./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_spec3_product23.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 f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 14:44:08,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 14:44:08,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 14:44:08,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 14:44:08,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 14:44:08,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 14:44:08,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 14:44:08,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 14:44:08,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 14:44:08,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 14:44:08,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 14:44:08,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 14:44:08,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 14:44:08,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 14:44:08,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 14:44:08,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 14:44:08,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 14:44:08,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 14:44:08,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 14:44:08,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 14:44:08,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 14:44:08,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 14:44:08,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 14:44:08,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 14:44:08,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 14:44:08,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 14:44:08,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 14:44:08,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 14:44:08,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 14:44:08,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 14:44:08,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 14:44:08,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 14:44:08,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 14:44:08,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 14:44:08,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 14:44:08,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 14:44:08,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 14:44:08,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 14:44:08,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 14:44:08,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 14:44:08,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 14:44:08,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 14:44:08,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 14:44:08,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 14:44:08,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 14:44:08,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 14:44:08,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 14:44:08,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 14:44:08,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 14:44:08,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 14:44:08,836 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 14:44:08,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 14:44:08,836 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 14:44:08,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 14:44:08,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 14:44:08,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 14:44:08,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 14:44:08,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 14:44:08,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 14:44:08,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 14:44:08,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 14:44:08,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 14:44:08,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 14:44:08,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 14:44:08,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 14:44:08,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 14:44:08,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:44:08,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 14:44:08,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 14:44:08,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 14:44:08,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 14:44:08,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 14:44:08,839 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 14:44:08,839 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 14:44:08,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 14:44:08,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 14:44:08,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c [2021-12-17 14:44:08,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 14:44:08,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 14:44:08,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 14:44:08,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 14:44:08,987 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 14:44:08,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2021-12-17 14:44:09,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8a70dab9/87c489faf3e44ba9b4fda5e169df3aa9/FLAG25638319c [2021-12-17 14:44:09,506 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 14:44:09,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2021-12-17 14:44:09,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8a70dab9/87c489faf3e44ba9b4fda5e169df3aa9/FLAG25638319c [2021-12-17 14:44:09,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8a70dab9/87c489faf3e44ba9b4fda5e169df3aa9 [2021-12-17 14:44:09,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 14:44:09,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 14:44:09,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 14:44:09,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 14:44:09,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 14:44:09,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:44:09" (1/1) ... [2021-12-17 14:44:09,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ea68cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:09, skipping insertion in model container [2021-12-17 14:44:09,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:44:09" (1/1) ... [2021-12-17 14:44:09,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 14:44:09,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 14:44:09,769 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_spec3_product23.cil.c[5798,5811] [2021-12-17 14:44:09,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:44:09,978 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 14:44:09,995 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_spec3_product23.cil.c[5798,5811] [2021-12-17 14:44:10,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:44:10,055 INFO L208 MainTranslator]: Completed translation [2021-12-17 14:44:10,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10 WrapperNode [2021-12-17 14:44:10,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 14:44:10,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 14:44:10,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 14:44:10,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 14:44:10,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (1/1) ... [2021-12-17 14:44:10,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (1/1) ... [2021-12-17 14:44:10,119 INFO L137 Inliner]: procedures = 94, calls = 353, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 945 [2021-12-17 14:44:10,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 14:44:10,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 14:44:10,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 14:44:10,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 14:44:10,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (1/1) ... [2021-12-17 14:44:10,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (1/1) ... [2021-12-17 14:44:10,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (1/1) ... [2021-12-17 14:44:10,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (1/1) ... [2021-12-17 14:44:10,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (1/1) ... [2021-12-17 14:44:10,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (1/1) ... [2021-12-17 14:44:10,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (1/1) ... [2021-12-17 14:44:10,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 14:44:10,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 14:44:10,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 14:44:10,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 14:44:10,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (1/1) ... [2021-12-17 14:44:10,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:44:10,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:44:10,272 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) [2021-12-17 14:44:10,279 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 [2021-12-17 14:44:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 14:44:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-17 14:44:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-17 14:44:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-12-17 14:44:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-12-17 14:44:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-17 14:44:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-17 14:44:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-17 14:44:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-17 14:44:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-17 14:44:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-17 14:44:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-17 14:44:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-17 14:44:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-17 14:44:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-17 14:44:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-17 14:44:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-17 14:44:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-17 14:44:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-17 14:44:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-17 14:44:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-17 14:44:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-17 14:44:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-17 14:44:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-17 14:44:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-17 14:44:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-17 14:44:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-17 14:44:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-17 14:44:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-17 14:44:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-17 14:44:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-17 14:44:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2021-12-17 14:44:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2021-12-17 14:44:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-17 14:44:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-17 14:44:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-17 14:44:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-17 14:44:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2021-12-17 14:44:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2021-12-17 14:44:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-17 14:44:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-17 14:44:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-17 14:44:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-17 14:44:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-17 14:44:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-17 14:44:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 14:44:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-17 14:44:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-17 14:44:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-17 14:44:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-17 14:44:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-17 14:44:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-17 14:44:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-17 14:44:10,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-17 14:44:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2021-12-17 14:44:10,306 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2021-12-17 14:44:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 14:44:10,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 14:44:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-17 14:44:10,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-17 14:44:10,408 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 14:44:10,409 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 14:44:11,119 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 14:44:11,134 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 14:44:11,134 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 14:44:11,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:44:11 