022-07-21 04:17:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37060 states, 29467 states have (on average 1.6089863236841213) internal successors, (47412), 30238 states have internal predecessors, (47412), 5923 states have call successors, (5923), 1446 states have call predecessors, (5923), 1669 states have return successors, (12184), 6143 states have call predecessors, (12184), 5857 states have call successors, (12184) [2022-07-21 04:17:39,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37060 states to 37060 states and 65519 transitions. [2022-07-21 04:17:39,135 INFO L78 Accepts]: Start accepts. Automaton has 37060 states and 65519 transitions. Word has length 140 [2022-07-21 04:17:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:17:39,136 INFO L495 AbstractCegarLoop]: Abstraction has 37060 states and 65519 transitions. [2022-07-21 04:17:39,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 04:17:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 37060 states and 65519 transitions. [2022-07-21 04:17:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 04:17:39,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:17:39,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:17:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 04:17:39,140 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:17:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:17:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1099220541, now seen corresponding path program 1 times [2022-07-21 04:17:39,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:17:39,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702958511] [2022-07-21 04:17:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:17:39,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:17:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:17:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:17:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:17:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:17:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:17:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:17:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:17:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:17:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:17:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:17:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 04:17:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 04:17:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 04:17:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 04:17:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 04:17:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:17:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:17:39,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:17:39,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702958511] [2022-07-21 04:17:39,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702958511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:17:39,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:17:39,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:17:39,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394695294] [2022-07-21 04:17:39,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:17:39,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:17:39,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:17:39,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:17:39,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:17:39,283 INFO L87 Difference]: Start difference. First operand 37060 states and 65519 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 04:18:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:18:00,151 INFO L93 Difference]: Finished difference Result 132905 states and 256828 transitions. [2022-07-21 04:18:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 04:18:00,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 149 [2022-07-21 04:18:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:18:00,887 INFO L225 Difference]: With dead ends: 132905 [2022-07-21 04:18:00,887 INFO L226 Difference]: Without dead ends: 95964 [2022-07-21 04:18:01,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:18:01,314 INFO L413 NwaCegarLoop]: 1928 mSDtfsCounter, 4188 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 4069 mSolverCounterSat, 1574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 5643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1574 IncrementalHoareTripleChecker+Valid, 4069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:18:01,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4251 Valid, 3230 Invalid, 5643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1574 Valid, 4069 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-21 04:18:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95964 states. [2022-07-21 04:18:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95964 to 76802. [2022-07-21 04:18:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76802 states, 60991 states have (on average 1.5674279811775509) internal successors, (95599), 62469 states have internal predecessors, (95599), 12029 states have call successors, (12029), 3238 states have call predecessors, (12029), 3781 states have return successors, (24816), 12630 states have call predecessors, (24816), 11899 states have call successors, (24816) [2022-07-21 04:18:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76802 states to 76802 states and 132444 transitions. [2022-07-21 04:18:10,250 INFO L78 Accepts]: Start accepts. Automaton has 76802 states and 132444 transitions. Word has length 149 [2022-07-21 04:18:10,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:18:10,251 INFO L495 AbstractCegarLoop]: Abstraction has 76802 states and 132444 transitions. [2022-07-21 04:18:10,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 04:18:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 76802 states and 132444 transitions. [2022-07-21 04:18:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 04:18:10,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:18:10,255 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:18:10,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 04:18:10,255 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:18:10,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:18:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash 886881038, now seen corresponding path program 1 times [2022-07-21 04:18:10,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:18:10,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797472033] [2022-07-21 04:18:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:18:10,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:18:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:18:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:18:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:18:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:18:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:18:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:18:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:18:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:18:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:18:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:18:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:18:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 04:18:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 04:18:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 04:18:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 04:18:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:18:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:18:10,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:18:10,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797472033] [2022-07-21 04:18:10,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797472033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:18:10,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:18:10,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:18:10,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398982392] [2022-07-21 04:18:10,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:18:10,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:18:10,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:18:10,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:18:10,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:18:10,436 INFO L87 Difference]: Start difference. First operand 76802 states and 132444 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)