BoogieIcfgContainer [2021-12-17 14:44:11,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 14:44:11,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 14:44:11,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 14:44:11,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 14:44:11,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:44:09" (1/3) ... [2021-12-17 14:44:11,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b93e214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:44:11, skipping insertion in model container [2021-12-17 14:44:11,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:44:10" (2/3) ... [2021-12-17 14:44:11,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b93e214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:44:11, skipping insertion in model container [2021-12-17 14:44:11,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:44:11" (3/3) ... [2021-12-17 14:44:11,144 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2021-12-17 14:44:11,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 14:44:11,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 14:44:11,198 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 14:44:11,205 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 14:44:11,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 14:44:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 612 states, 469 states have (on average 1.6609808102345416) internal successors, (779), 487 states have internal predecessors, (779), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2021-12-17 14:44:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 14:44:11,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:11,259 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:11,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:11,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:11,263 INFO L85 PathProgramCache]: Analyzing trace with hash 507112245, now seen corresponding path program 1 times [2021-12-17 14:44:11,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:11,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392411646] [2021-12-17 14:44:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:11,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:44:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:44:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 14:44:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:44:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:44:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:11,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 14:44:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:12,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:44:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:12,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:12,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392411646] [2021-12-17 14:44:12,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392411646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:12,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:12,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:44:12,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520222243] [2021-12-17 14:44:12,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:12,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:44:12,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:12,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:44:12,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:44:12,049 INFO L87 Difference]: Start difference. First operand has 612 states, 469 states have (on average 1.6609808102345416) internal successors, (779), 487 states have internal predecessors, (779), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:44:17,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:17,487 INFO L93 Difference]: Finished difference Result 1575 states and 2698 transitions. [2021-12-17 14:44:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:44:17,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2021-12-17 14:44:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:17,504 INFO L225 Difference]: With dead ends: 1575 [2021-12-17 14:44:17,504 INFO L226 Difference]: Without dead ends: 963 [2021-12-17 14:44:17,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-17 14:44:17,516 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 1207 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 5619 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 5977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 5619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:17,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 4005 Invalid, 5977 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [358 Valid, 5619 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-17 14:44:17,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-12-17 14:44:17,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 615. [2021-12-17 14:44:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 472 states have (on average 1.652542372881356) internal successors, (780), 490 states have internal predecessors, (780), 114 states have call successors, (114), 28 states have call predecessors, (114), 28 states have return successors, (113), 109 states have call predecessors, (113), 111 states have call successors, (113) [2021-12-17 14:44:17,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1007 transitions. [2021-12-17 14:44:17,656 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1007 transitions. Word has length 115 [2021-12-17 14:44:17,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:17,657 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 1007 transitions. [2021-12-17 14:44:17,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:44:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1007 transitions. [2021-12-17 14:44:17,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 14:44:17,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:17,661 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:17,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 14:44:17,662 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:17,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:17,662 INFO L85 PathProgramCache]: Analyzing trace with hash 122805697, now seen corresponding path program 1 times [2021-12-17 14:44:17,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:17,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439822241] [2021-12-17 14:44:17,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:17,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:44:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:44:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 14:44:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:44:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:44:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:44:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 14:44:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:44:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:17,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:17,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439822241] [2021-12-17 14:44:17,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439822241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:17,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:17,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:44:17,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509031425] [2021-12-17 14:44:17,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:17,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:44:17,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:17,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:44:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:44:17,947 INFO L87 Difference]: Start difference. First operand 615 states and 1007 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:22,085 INFO L93 Difference]: Finished difference Result 1556 states and 2627 transitions. [2021-12-17 14:44:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:44:22,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2021-12-17 14:44:22,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:22,098 INFO L225 Difference]: With dead ends: 1556 [2021-12-17 14:44:22,098 INFO L226 Difference]: Without dead ends: 926 [2021-12-17 14:44:22,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:44:22,119 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 2216 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 3463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:22,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2334 Valid, 2235 Invalid, 3463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-17 14:44:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-12-17 14:44:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 591. [2021-12-17 14:44:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 451 states have (on average 1.6430155210643016) internal successors, (741), 467 states have internal predecessors, (741), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-17 14:44:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 964 transitions. [2021-12-17 14:44:22,215 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 964 transitions. Word has length 116 [2021-12-17 14:44:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:22,217 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 964 transitions. [2021-12-17 14:44:22,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 964 transitions. [2021-12-17 14:44:22,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 14:44:22,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:22,223 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:22,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 14:44:22,223 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:22,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:22,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1001447589, now seen corresponding path program 1 times [2021-12-17 14:44:22,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:22,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367553214] [2021-12-17 14:44:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:22,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:44:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 14:44:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:44:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:44:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:44:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 14:44:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:44:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:22,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:22,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367553214] [2021-12-17 14:44:22,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367553214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:22,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:22,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:44:22,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593333632] [2021-12-17 14:44:22,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:22,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:44:22,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:22,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:44:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:44:22,496 INFO L87 Difference]: Start difference. First operand 591 states and 964 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:25,983 INFO L93 Difference]: Finished difference Result 1501 states and 2533 transitions. [2021-12-17 14:44:25,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:44:25,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2021-12-17 14:44:25,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:26,001 INFO L225 Difference]: With dead ends: 1501 [2021-12-17 14:44:26,001 INFO L226 Difference]: Without dead ends: 926 [2021-12-17 14:44:26,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:44:26,009 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 1672 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:26,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1790 Valid, 2220 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-17 14:44:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-12-17 14:44:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 591. [2021-12-17 14:44:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 451 states have (on average 1.6407982261640799) internal successors, (740), 467 states have internal predecessors, (740), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-17 14:44:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 963 transitions. [2021-12-17 14:44:26,062 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 963 transitions. Word has length 116 [2021-12-17 14:44:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:26,062 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 963 transitions. [2021-12-17 14:44:26,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 963 transitions. [2021-12-17 14:44:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-17 14:44:26,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:26,065 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:26,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 14:44:26,065 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:26,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1875165567, now seen corresponding path program 1 times [2021-12-17 14:44:26,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:26,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199904201] [2021-12-17 14:44:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:26,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:44:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-17 14:44:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-17 14:44:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:44:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:44:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 14:44:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:44:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:26,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:26,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199904201] [2021-12-17 14:44:26,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199904201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:26,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:26,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:44:26,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157937343] [2021-12-17 14:44:26,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:26,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:44:26,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:26,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:44:26,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:44:26,402 INFO L87 Difference]: Start difference. First operand 591 states and 963 transitions. Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:44:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:31,074 INFO L93 Difference]: Finished difference Result 1519 states and 2555 transitions. [2021-12-17 14:44:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:44:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2021-12-17 14:44:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:31,098 INFO L225 Difference]: With dead ends: 1519 [2021-12-17 14:44:31,098 INFO L226 Difference]: Without dead ends: 920 [2021-12-17 14:44:31,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-17 14:44:31,120 INFO L933 BasicCegarLoop]: 939 mSDtfsCounter, 2264 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 5153 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 3664 SdHoareTripleChecker+Invalid, 5984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 5153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:31,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2382 Valid, 3664 Invalid, 5984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 5153 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-17 14:44:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-12-17 14:44:31,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 585. [2021-12-17 14:44:31,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 445 states have (on average 1.6337078651685393) internal successors, (727), 461 states have internal predecessors, (727), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-17 14:44:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 950 transitions. [2021-12-17 14:44:31,185 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 950 transitions. Word has length 117 [2021-12-17 14:44:31,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:31,185 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 950 transitions. [2021-12-17 14:44:31,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:44:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 950 transitions. [2021-12-17 14:44:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-17 14:44:31,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:31,188 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:31,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 14:44:31,188 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:31,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash 162097229, now seen corresponding path program 1 times [2021-12-17 14:44:31,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:31,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313330473] [2021-12-17 14:44:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:31,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:44:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:44:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:44:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:44:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:44:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:44:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:44:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:31,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:31,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313330473] [2021-12-17 14:44:31,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313330473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:31,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:31,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:44:31,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463430607] [2021-12-17 14:44:31,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:31,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:44:31,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:31,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:44:31,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:44:31,498 INFO L87 Difference]: Start difference. First operand 585 states and 950 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:35,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:35,599 INFO L93 Difference]: Finished difference Result 1489 states and 2504 transitions. [2021-12-17 14:44:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:44:35,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2021-12-17 14:44:35,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:35,609 INFO L225 Difference]: With dead ends: 1489 [2021-12-17 14:44:35,609 INFO L226 Difference]: Without dead ends: 920 [2021-12-17 14:44:35,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:44:35,612 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 1075 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:35,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 2270 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-17 14:44:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-12-17 14:44:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 585. [2021-12-17 14:44:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 445 states have (on average 1.6314606741573034) internal successors, (726), 461 states have internal predecessors, (726), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-17 14:44:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 949 transitions. [2021-12-17 14:44:35,657 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 949 transitions. Word has length 118 [2021-12-17 14:44:35,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:35,659 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 949 transitions. [2021-12-17 14:44:35,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:35,659 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 949 transitions. [2021-12-17 14:44:35,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-17 14:44:35,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:35,662 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:35,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 14:44:35,662 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:35,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1443429858, now seen corresponding path program 1 times [2021-12-17 14:44:35,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:35,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11494903] [2021-12-17 14:44:35,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:35,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:44:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-17 14:44:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:44:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:44:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:44:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:44:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:44:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:35,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:35,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11494903] [2021-12-17 14:44:35,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11494903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:35,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:35,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:44:35,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763459217] [2021-12-17 14:44:35,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:35,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:44:35,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:35,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:44:35,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:44:35,999 INFO L87 Difference]: Start difference. First operand 585 states and 949 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:44:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:41,079 INFO L93 Difference]: Finished difference Result 1507 states and 2524 transitions. [2021-12-17 14:44:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:44:41,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 119 [2021-12-17 14:44:41,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:41,086 INFO L225 Difference]: With dead ends: 1507 [2021-12-17 14:44:41,086 INFO L226 Difference]: Without dead ends: 914 [2021-12-17 14:44:41,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-17 14:44:41,103 INFO L933 BasicCegarLoop]: 944 mSDtfsCounter, 2201 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 5929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:41,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2319 Valid, 3768 Invalid, 5929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 5103 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-17 14:44:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-12-17 14:44:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 579. [2021-12-17 14:44:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 439 states have (on average 1.6241457858769932) internal successors, (713), 455 states have internal predecessors, (713), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-17 14:44:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 936 transitions. [2021-12-17 14:44:41,150 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 936 transitions. Word has length 119 [2021-12-17 14:44:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:41,150 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 936 transitions. [2021-12-17 14:44:41,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:44:41,150 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 936 transitions. [2021-12-17 14:44:41,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-17 14:44:41,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:41,153 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:41,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 14:44:41,153 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:41,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1585259534, now seen corresponding path program 1 times [2021-12-17 14:44:41,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:41,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878847111] [2021-12-17 14:44:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:41,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:44:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 14:44:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:44:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 14:44:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:44:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:44:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 14:44:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:41,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:41,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878847111] [2021-12-17 14:44:41,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878847111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:41,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:41,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:44:41,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079747539] [2021-12-17 14:44:41,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:41,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:44:41,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:41,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:44:41,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:44:41,422 INFO L87 Difference]: Start difference. First operand 579 states and 936 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:44,536 INFO L93 Difference]: Finished difference Result 1477 states and 2475 transitions. [2021-12-17 14:44:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:44:44,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2021-12-17 14:44:44,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:44,541 INFO L225 Difference]: With dead ends: 1477 [2021-12-17 14:44:44,541 INFO L226 Difference]: Without dead ends: 914 [2021-12-17 14:44:44,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:44:44,544 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 1601 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:44,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1718 Valid, 2183 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 14:44:44,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-12-17 14:44:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 579. [2021-12-17 14:44:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 439 states have (on average 1.6218678815489749) internal successors, (712), 455 states have internal predecessors, (712), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-17 14:44:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 935 transitions. [2021-12-17 14:44:44,608 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 935 transitions. Word has length 120 [2021-12-17 14:44:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:44,608 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 935 transitions. [2021-12-17 14:44:44,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 935 transitions. [2021-12-17 14:44:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-17 14:44:44,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:44,611 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:44,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 14:44:44,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash 406721730, now seen corresponding path program 1 times [2021-12-17 14:44:44,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:44,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138388308] [2021-12-17 14:44:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:44,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 14:44:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 14:44:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:44:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:44:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:44:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:44:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:44:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:44,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:44,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138388308] [2021-12-17 14:44:44,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138388308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:44,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:44,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:44:44,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181165604] [2021-12-17 14:44:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:44,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:44:44,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:44:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:44:44,886 INFO L87 Difference]: Start difference. First operand 579 states and 935 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:44:50,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:50,318 INFO L93 Difference]: Finished difference Result 1495 states and 2493 transitions. [2021-12-17 14:44:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:44:50,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 121 [2021-12-17 14:44:50,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:50,322 INFO L225 Difference]: With dead ends: 1495 [2021-12-17 14:44:50,322 INFO L226 Difference]: Without dead ends: 908 [2021-12-17 14:44:50,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-17 14:44:50,324 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 1609 mSDsluCounter, 2894 mSDsCounter, 0 mSdLazyCounter, 5170 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 3827 SdHoareTripleChecker+Invalid, 5759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 5170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:50,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1727 Valid, 3827 Invalid, 5759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 5170 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-17 14:44:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-12-17 14:44:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 573. [2021-12-17 14:44:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 433 states have (on average 1.6143187066974596) internal successors, (699), 449 states have internal predecessors, (699), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-17 14:44:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 922 transitions. [2021-12-17 14:44:50,381 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 922 transitions. Word has length 121 [2021-12-17 14:44:50,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:50,382 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 922 transitions. [2021-12-17 14:44:50,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:44:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 922 transitions. [2021-12-17 14:44:50,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-17 14:44:50,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:50,385 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:50,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 14:44:50,386 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:50,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2068183009, now seen corresponding path program 1 times [2021-12-17 14:44:50,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:50,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013557920] [2021-12-17 14:44:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:50,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 14:44:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 14:44:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:44:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:44:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:44:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:44:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:44:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:50,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:50,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013557920] [2021-12-17 14:44:50,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013557920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:50,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:50,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:44:50,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912244887] [2021-12-17 14:44:50,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:50,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:44:50,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:50,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:44:50,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:44:50,671 INFO L87 Difference]: Start difference. First operand 573 states and 922 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:54,316 INFO L93 Difference]: Finished difference Result 1465 states and 2446 transitions. [2021-12-17 14:44:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:44:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2021-12-17 14:44:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:54,321 INFO L225 Difference]: With dead ends: 1465 [2021-12-17 14:44:54,321 INFO L226 Difference]: Without dead ends: 908 [2021-12-17 14:44:54,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:44:54,325 INFO L933 BasicCegarLoop]: 907 mSDtfsCounter, 1010 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:54,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 2287 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 2640 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 14:44:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-12-17 14:44:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 573. [2021-12-17 14:44:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 433 states have (on average 1.6120092378752886) internal successors, (698), 449 states have internal predecessors, (698), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-17 14:44:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 921 transitions. [2021-12-17 14:44:54,461 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 921 transitions. Word has length 121 [2021-12-17 14:44:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:54,461 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 921 transitions. [2021-12-17 14:44:54,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 921 transitions. [2021-12-17 14:44:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-17 14:44:54,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:54,485 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:54,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 14:44:54,485 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:54,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1120726636, now seen corresponding path program 1 times [2021-12-17 14:44:54,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:54,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877605263] [2021-12-17 14:44:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:54,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-17 14:44:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-17 14:44:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:44:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:44:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:44:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:44:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:44:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:54,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:54,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877605263] [2021-12-17 14:44:54,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877605263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:54,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:54,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:44:54,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083340849] [2021-12-17 14:44:54,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:54,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:44:54,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:54,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:44:54,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:44:54,780 INFO L87 Difference]: Start difference. First operand 573 states and 921 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:59,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:59,203 INFO L93 Difference]: Finished difference Result 1477 states and 2456 transitions. [2021-12-17 14:44:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:44:59,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2021-12-17 14:44:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:59,220 INFO L225 Difference]: With dead ends: 1477 [2021-12-17 14:44:59,220 INFO L226 Difference]: Without dead ends: 920 [2021-12-17 14:44:59,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:44:59,222 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 1547 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 3204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:59,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1665 Valid, 2157 Invalid, 3204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-17 14:44:59,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-12-17 14:44:59,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 579. [2021-12-17 14:44:59,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 439 states have (on average 1.603644646924829) internal successors, (704), 455 states have internal predecessors, (704), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-17 14:44:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 927 transitions. [2021-12-17 14:44:59,307 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 927 transitions. Word has length 122 [2021-12-17 14:44:59,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:59,307 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 927 transitions. [2021-12-17 14:44:59,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 14:44:59,307 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 927 transitions. [2021-12-17 14:44:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-17 14:44:59,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:59,309 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:44:59,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 14:44:59,310 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:59,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1707002858, now seen corresponding path program 1 times [2021-12-17 14:44:59,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:59,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195287473] [2021-12-17 14:44:59,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:59,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:44:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-17 14:44:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-17 14:44:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:44:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:44:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:44:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:44:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:44:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:44:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:44:59,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:59,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195287473] [2021-12-17 14:44:59,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195287473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:59,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:59,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:44:59,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182039464] [2021-12-17 14:44:59,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:59,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:44:59,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:44:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:44:59,592 INFO L87 Difference]: Start difference. First operand 579 states and 927 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:45:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:45:03,741 INFO L93 Difference]: Finished difference Result 1480 states and 2457 transitions. [2021-12-17 14:45:03,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 14:45:03,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 122 [2021-12-17 14:45:03,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:45:03,746 INFO L225 Difference]: With dead ends: 1480 [2021-12-17 14:45:03,746 INFO L226 Difference]: Without dead ends: 908 [2021-12-17 14:45:03,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:45:03,765 INFO L933 BasicCegarLoop]: 913 mSDtfsCounter, 1012 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 5141 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 5496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 5141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:45:03,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 3894 Invalid, 5496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 5141 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-17 14:45:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-12-17 14:45:03,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 573. [2021-12-17 14:45:03,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 433 states have (on average 1.6096997690531178) internal successors, (697), 449 states have internal predecessors, (697), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-17 14:45:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 920 transitions. [2021-12-17 14:45:03,822 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 920 transitions. Word has length 122 [2021-12-17 14:45:03,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:45:03,822 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 920 transitions. [2021-12-17 14:45:03,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:45:03,823 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 920 transitions. [2021-12-17 14:45:03,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 14:45:03,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:45:03,824 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:45:03,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 14:45:03,825 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:45:03,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:45:03,825 INFO L85 PathProgramCache]: Analyzing trace with hash -796988665, now seen corresponding path program 1 times [2021-12-17 14:45:03,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:45:03,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166170252] [2021-12-17 14:45:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:03,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:45:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:03,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:45:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:45:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:45:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:45:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:45:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:45:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:45:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:45:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:45:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-17 14:45:04,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:45:04,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166170252] [2021-12-17 14:45:04,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166170252] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:45:04,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273628749] [2021-12-17 14:45:04,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:04,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:45:04,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:45:04,099 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) [2021-12-17 14:45:04,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 14:45:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:04,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 14:45:04,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:45:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:45:04,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:45:04,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273628749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:45:04,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:45:04,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 14:45:04,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208737821] [2021-12-17 14:45:04,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:45:04,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:45:04,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:45:04,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:45:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:45:04,549 INFO L87 Difference]: Start difference. First operand 573 states and 920 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:45:04,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:45:04,652 INFO L93 Difference]: Finished difference Result 1630 states and 2648 transitions. [2021-12-17 14:45:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:45:04,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2021-12-17 14:45:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:45:04,658 INFO L225 Difference]: With dead ends: 1630 [2021-12-17 14:45:04,658 INFO L226 Difference]: Without dead ends: 1075 [2021-12-17 14:45:04,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:45:04,660 INFO L933 BasicCegarLoop]: 1645 mSDtfsCounter, 847 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:45:04,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 2461 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:45:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-12-17 14:45:04,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1060. [2021-12-17 14:45:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 808 states have (on average 1.6212871287128714) internal successors, (1310), 839 states have internal predecessors, (1310), 201 states have call successors, (201), 51 states have call predecessors, (201), 50 states have return successors, (203), 195 states have call predecessors, (203), 198 states have call successors, (203) [2021-12-17 14:45:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1714 transitions. [2021-12-17 14:45:04,752 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1714 transitions. Word has length 123 [2021-12-17 14:45:04,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:45:04,753 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1714 transitions. [2021-12-17 14:45:04,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:45:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1714 transitions. [2021-12-17 14:45:04,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 14:45:04,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:45:04,757 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:45:04,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 14:45:04,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-17 14:45:04,974 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:45:04,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:45:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1680226773, now seen corresponding path program 1 times [2021-12-17 14:45:04,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:45:04,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147945944] [2021-12-17 14:45:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:04,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:45:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:45:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:45:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:45:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:45:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:45:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:45:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:45:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:45:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:45:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-17 14:45:05,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:45:05,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147945944] [2021-12-17 14:45:05,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147945944] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:45:05,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418050478] [2021-12-17 14:45:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:05,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:45:05,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:45:05,274 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) [2021-12-17 14:45:05,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 14:45:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:05,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 14:45:05,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:45:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:45:05,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:45:05,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418050478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:45:05,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:45:05,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 14:45:05,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809249994] [2021-12-17 14:45:05,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:45:05,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:45:05,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:45:05,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:45:05,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:45:05,729 INFO L87 Difference]: Start difference. First operand 1060 states and 1714 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:45:05,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:45:05,877 INFO L93 Difference]: Finished difference Result 2604 states and 4238 transitions. [2021-12-17 14:45:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:45:05,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2021-12-17 14:45:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:45:05,883 INFO L225 Difference]: With dead ends: 2604 [2021-12-17 14:45:05,884 INFO L226 Difference]: Without dead ends: 1562 [2021-12-17 14:45:05,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:45:05,888 INFO L933 BasicCegarLoop]: 1585 mSDtfsCounter, 847 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:45:05,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 2401 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:45:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-12-17 14:45:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1514. [2021-12-17 14:45:06,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1156 states have (on average 1.6323529411764706) internal successors, (1887), 1202 states have internal predecessors, (1887), 286 states have call successors, (286), 71 states have call predecessors, (286), 71 states have return successors, (293), 279 states have call predecessors, (293), 283 states have call successors, (293) [2021-12-17 14:45:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2466 transitions. [2021-12-17 14:45:06,022 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2466 transitions. Word has length 124 [2021-12-17 14:45:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:45:06,023 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 2466 transitions. [2021-12-17 14:45:06,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-17 14:45:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2466 transitions. [2021-12-17 14:45:06,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-17 14:45:06,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:45:06,028 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:45:06,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 14:45:06,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-17 14:45:06,246 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:45:06,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:45:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash -682983758, now seen corresponding path program 1 times [2021-12-17 14:45:06,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:45:06,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418670719] [2021-12-17 14:45:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:06,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:45:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:45:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:45:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:45:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:45:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:45:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:45:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:45:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:45:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:45:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:45:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:45:06,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:45:06,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418670719] [2021-12-17 14:45:06,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418670719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:45:06,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:45:06,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:45:06,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476013345] [2021-12-17 14:45:06,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:45:06,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:45:06,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:45:06,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:45:06,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:45:06,525 INFO L87 Difference]: Start difference. First operand 1514 states and 2466 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:45:21,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:45:21,189 INFO L93 Difference]: Finished difference Result 7230 states and 13072 transitions. [2021-12-17 14:45:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 14:45:21,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 126 [2021-12-17 14:45:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:45:21,237 INFO L225 Difference]: With dead ends: 7230 [2021-12-17 14:45:21,238 INFO L226 Difference]: Without dead ends: 5734 [2021-12-17 14:45:21,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-12-17 14:45:21,248 INFO L933 BasicCegarLoop]: 1210 mSDtfsCounter, 2968 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 8707 mSolverCounterSat, 2030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3093 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 10737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2030 IncrementalHoareTripleChecker+Valid, 8707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:45:21,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3093 Valid, 4343 Invalid, 10737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2030 Valid, 8707 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2021-12-17 14:45:21,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-12-17 14:45:21,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 3565. [2021-12-17 14:45:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3565 states, 2571 states have (on average 1.6009334889148192) internal successors, (4116), 2755 states have internal predecessors, (4116), 819 states have call successors, (819), 136 states have call predecessors, (819), 174 states have return successors, (1256), 817 states have call predecessors, (1256), 815 states have call successors, (1256) [2021-12-17 14:45:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 6191 transitions. [2021-12-17 14:45:21,793 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 6191 transitions. Word has length 126 [2021-12-17 14:45:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:45:21,793 INFO L470 AbstractCegarLoop]: Abstraction has 3565 states and 6191 transitions. [2021-12-17 14:45:21,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-17 14:45:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 6191 transitions. [2021-12-17 14:45:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 14:45:21,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:45:21,798 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:45:21,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 14:45:21,798 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:45:21,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:45:21,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2036658098, now seen corresponding path program 1 times [2021-12-17 14:45:21,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:45:21,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912237075] [2021-12-17 14:45:21,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:21,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:45:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:21,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:45:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:21,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:45:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:45:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:45:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:45:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:45:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:45:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:45:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:45:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:45:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-17 14:45:22,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:45:22,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912237075] [2021-12-17 14:45:22,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912237075] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:45:22,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179860451] [2021-12-17 14:45:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:22,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:45:22,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:45:22,038 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) [2021-12-17 14:45:22,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 14:45:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:22,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 14:45:22,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:45:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 14:45:22,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:45:22,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179860451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:45:22,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:45:22,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 14:45:22,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011041301] [2021-12-17 14:45:22,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:45:22,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:45:22,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:45:22,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:45:22,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:45:22,434 INFO L87 Difference]: Start difference. First operand 3565 states and 6191 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:45:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:45:23,071 INFO L93 Difference]: Finished difference Result 7991 states and 14207 transitions. [2021-12-17 14:45:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:45:23,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2021-12-17 14:45:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:45:23,094 INFO L225 Difference]: With dead ends: 7991 [2021-12-17 14:45:23,095 INFO L226 Difference]: Without dead ends: 4444 [2021-12-17 14:45:23,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:45:23,114 INFO L933 BasicCegarLoop]: 990 mSDtfsCounter, 120 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:45:23,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 1887 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:45:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2021-12-17 14:45:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3593. [2021-12-17 14:45:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 2595 states have (on average 1.596917148362235) internal successors, (4144), 2779 states have internal predecessors, (4144), 823 states have call successors, (823), 136 states have call predecessors, (823), 174 states have return successors, (1262), 821 states have call predecessors, (1262), 819 states have call successors, (1262) [2021-12-17 14:45:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 6229 transitions. [2021-12-17 14:45:23,585 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 6229 transitions. Word has length 127 [2021-12-17 14:45:23,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:45:23,585 INFO L470 AbstractCegarLoop]: Abstraction has 3593 states and 6229 transitions. [2021-12-17 14:45:23,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:45:23,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 6229 transitions. [2021-12-17 14:45:23,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 14:45:23,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:45:23,590 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:45:23,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 14:45:23,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:45:23,808 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:45:23,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:45:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1686876525, now seen corresponding path program 1 times [2021-12-17 14:45:23,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:45:23,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708808588] [2021-12-17 14:45:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:23,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:45:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:45:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:45:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:45:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:45:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:45:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:45:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:45:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:45:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:45:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:45:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 14:45:24,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:45:24,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708808588] [2021-12-17 14:45:24,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708808588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:45:24,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:45:24,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:45:24,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530925264] [2021-12-17 14:45:24,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:45:24,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:45:24,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:45:24,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:45:24,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:45:24,057 INFO L87 Difference]: Start difference. First operand 3593 states and 6229 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:45:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:45:28,594 INFO L93 Difference]: Finished difference Result 8162 states and 14475 transitions. [2021-12-17 14:45:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:45:28,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2021-12-17 14:45:28,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:45:28,624 INFO L225 Difference]: With dead ends: 8162 [2021-12-17 14:45:28,624 INFO L226 Difference]: Without dead ends: 4587 [2021-12-17 14:45:28,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:45:28,640 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 992 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:45:28,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 2295 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-17 14:45:28,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4587 states. [2021-12-17 14:45:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4587 to 3597. [2021-12-17 14:45:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 2598 states have (on average 1.5958429561200924) internal successors, (4146), 2782 states have internal predecessors, (4146), 823 states have call successors, (823), 138 states have call predecessors, (823), 175 states have return successors, (1252), 820 states have call predecessors, (1252), 819 states have call successors, (1252) [2021-12-17 14:45:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 6221 transitions. [2021-12-17 14:45:29,121 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 6221 transitions. Word has length 127 [2021-12-17 14:45:29,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:45:29,121 INFO L470 AbstractCegarLoop]: Abstraction has 3597 states and 6221 transitions. [2021-12-17 14:45:29,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 14:45:29,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 6221 transitions. [2021-12-17 14:45:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 14:45:29,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:45:29,126 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-17 14:45:29,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 14:45:29,126 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:45:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:45:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash -440540130, now seen corresponding path program 1 times [2021-12-17 14:45:29,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:45:29,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175358576] [2021-12-17 14:45:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:29,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:45:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:45:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:45:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:45:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:45:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:45:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:45:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:45:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:45:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:45:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:45:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-17 14:45:29,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:45:29,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175358576] [2021-12-17 14:45:29,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175358576] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:45:29,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732911830] [2021-12-17 14:45:29,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:29,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:45:29,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:45:29,416 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) [2021-12-17 14:45:29,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 14:45:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:29,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 14:45:29,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:45:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 14:45:29,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:45:29,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732911830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:45:29,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:45:29,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2021-12-17 14:45:29,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227838025] [2021-12-17 14:45:29,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:45:29,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:45:29,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:45:29,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:45:29,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:45:29,942 INFO L87 Difference]: Start difference. First operand 3597 states and 6221 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-17 14:45:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:45:31,526 INFO L93 Difference]: Finished difference Result 10632 states and 18903 transitions. [2021-12-17 14:45:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:45:31,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2021-12-17 14:45:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:45:31,557 INFO L225 Difference]: With dead ends: 10632 [2021-12-17 14:45:31,557 INFO L226 Difference]: Without dead ends: 7053 [2021-12-17 14:45:31,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:45:31,576 INFO L933 BasicCegarLoop]: 1049 mSDtfsCounter, 960 mSDsluCounter, 3609 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 4658 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:45:31,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 4658 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 14:45:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7053 states. [2021-12-17 14:45:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7053 to 6972. [2021-12-17 14:45:32,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6972 states, 4862 states have (on average 1.546688605512135) internal successors, (7520), 5280 states have internal predecessors, (7520), 1788 states have call successors, (1788), 250 states have call predecessors, (1788), 321 states have return successors, (2899), 1777 states have call predecessors, (2899), 1782 states have call successors, (2899) [2021-12-17 14:45:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 12207 transitions. [2021-12-17 14:45:32,655 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 12207 transitions. Word has length 127 [2021-12-17 14:45:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:45:32,655 INFO L470 AbstractCegarLoop]: Abstraction has 6972 states and 12207 transitions. [2021-12-17 14:45:32,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-17 14:45:32,656 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 12207 transitions. [2021-12-17 14:45:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 14:45:32,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:45:32,659 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:45:32,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 14:45:32,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-17 14:45:32,877 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:45:32,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:45:32,877 INFO L85 PathProgramCache]: Analyzing trace with hash -494904368, now seen corresponding path program 1 times [2021-12-17 14:45:32,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:45:32,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241056569] [2021-12-17 14:45:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:32,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:45:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:45:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:45:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:45:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:45:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:45:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:45:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:45:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:45:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:45:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:45:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 14:45:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-17 14:45:33,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:45:33,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241056569] [2021-12-17 14:45:33,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241056569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:45:33,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:45:33,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:45:33,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118344718] [2021-12-17 14:45:33,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:45:33,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:45:33,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:45:33,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:45:33,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:45:33,155 INFO L87 Difference]: Start difference. First operand 6972 states and 12207 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-17 14:45:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:45:50,330 INFO L93 Difference]: Finished difference Result 31486 states and 62080 transitions. [2021-12-17 14:45:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 14:45:50,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2021-12-17 14:45:50,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:45:50,471 INFO L225 Difference]: With dead ends: 31486 [2021-12-17 14:45:50,471 INFO L226 Difference]: Without dead ends: 24532 [2021-12-17 14:45:50,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-12-17 14:45:50,526 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 5091 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 8239 mSolverCounterSat, 3039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5215 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 11278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3039 IncrementalHoareTripleChecker+Valid, 8239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:45:50,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5215 Valid, 4358 Invalid, 11278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3039 Valid, 8239 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2021-12-17 14:45:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24532 states. [2021-12-17 14:45:52,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24532 to 12630. [2021-12-17 14:45:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12630 states, 9085 states have (on average 1.541221794166208) internal successors, (14002), 9731 states have internal predecessors, (14002), 2886 states have call successors, (2886), 494 states have call predecessors, (2886), 658 states have return successors, (5331), 2867 states have call predecessors, (5331), 2876 states have call successors, (5331) [2021-12-17 14:45:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12630 states to 12630 states and 22219 transitions. [2021-12-17 14:45:52,887 INFO L78 Accepts]: Start accepts. Automaton has 12630 states and 22219 transitions. Word has length 135 [2021-12-17 14:45:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:45:52,887 INFO L470 AbstractCegarLoop]: Abstraction has 12630 states and 22219 transitions. [2021-12-17 14:45:52,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-17 14:45:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 12630 states and 22219 transitions. [2021-12-17 14:45:52,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-17 14:45:52,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:45:52,891 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:45:52,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 14:45:52,891 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:45:52,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:45:52,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1317359161, now seen corresponding path program 1 times [2021-12-17 14:45:52,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:45:52,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762850160] [2021-12-17 14:45:52,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:45:52,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:45:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:45:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:45:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:45:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:45:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:45:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:45:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:45:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:45:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:45:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:45:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:45:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:45:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:45:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:45:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 14:45:53,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:45:53,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762850160] [2021-12-17 14:45:53,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762850160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:45:53,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:45:53,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:45:53,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731564630] [2021-12-17 14:45:53,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:45:53,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:45:53,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:45:53,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:45:53,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:45:53,154 INFO L87 Difference]: Start difference. First operand 12630 states and 22219 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:45:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:45:59,610 INFO L93 Difference]: Finished difference Result 28348 states and 52685 transitions. [2021-12-17 14:45:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:45:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2021-12-17 14:45:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:45:59,702 INFO L225 Difference]: With dead ends: 28348 [2021-12-17 14:45:59,702 INFO L226 Difference]: Without dead ends: 15736 [2021-12-17 14:45:59,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:45:59,792 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 2064 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:45:59,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2184 Valid, 2215 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2475 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-17 14:45:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15736 states. [2021-12-17 14:46:01,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15736 to 12670. [2021-12-17 14:46:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12670 states, 9121 states have (on average 1.5395241749808135) internal successors, (14042), 9759 states have internal predecessors, (14042), 2886 states have call successors, (2886), 510 states have call predecessors, (2886), 662 states have return successors, (5311), 2863 states have call predecessors, (5311), 2876 states have call successors, (5311) [2021-12-17 14:46:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12670 states to 12670 states and 22239 transitions. [2021-12-17 14:46:02,093 INFO L78 Accepts]: Start accepts. Automaton has 12670 states and 22239 transitions. Word has length 136 [2021-12-17 14:46:02,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:46:02,095 INFO L470 AbstractCegarLoop]: Abstraction has 12670 states and 22239 transitions. [2021-12-17 14:46:02,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-17 14:46:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand 12670 states and 22239 transitions. [2021-12-17 14:46:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-17 14:46:02,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:46:02,100 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-17 14:46:02,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 14:46:02,100 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:46:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:46:02,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1101556879, now seen corresponding path program 1 times [2021-12-17 14:46:02,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:46:02,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677281139] [2021-12-17 14:46:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:46:02,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:46:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:46:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:46:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:46:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:46:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:46:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:46:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:46:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:46:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:46:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:46:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:46:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:46:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:46:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-17 14:46:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:46:02,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:46:02,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677281139] [2021-12-17 14:46:02,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677281139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:46:02,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:46:02,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:46:02,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709870750] [2021-12-17 14:46:02,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:46:02,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:46:02,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:46:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:46:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:46:02,400 INFO L87 Difference]: Start difference. First operand 12670 states and 22239 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:46:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:46:24,408 INFO L93 Difference]: Finished difference Result 53860 states and 111396 transitions. [2021-12-17 14:46:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 14:46:24,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2021-12-17 14:46:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:46:24,734 INFO L225 Difference]: With dead ends: 53860 [2021-12-17 14:46:24,734 INFO L226 Difference]: Without dead ends: 41208 [2021-12-17 14:46:24,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-12-17 14:46:24,839 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 2883 mSDsluCounter, 3462 mSDsCounter, 0 mSdLazyCounter, 8840 mSolverCounterSat, 2049 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3008 SdHoareTripleChecker+Valid, 4773 SdHoareTripleChecker+Invalid, 10889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2049 IncrementalHoareTripleChecker+Valid, 8840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:46:24,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3008 Valid, 4773 Invalid, 10889 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2049 Valid, 8840 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2021-12-17 14:46:24,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41208 states. [2021-12-17 14:46:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41208 to 25292. [2021-12-17 14:46:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25292 states, 18209 states have (on average 1.5361634356636829) internal successors, (27972), 19479 states have internal predecessors, (27972), 5752 states have call successors, (5752), 1014 states have call predecessors, (5752), 1330 states have return successors, (12204), 5721 states have call predecessors, (12204), 5734 states have call successors, (12204) [2021-12-17 14:46:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25292 states to 25292 states and 45928 transitions. [2021-12-17 14:46:29,429 INFO L78 Accepts]: Start accepts. Automaton has 25292 states and 45928 transitions. Word has length 145 [2021-12-17 14:46:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:46:29,430 INFO L470 AbstractCegarLoop]: Abstraction has 25292 states and 45928 transitions. [2021-12-17 14:46:29,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:46:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 25292 states and 45928 transitions. [2021-12-17 14:46:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 14:46:29,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:46:29,434 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-17 14:46:29,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 14:46:29,435 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:46:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:46:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash 468045730, now seen corresponding path program 1 times [2021-12-17 14:46:29,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:46:29,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612739702] [2021-12-17 14:46:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:46:29,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:46:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:46:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:46:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:46:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:46:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:46:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:46:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:46:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:46:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:46:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:46:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:46:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:46:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:46:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:46:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-17 14:46:29,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:46:29,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612739702] [2021-12-17 14:46:29,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612739702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:46:29,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:46:29,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:46:29,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730197101] [2021-12-17 14:46:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:46:29,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:46:29,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:46:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:46:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:46:29,699 INFO L87 Difference]: Start difference. First operand 25292 states and 45928 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:46:39,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:46:39,537 INFO L93 Difference]: Finished difference Result 56637 states and 111885 transitions. [2021-12-17 14:46:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:46:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2021-12-17 14:46:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:46:39,734 INFO L225 Difference]: With dead ends: 56637 [2021-12-17 14:46:39,735 INFO L226 Difference]: Without dead ends: 31363 [2021-12-17 14:46:39,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:46:39,952 INFO L933 BasicCegarLoop]: 937 mSDtfsCounter, 2063 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 3247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:46:39,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2183 Valid, 2238 Invalid, 3247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-17 14:46:39,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31363 states. [2021-12-17 14:46:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31363 to 25357. [2021-12-17 14:46:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25357 states, 18271 states have (on average 1.5345629686388265) internal successors, (28038), 19540 states have internal predecessors, (28038), 5747 states have call successors, (5747), 1030 states have call predecessors, (5747), 1338 states have return successors, (12162), 5709 states have call predecessors, (12162), 5729 states have call successors, (12162) [2021-12-17 14:46:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25357 states to 25357 states and 45947 transitions. [2021-12-17 14:46:44,777 INFO L78 Accepts]: Start accepts. Automaton has 25357 states and 45947 transitions. Word has length 146 [2021-12-17 14:46:44,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:46:44,777 INFO L470 AbstractCegarLoop]: Abstraction has 25357 states and 45947 transitions. [2021-12-17 14:46:44,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:46:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 25357 states and 45947 transitions. [2021-12-17 14:46:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 14:46:44,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:46:44,783 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:46:44,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 14:46:44,783 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:46:44,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:46:44,784 INFO L85 PathProgramCache]: Analyzing trace with hash -914321647, now seen corresponding path program 1 times [2021-12-17 14:46:44,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:46:44,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710451397] [2021-12-17 14:46:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:46:44,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:46:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:46:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:44,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:46:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:44,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:46:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:46:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:46:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:46:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:46:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:46:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:46:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:46:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:46:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:46:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:46:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:46:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-17 14:46:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-17 14:46:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:46:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:46:45,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:46:45,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710451397] [2021-12-17 14:46:45,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710451397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:46:45,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:46:45,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:46:45,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037902941] [2021-12-17 14:46:45,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:46:45,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:46:45,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:46:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:46:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:46:45,073 INFO L87 Difference]: Start difference. First operand 25357 states and 45947 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19)